Gmc 2007 Sierra Manual de usuario

Seats and Restraint Systems... 7Front Seats... 9Rear Seats...

Power SeatsIf the vehicle has power seats, the controls usedto operate them are located on the outboardside of the seats. To adjust the seat, do any o

Airbag Off SwitchIf your instrument panel has one of the switchespictured in the following illustrations, yourvehicle has an airbag off switch that yo

Child age 1 to 12. A child age 1 to 12 mustride in the front seat because:•my vehicle has no rear seat;• although children ages 1 to 12 ride in the re

To turn off the right front passenger’s airbag,insert your ignition key into the switch, push in, andmove the switch to the off position.The airbag of

To turn the right front passenger’s airbag onagain, insert your ignition key into the switch, pushin, and move the switch to the on position.Passenger

The passenger sensing system will turn off theright front passenger’s frontal airbag under certainconditions. The driver’s airbag is not part of thepa

Never put a child in a rear-facing child restraintin the right front passenger seat unless thepassenger airbag status indicator shows off andthe airba

• A right front passenger takes his/her weight offof the seat for a period of time.• The right front passenger seat is occupied bya smaller person, su

If a person of adult-size is sitting in the right frontpassenger’s seat, but the off indicator is lit, it couldbe because that person is not sitting p

Aftermarket equipment, such as seat covers, canaffect how well the passenger sensing systemoperates. You may want to consider not using seatcovers or

{CAUTION:For up to 10 seconds after the ignition keyis turned off and the battery isdisconnected, an airbag can still inflateduring improper service. Y

Power LumbarYour vehicle may have this feature.The control is locatedon the outboard side ofthe seat cushion.To increase or decrease support, hold the

Q: What if I added a snow plow? Will it keepthe airbags from working properly?A: We have designed our airbag systems to workproperly under a wide rang

Restraint System CheckChecking the Restraint SystemsNow and then, make sure the safety belt reminderlight and all your belts, buckles, latch plates,re

Replacing Restraint System PartsAfter a Crash{CAUTION:A crash can damage the restraint systemsin your vehicle. A damaged restraintsystem may not prope

Keys ... 115Remote Keyless Entry System ... 116Remote Keyless Entry SystemOper

Mirrors ... 176Manual Rearview Mirror ... 176Automatic Dimming Rearvie

Keys{CAUTION:Leaving children in a vehicle with theignition key is dangerous for manyreasons. They could operate the powerwindows or other controls or

Your vehicle hasone double-sided keyfor the ignition, alldoor locks, and thespare tire hoist lock ifyour vehicle has one.If you ever lose your keys, y

At times you may notice a decrease in range. Thisis normal for any RKE system. If the transmitterdoes not work or if you have to stand closerto your v

Q(Lock): Press this button once to lock all of thedoors. Pressing lock again within three secondsmay cause the horn to chirp for lock confirmation.You

To replace the battery in the RKE transmitter, dothe following:1. Insert a thin object, such as a coin, in the slotbetween the covers of the transmitt

To heat only the seatback, press the verticalbutton with the heated seatback symbol. Anindicator light on the seatback button will come onto designate

Doors and LocksDoor Locks{CAUTION:Unlocked doors can be dangerous.• Passengers, especially children, caneasily open the doors and fall out of amoving

To unlock the door from the outside, use theRemote Keyless Entry (RKE) transmitter or the key.To unlock or lock thedoor from the inside,slide the manu

If your vehicle has thispower door lock switch,press the bottom ofthe switch on either frontdoor to lock all thedoors at once.Press the top of the swi

Programmable AutomaticDoor LocksYour vehicle may have an automatic lock/unlockfeature which enables you to program yourvehicle’s power door locks. You

3. Press the door lock switch once. You will heareither one or two chimes. The number ofchimes tells you which lock mode is currentlyselected. Continu

Mode 4: No automatic door unlock.The following instructions tell you how tochange the automatic door unlock mode(automatic transmission only). Choose

Rear Door Security Locks(Crew Cab)With this feature, you can lock the rear side doorsso that they cannot be opened from the insideby passengers.This f

To open a rear accessdoor from the outside,first open the front door.Then, use the handlelocated on the frontedge of the rear accessdoor to open it.You

Tailgate RemovalThe tailgate on your vehicle can be removed toallow for different loading situations. Although thetailgate can be removed without assi

Windows{CAUTION:Leaving children, helpless adults, or petsin a vehicle with the windows closed isdangerous. They can be overcome by theextreme heat an

To store the memory settings, do the following:1. If you have an automatic transmission, placethe vehicle in PARK (P).If you have a manual transmissio

Power WindowsIf your vehicle has power windows, the controlsare located on each of the side doors in the frontand rear for crew cab models.The driver’

Swing-Out WindowsYour vehicle may haveswing-out windows. Toopen a rear swing-outwindow, flip thelatch open and swingthe glass out.The latch will catch

This message reminds you to activate thetheft-deterrent system. Here is how to do it:1. Open the door.2. Lock the door with the Remote Keyless Entry(R

Testing the AlarmThe alarm can be tested by following these steps:1. From inside the vehicle, lower the driver’swindow and open the driver’s door.2. A

Starting and Operating YourVehicleNew Vehicle Break-InNotice: Your vehicle does not need anelaborate break-in. But it will perform better inthe long r

Ignition PositionsWith the key in the ignition switch, you can turn itto four different positions.Notice: Using a tool to force the key from theigniti

C (RUN): This is the position for driving.The battery could be drained if you leave the keyin the ACCESSORY or RUN position with theengine off. You ma

Retained Accessory Power (RAP)If the vehicle has Retained Accessory Power(RAP), certain features will continue to operate forup to 10 minutes after th

Starting Procedure1. With your foot off the accelerator pedal, turnthe ignition key to START. When the enginestarts, let go of the key. The idle speed

When starting your engine in very cold weather(below 0°F or −18°C), do this:1. With your foot off the accelerator pedal, turnthe ignition key to START

Easy Exit SeatThe controls for this memory function are locatedon the driver’s door.B(Easy Exit Seat): This button is used toprogram and recall the de

3. Plug it into a normal, grounded 110-volt ACoutlet.{CAUTION:Plugging the cord into an ungroundedoutlet could cause an electrical shock.Also, the wro

See “Range Selection Mode” later in this section.PARK (P): This position locks your rear wheels. Itis the best position to use when you start yourengi

{CAUTION:If you have four-wheel drive, your vehiclewill be free to roll — even if your shiftlever is in PARK (P) — if your transfercase is in NEUTRAL.

DRIVE (D): This position is for normal driving. Itprovides the best fuel economy for your vehicle. Ifyou need more power for passing, and you are:• Go

MANUAL MODE (M): This position, is availableon vehicles with the Allison Transmission®.Itlets drivers select the range of gears appropriatefor current

Range Selection Mode(Allison Transmission®)If your truck has an Allison Transmission®yourvehicle has a Range Selection System.To use this feature, do

Low Traction Mode(Allison Transmission®)If your vehicle has the DURAMAX®diesel engineand the Allison Transmission®,ithasaLowTraction Mode that assists

Tow/Haul ModeIf your vehicle has an automatic transmission, itmay have a Tow/Haul mode. If your vehicle has anAllison Transmission®see “Tow/Haul Mode(

Tow/Haul Mode (AllisonTransmission®)If your vehicle has an Allison Transmission®,itmay have a Tow/Haul mode. Tow/Haul modeadjusts the transmission shi

Cruise Grade Braking is available on the 6.6LDURAMAX®diesel engine. Cruise Grade Brakingmonitors a vehicle’s cruise state, engine torque,acceleration,

Reclining SeatbacksManual Reclining Seatbacks{CAUTION:You can lose control of the vehicle if youtry to adjust a manual driver’s seat whilethe vehicle

FIRST (1): Press the clutch pedal and shift intoFIRST (1). Then, slowly let up on the clutch pedalas you press the accelerator pedal. Shift intoFIRST

Also, use REVERSE (R), along with the parkingbrake, when turning off your engine and parkingyour vehicle.Five-Speed (VORTEC™ 4.3L V6 and4.8L V8 Engine

Shift Speeds{CAUTION:If you skip a gear when you downshift,you could lose control of your vehicle.You could injure yourself or others. Donot shift dow

When this light comes on, you can shift to the nexthigher gear if weather, road and traffic conditionsallow. For the best fuel economy, accelerate slo

A 4WD indicator lightcomes on when youshift into four-wheeldrive and the front axleengages. SeeFour-Wheel-Drive Lighton page 263.Some delay between sh

{CAUTION:Shifting the transfer case to NEUTRALcan cause your vehicle to roll even if thetransmission is in PARK (P), or if youhave a manual transmissi

When Using the Manual Transfer Case•Shifting should be made using quick motions.Shifting slowly may make it more difficult toshift.• You may notice th

Shifting In or Out of 4L (Four-WheelDrive Low)Notice: Shifting the transfer case into 4Lwhile moving at speeds faster than 3 mph(5 km/h) may cause pre

Recommended Transfer Case SettingsDrivingConditionsTransfer Case Settings2mAUTO4WD4m 4 nNNormal YESVariable YESSevere YESExtreme YESVehicle inTow*YES*

2 m (Two-Wheel Drive High): This setting isused for driving in most street and highwaysituations. Your front axle is not engaged intwo-wheel drive. Th

To return the seatback to an upright position, dothe following:1. Lift the lever fully without applying pressure tothe seatback and the seatback will

Shifting into Four-Wheel Drive High orAUTO 4WD (Automatic Four-Wheel Drive)Press and release the Four-Wheel Drive Highor AUTO 4WD switch. This can be

If the Four-Wheel Drive Low switch is pressedwhen your vehicle is in gear and/or moving,the Four-Wheel Drive Low indicator light will flashfor 30 secon

Shifting Into NEUTRAL{CAUTION:Shifting the transfer case to NEUTRALcan cause your vehicle to roll even if thetransmission is in PARK (P). You orsomeon

Shifting Out of NEUTRALTo shift out of NEUTRAL:1. Set the parking brake and apply the regularbrake pedal.2. Turn the ignition to RUN with the engine o

Electronic Transfer CaseIf your four-wheel-drivevehicle has theelectronic transfer case,the transfer caseswitches are located tothe left of theinstrum

{CAUTION:Shifting the transfer case to NEUTRALcan cause your vehicle to roll even if thetransmission is in PARK (P). You orsomeone else could be serio

Shifting from Two-Wheel Drive High orFour-Wheel Drive High to Four-WheelDrive LowTo shift from Two-Wheel Drive High or Four-WheelDrive High to Four-Wh

Shifting from Four-Wheel Drive Low toFour-Wheel Drive High or Two-WheelDrive HighTo shift from Four-Wheel Drive Low to Four-WheelDrive High or Two-Whe

5. Simultaneously press and hold the Two-WheelDrive High and Four-Wheel Drive Low buttonsfor 10 seconds. The red NEUTRAL light willcome on when the tr

6. You may start the engine and shift thetransmission to the desired position.Excessively shifting the transfer case into orout of the different modes

{CAUTION:Sitting in a reclined position when yourvehicle is in motion can be dangerous.Even if you buckle up, your safety beltscannot do their job whe

Shifting Into Park (P)(Automatic Transmission){CAUTION:It can be dangerous to get out of yourvehicle if the shift lever is not fully inPARK (P) with t

Leaving Your Vehicle With the EngineRunning (Automatic Transmission){CAUTION:It can be dangerous to leave your vehiclewith the engine running. Your ve

If torque lock does occur, you may need to haveanother vehicle push yours a little uphill totake some of the pressure from the parking pawlin the tran

Parking Over Things That Burn{CAUTION:Things that can burn could touch hotexhaust parts under your vehicle andignite. Do not park over papers, leaves,

Engine Exhaust{CAUTION:Engine exhaust can kill. It contains thegas carbon monoxide (CO), which youcannot see or smell. It can causeunconsciousness and

Running the Engine While ParkedIt is better not to park with the engine running. But ifyou ever have to, here are some things to know.{CAUTION:Idling

{CAUTION:Four-wheel drive vehicles with the transfercase in NEUTRAL will allow the vehicle toroll, even if your automatic transmissionshift lever is i

To adjust between Fahrenheit and Celsius do thefollowing:1. Press and hold the on/off button forapproximately four seconds until either aflashing F or

Compass VarianceThe mirror is set in zone eight upon leaving thefactory. It will be necessary to adjust the compassto compensate for compass variance

Compass CalibrationThe compass may need calibration if one of thefollowing occurs:• After approximately five seconds, the displaydoes not show a compas

Head RestraintsAdjust the head restraint so that the top of therestraint is at the same height as the occupant’shead. This position reduces the chance

Automatic Dimming Rearview Mirrorwith Compass and TemperatureDisplayIf the vehicle is equipped with an automatic mirror, itwill, when on, automaticall

Automatic Dimming Mirror OperationThe time period you need to press and holdthe TEMP button to turn the automatic dimmingfeature on or off is approxim

Compass VarianceThe mirror is set in zone eight upon leaving thefactory. It will be necessary to adjust the compassto compensate for compass variance

Passenger Airbag IndicatorThe mirror may be equipped with a passengerairbag indicator on the mirror glass, just above thebuttons. If the vehicle has t

If your vehicle isequipped with this styletrailering-type mirror,they can be adjusted soyou can have a clearview of the objectsbehind you.Adjust each

Outside West Coast-Type MirrorsIf your vehicle is equipped with these mirrors, theycan be adjusted so you can have a clear viewof objects behind you.A

Outside Power Foldaway MirrorsIf your vehicle isequipped with thisfeature, the controls arelocated on the driver’sdoor armrest.Move the upper selector

Resetting the Power Foldaway MirrorsYou will need to reset the power foldaway mirrorsif the following occurs:• They are accidentally manually folded/u

Outside Convex Mirror{CAUTION:A convex mirror can make things (likeother vehicles) look farther away thanthey really are. If you cut too sharply intot

OnStar®SystemOnStar®uses several innovative technologies andlive advisors to provide you with a wide rangeof safety, security, information, and conven

Rear SeatsRear Seat Operation (Extended Cab)Folding the Rear SeatThe rear seat in the extended cab can be foldedup to provide more cargo space.To fold

Safe & Sound Plan•Automatic Notification of Airbag Deployment• Emergency Services• Roadside Assistance• Stolen Vehicle Location Assistance• Acciden

OnStar®Steering Wheel ControlsYour vehicle may beequipped with aTalk/Mute button thatcan be used to interactwith OnStar®.See Audio Steering Wheel Cont

This device complies with RSS-210 of IndustryCanada. Operation is subject to the followingtwo conditions:1. This device may not cause interference.2.

Universal Home Remote SystemOperation (With Three Round LED)Your vehicle may have the Universal Home RemoteSystem. If there are three round Light Emit

If you do not know if your garage door opener is afixed code or rolling code device, open yourgarage door opener’s remote control battery cover.Your ga

2. Write down the eight to 12 coding switchsettings from left to right. When the switchis in the up position, write “on,” and when aswitch is in the d

6. Press and hold the button you would like touse to control the garage door until thegarage door moves. The indicator light abovethe selected button

2. Go to the garage. Locate the garage doormotor head and press and release the“learn” button.After pressing the “learn” button, you have10 to 30 seco

Reprogramming Universal HomeRemote ButtonsYou can reprogram any of the three buttons byrepeating the instructions.Erasing Universal Home RemoteButtons

If you have a newer garage door opener with rollingcodes, please be sure to follow Steps 6 through 8 tocomplete the programming of your Universal Home

Service and Appearance Care... 465Service... 468Fuel...

Rear Seat Operation (Crew Cab)The second row seat is a 60/40 split seat. Eitherside of the rear seat may be flipped and folded foradded cargo space.Mak

4. The indicator light will flash slowly at first andthen rapidly after Universal Home Remotesuccessfully receives the frequency signalfrom the hand-hel

Gate Operator and CanadianProgrammingCanadian radio-frequency laws require transmittersignals to time out or quit after several secondsof transmission

Reprogramming a Single UniversalHome Remote ButtonTo program a device to Universal Home Remoteusing a Universal Home Remote buttonpreviously trained,

Tonneau CoverIf your vehicle has a tonneau cover, follow thedirections below to remove the cover.1. To remove, unsnapthe cover. Roll it upand stow it

3. Remove the three bows by gently pushingthem against the spring-loaded end. Thethree bows are labeled front, center and rearto remind you of the ord

SunroofThe vehicle may have a power sliding sunroof.To open or close the sunroof, the ignition must beon or Retained Accessory Power (RAP) mustbe acti

✍ NOTES206

Instrument Panel Overview ... 210Hazard Warning Flashers ... 212Other Warning Devices ...

Anti-Lock Brake System Warning Light ... 255Traction Off Light ... 256Engine Coolant Temperature Gage ...

✍ NOTES209

To return the seat to the normal seating position,do the following:1. Lift the seatback up and push it rearward allthe way.{CAUTION:If the seatback is

Instrument Panel OverviewAutomatic Transmission Version shown, Manual Transmission Version similar210

The main components of your instrument panel are the following:A. Dome Lamp Override Button. See Dome LampOverride on page 227.B. Headlamp Controls. S

S. Cigarette Lighter. See Ashtray(s) and CigaretteLighter on page 229.T. Accessory Power Outlet. See Accessory PowerOutlet(s) on page 228.U. Manual Se

Other Warning DevicesIf you carry reflective triangles, you can set themup at the side of the road about 300 feet (100 m)behind your vehicle.HornTo sou

Turn Signal/Multifunction LeverThe lever on the left side of the steering columnincludes the following:• G Turn and Lane Change Signals. SeeTurn and L

An arrow on theinstrument panel clusterwill flash in thedirection of the turn orlane change.As you signal a turn or a lane change, if thearrows flash mo

Flash-to-PassThis feature lets you use your high-beamheadlamps to signal a driver in front of you thatyou want to pass. It works even if your headlamp

Windshield WasherLQ(Washer Fluid): There is a paddle markedwith the windshield washer symbol at the topof the multifunction lever. To spray washer flui

R(On): Move the switch to this position to turn onthe cruise control system.+ (Resume/Accelerate): Move the switch to thisposition to make the vehicle

Setting Cruise Control{CAUTION:If you leave your cruise control on whenyou are not using cruise, you might hit abutton and go into cruise when you don

Safety BeltsSafety Belts: They Are for EveryoneThis part of the manual tells you how to usesafety belts properly. It also tells you some thingsyou sho

Increasing Speed While UsingCruise ControlThere are two ways to go to a higher speed:• Use the accelerator pedal to get to the higherspeed. Press the

Ending Cruise ControlThere are four ways to turn off the cruise control:• Step lightly on the brake pedal,• Move the cruise control switch to off, or•

The headlamp control has four positions:9(Off): Turn the control to this position to turnoff the Daytime Running Lamps (DRL) andthe automatic headlamp

The DRL system will come on when the followingconditions are met:• The ignition is on• The exterior lamps control is in AUTO• The light sensor determi

The system may also turn on the headlamps whendriving through a parking garage, heavy overcastweather, or a tunnel. This is normal.There is a delay in

Fog LampsIf your vehicle has fog lamps, use them for bettervision in foggy or misty conditions.The fog lamp button islocated on the left sideof the in

Auxiliary Roof Mounted LampIf your vehicle has this feature, this button includeswiring provisions for a dealer or a qualifiedservice center to install

Dome Lamp OverrideE(Dome Lamp Override): You can use thedome override button, located below the exteriorlamps control, to set the dome lamps to comeon

Cargo LampThe cargo lamp buttonis located on the leftside of the instrumentpanel. Press thebutton to turn the cargolamp on or off.An indicator light o

Certain power accessory plugs may not becompatible to the accessory power outlet andcould result in blown vehicle or adapter fuses.If you experience a

Your vehicle has a lightthat comes on as areminder to buckle up.See Safety BeltReminder Light onpage 247.In most states and in all Canadian provinces,

Climate ControlsClimate Control SystemFan KnobThe fan knob on the left side of the control paneladjusts the fan speed. Turn the knob clockwiseor count

W(Defog): Airflow is delivered through the flooroutlets, the windshield defroster outlets, andthe side window defroster outlets. The air flow canbe divid

Mode ControlTo change the current mode, select one of thefollowing:H(Vent): This mode directs air to the instrumentpanel outlets.)(Bi-Level): This mod

Temperature ControlDriver’s Side: The lever on the left side of theclimate control panel is used to raise or lower thetemperature on the driver’s side

1(Defrost): This mode directs most of the air tothe windshield and the side window outlets, withonly a little air directed to the floor outlets. The ai

Dual Automatic Climate ControlSystemWith this system, you can control the heating,cooling, and ventilation in your vehicle. Yourvehicle also has a flow

Passenger’s Side Temperature KnobThe passenger’s side knob can be used to changethe temperature of the air coming through thesystem on the passenger’s

When AUTO is selected, the air conditioningoperation and air inlet will be automaticallycontrolled. The air conditioning compressor willrun when the o

Manual OperationYou may manually adjust the air delivery mode orfan speed.w9x(Fan): The switch with the fan symbolallows you to manually adjust the fa

If you select recirculation while in defrost, defog,or floor, the light in the button will flash and then goout to let you know that this is not allowed

Put someone on it. Get it up to speed. Then stop the vehicle. Therider does not stop.24

Air Conditioning#(Air Conditioning): Press this button to turnthe air conditioning (A/C) compressor on andoff. The snowflake symbol will appear onthe d

SensorsThe solar sensor, located in the defrost grille, thatis in the middle of the instrument panel, monitorsthe solar radiation. Do not cover the so

In order to prevent false temperature readings atstartup, the displayed temperature will notchange until the following occurs:• Vehicle speed is above

Rear Window DefoggerIf your vehicle has this feature, the rear windowdefogger uses a warming grid to remove fog fromthe rear window.If your vehicle ha

Warning Lights, Gages, andIndicatorsThis part describes the warning lights and gageson your vehicle. The pictures will help youlocate them.Warning lig

Instrument Panel ClusterYour instrument cluster is designed to let you know at a glance how your vehicle is running. You willknow how fast you are goi

Speedometer and OdometerYour speedometer lets you see your speed in bothmiles per hour (mph) and kilometers per hour(km/h). Your odometer shows how fa

Safety Belt Reminder LightWhen the key is turned to RUN or START, achime will sound for several seconds to remindpeople to buckle their safety belts.

Airbag Off LightIf your vehicle has an airbag off switch, it also hasan airbag off light. See Airbag Off Switch onpage 100 for more on this, including

{CAUTION:If the airbag readiness light ever comeson when you have turned off the airbag, itmeans that something may be wrong withthe airbag system. Th

The person keeps going until stopped bysomething. In a real vehicle, it could be thewindshield...or the instrument panel...25

Passenger Airbag Status IndicatorIf your vehicle has the passenger sensing system,your rearview mirror will have a passengerairbag status indicator.Wh

Never put a child in a rear-facing child restraint inthe right front passenger seat the unlesspassenger airbag status indicator shows off. Neverput a

If the word OFF or the off symbol is lit on thepassenger airbag status indicator, it means thatthe passenger sensing system has turned offthe right fr

Battery Warning LightIf this light comes onwhen the engine isrunning, there could bea problem with thecharging system.The battery display will also st

This condition is normal since the charging systemis not able to provide full power at engine idle.As engine speeds are increased, this conditionshoul

This light should come on briefly when you turnthe ignition key to RUN. If it does not comeon then, have it fixed so it will be ready to warnyou if ther

The ABS warning light should come on brieflywhen you turn the ignition key to RUN. If the lightdoes not come on then, have it fixed so it willbe ready t

Transmission Temperature GageYour vehicle may have a transmissiontemperature gage.When your ignition is on, the gage shows thetemperature of the trans

If the transmission continues to operate above265°F (130°C), contact your nearest dealer or theGM Roadside Assistance Center. See RoadsideAssistance P

This system is called OBD II (On-BoardDiagnostics-Second Generation) and is intendedto assure that emissions are at acceptablelevels for the life of t

or the safety belts!With safety belts, you slow down as the vehicledoes. You get more time to stop. You stopover more distance, and your strongest bon

If the Light is FlashingThe following may prevent more serious damageto your vehicle:• Reducing vehicle speed• Avoiding hard accelerations• Avoiding s

Have you recently changed brands of fuel?If so, be sure to fuel your vehicle with quality fuel.See Gasoline Octane on page 470. Poor fuelquality will

Oil Pressure GageThe oil pressure gage shows the engine oilpressure in psi (pounds per square inch) when theengine is running. Canadian vehicles indic

Security LightThis light flashes whenthe vehicle securitysystem is activated.Cruise Control LightThis light comes onwhenever you set yourcruise control

Tow/Haul Mode LightThis light comes onwhen the Tow/Haulmode has beenactivated.For more information, see Tow/Haul Mode onpage 147.Cargo Lamp LightThis

Here are some situations you may experience withyour fuel gage. None of these indicate a problemwith the fuel gage.• At the gas station, the fuel pump

If your vehicle has an Allison Transmission®andthe shift lever is in the MANUAL MODE (M)position, the DIC will display the current gearrange. The DIC

Trip Information Button3(Trip Information): Press the tripinformation button to scroll through theODOMETER, TRIP A, TRIP B, TIMER, ENGINEHOURS, and SE

Engine Hours: Press the trip information buttonuntil ENGINE HOURS appears on the display.This mode shows the total number of hoursthe engine has run.

Press and hold the select button for one secondwhile AVG ECON is displayed to reset the averagefuel economy. Average fuel economy will thenbe calculat

Q: If I am a good driver, and I never drive farfrom home, why should I wear safety belts?A: You may be an excellent driver, but if you arein an accide

DIC Warnings and MessagesWarning messages are displayed on the DriverInformation Center (DIC) to notify the driverthat the status of the vehicle has c

BUCKLE PASSENGERIf your vehicle has the passenger sensing system,this message reminds you to buckle thepassenger’s safety belt. See Passenger SensingS

CHANGE ENGINE OILThis message is displayed when the engine oilneeds to be changed.When you change the engine oil, be sure to resetthe CHANGE ENGINE OI

DRIVER DOOR AJARIf the driver’s door is not fully closed, this messagewill appear on the display and you will hear achime. Stop and turn off the vehic

FUEL LEVEL LOWIf the fuel level is low, this message will appear onthe DIC and you will hear a chime. Refuel assoon as possible. Pressing any of the f

If your vehicle has a low coolant level sensor, thismessage will appear on the DIC if the enginecoolant level is low. Adding coolant to the coolantrec

PASSENGER DOOR AJARIf the passenger’s door is not fully closed, thismessage will appear on the display and you willhear a chime. Stop and turn off the

RIGHT REAR DOOR AJAR (Crew Cab)If the passenger’s side rear door is not fullyclosed, this message will appear on the displayand you will hear a chime.

SERVICE BRAKE BOOSTER{CAUTION:Your brake system may not be workingproperly if the SERVICE BRAKEBOOSTER message is displayed.If the brake system warnin

SERVICE CHARGING SYSTEMOn some vehicles, if there is a problem with thebattery charging system, this message will appearon the DIC. Under certain cond

3. Pick up the latch plate and pull the belt acrossyou. Do not let it get twisted.The lap-shoulder belt may lock if you pull thebelt across you very q

TRANSMISSION HOTNotice: If you drive your vehicle while thetransmission fluid is overheating and thetransmission temperature warning is displayedon the

TRANS (Transmission) HOT IDLEENGINENotice: If you drive your vehicle while thetransmission fluid is overheating and thetransmission temperature warning

DIC Vehicle CustomizationYour vehicle may have customization capabilitiesthat allow you to program some features to onesetting based on your preferenc

Unlock Doors (AutomaticTransmission only)If you have an automatic transmission vehicle,press the customization button until UNLOCKDOORS appears in the

Press the customization button until DOOR LOCKDELAY appears in the display. To select yourpreference for delayed locking, press the selectbutton while

Choose one of the available options and press thecustomization button while it is displayed on theDIC to select it and move on to the next feature.Unl

The amount of time you choose will be theamount of time that the headlamps stay on afteryou turn off the vehicle. If you choose off, theheadlamps will

Curb ViewPress the customization button until CURB VIEWappears in the display. To select your preferencefor curb view, press the select button while C

LanguageTo select your preference for display language,press the select button while LANGUAGE isdisplayed on the DIC. Pressing the select buttonwill s

Audio System(s)Determine which radio your vehicle has and thenread the pages following to familiarize yourselfwith its features.Driving without distra

The lap part of the belt should be worn low andsnug on the hips, just touching the thighs. Ina crash, this applies force to the strong pelvicbones. An

While your vehicle is parked:• Familiarize yourself with all of its controls.• Familiarize yourself with its operation.• Set up your audio system by p

Setting the Time for Radios withRadio Data Systems (RDS)The radio may have a button marked with an H orHR to represent hours and an M or MN torepresen

Finding a StationAM FM: Press this button to switch between FM1,FM2, or AM. The display shows the selection.TUNE: Turn this knob to select radio stati

Setting the Tone (Bass/Treble)AUDIO: To adjust bass or treble, press andrelease AUDIO until BAS (bass) or TRE (treble)appears on the display. Then pre

Radio MessagesCAL (Calibrated): The audio system has beencalibrated for your vehicle from the factory. If CALappears on the display it means that the

Radio Data System (RDS)The audio system has a Radio Data System(RDS). RDS features are available for use only onFM stations that broadcast RDS informa

Playing the RadioPWR (Power): Press this knob to turn the systemon and off.o VOL p(Volume): Turn this knob to increaseor to decrease the volume.INFO (

©SCAN ¨: Press and hold either the SCAN orthe TYPE arrows for two seconds until SCANappears on the display and you hear a beep. Theradio will go to a

Setting the Tone (Bass/Treble)AUDIO: Push and release the AUDIO knob untilBASS or TREB (treble) appears on the display.Turn the knob to increase or to

To adjust all tone and speaker controls to themiddle position, push and hold the AUDIO knobwhen no tone or speaker control is displayed. ALLCENTERED w

GENERAL MOTORS, GM, the GM Emblem,GMC, the GMC Truck Emblem, and the nameSIERRA are registered trademarks of GeneralMotors Corporation.This manual inc

Q: What is wrong with this?A: The shoulder belt is too loose. It will not givenearly as much protection this way.{CAUTION:You can be seriously hurt if

BAND (Alternate Frequency): Alternatefrequency allows the radio to switch to a strongerstation with the same program type. To turnalternate frequency

Radio MessagesCAL ERR (Calibration Error): The audio systemhas been calibrated for your vehicle from thefactory. If CAL ERR appears on the display, it

Do not add any label to a CD, it could get caughtin the CD player. If a CD is recorded on apersonal computer and a description label isneeded, try lab

6 RDM (Random): Press this pushbutton to hearthe tracks in random, rather than sequential,order. RDM ON will appear on the display. RDM Tand the track

CD MessagesIf the CD comes out, it could be for one of thefollowing reasons:• It is very hot. When the temperature returns tonormal, the CD should pla

Radio Data System (RDS)The audio system has a Radio Data System(RDS). RDS features are available for use only onFM stations that broadcast RDS informa

Playing the RadioPWR (Power): Press this knob to turn the systemon and off.o VOL p(Volume): Turn this knob to increaseor to decrease the volume.INFO (

©SCAN ¨: Press and hold either the SCAN orthe TYPE arrows for two seconds until SCANappears on the display and you hear a beep. Theradio will go to a

Setting the Tone (Bass/Treble)AUDIO: Push and release the AUDIO knob untilBASS or TREB (treble) appears on the display.Turn the knob to increase or to

To adjust the balance or fade to the middleposition while it is displayed, push the AUDIOknob, then push it again and hold it until the radioproduces

Q: What is wrong with this?A: The lap belt is too loose. It will not give nearlyas much protection this way.{CAUTION:You can be seriously hurt if your

BAND (Alternate Frequency): Alternatefrequency allows the radio to switch to a strongerstation with the same program type. To turnalternate frequency

Radio MessagesCAL ERR (Calibration Error): The audio systemhas been calibrated for your vehicle from thefactory. If CAL ERR appears on the display, it

1 PREV (Previous): The tape must have at leastthree seconds of silence between each selectionfor previous to work. Press this pushbutton to goto the p

©SCAN ¨: Press and hold either the SCAN orthe TYPE arrows for more than two secondsuntil SCAN appears on the display and you hear abeep. The radio wil

CLEAN: If this message appears on the display,the cassette tape player needs to be cleaned. It willstill play tapes, but it should be cleaned as soon

The CD player can play the smaller 3 inch (8 cm)single CDs with an adapter ring. Full-size CDsand the smaller CDs are loaded in the samemanner.If play

3 REV (Reverse): Press and hold this pushbuttonto quickly reverse within a track. Press and holdthis pushbutton for less than two seconds toreverse at

BAND: Press this button to listen to the radiowhen a cassette tape or CD is playing. Theinactive tape or CD will remain safely inside theradio for fut

Listening to a DVDIf your vehicle has the Rear Seat Entertainment(RSE) system and a DVD is playing, the DVDsymbol will appear on the radio display ind

Radio Data System (RDS)The audio system has a Radio Data System(RDS). RDS features are available for use only onFM stations that broadcast RDS informa

Q: What is wrong with this?A: The belt is buckled in the wrong place.{CAUTION:You can be seriously injured if your belt isbuckled in the wrong place l

For RDS, press the INFO knob to change whatappears on the display while using RDS. Thedisplay options are station name, RDS stationfrequency, PTY, and

To scan preset stations, press and hold eitherthe SCAN or the TYPE arrows for more thanfour seconds. PSC will appear on the display andyou will hear a

AUTO EQ (Automatic Equalization): Press thisbutton to select customized equalization settingsdesigned for country/western, jazz, talk, pop, rock,and c

SCAN: Scan the stations within a PTY byperforming the following:1. Press the TYPE button to activate programtype select mode. P-TYPE and the lastselec

RDS MessagesINFO (Information): If the current station has amessage, INFO will appear on the display.Press this button to see the message. Themessage

If playing a CD-R, the sound quality may bereduced due to CD-R quality, the method ofrecording, the quality of the music that has beenrecorded, and th

To insert multiple CDs, do the following:1. Turn the ignition on.2. Press and hold the LOAD button fortwo seconds.You will hear a beep and the indicat

Once the CD is removed, the indicator lightwill begin flashing again and another CDwill eject.To stop ejecting the CDs, press the LOAD orthe eject butt

RDM (Random): With random, you can listen tothe tracks in random, rather than sequential,order, on one CD or on all of the CDs. To userandom, do one o

INFO (Information): Press this knob to see howlong the current track has been playing. Tochange the default on the display, track or elapsedtime, pres

Q: What is wrong with this?A: The belt is over an armrest.{CAUTION:You can be seriously injured if your beltgoes over an armrest like this. The beltwo

Seek through the song list by using the SEEK orTYPE arrows. Seeking past the last savedtrack will return to the first saved track.To delete tracks from

CD MessagesCHECK CD: If this message appears on thedisplay and/or the CD comes out, it could be forone of the following reasons:• It is very hot. When

XM Radio MessagesRadio Display Message Condition Action RequiredXL (Explicit LanguageChannels)XL on the radio display,after the channel name,indicates

Radio Display Message Condition Action RequiredNo Info Song/Program Titlenot availableNo song title information is available at this time on thischann

Rear Seat Entertainment SystemYour vehicle may have a DVD Rear SeatEntertainment (RSE) system. The RSE systemincludes a DVD player, a video display sc

When using the wired headphones, if the frontseat passengers play a CD in the Radio withSix-Disc CD (if equipped) or use XM™ SatelliteRadio Service (i

Stereo RCA JacksThe RCA jacks are located behind the videoscreen. The RCA jacks allow audio and videosignals to be connected from an auxiliary devices

The RSE system will always transmit the audiosignal by infrared to the wireless headphones,if there is audio available. See “Headphones”previously for

DVD PlayerThe DVD player is located in the overheadconsole. The DVD player can be controlled by thebuttons on the DVD player and/or by the buttonson t

SRCE (Source): Press this button to switchbetween the DVD player and an auxiliary source.c(Stop): Press this button to stop playing,rewinding, or fast

Q: What is wrong with this?A: The shoulder belt is worn under the arm. Itshould be worn over the shoulder at alltimes.{CAUTION:You can be seriously in

Some DVDs will not allow fast forwarding orskipping of the copyright information or thepreviews. Some DVDs will begin playing after thepreviews have fi

Remote Control ButtonsO(Power): Press this button to turn the DVDplayer on and off.v(Title): Press this button to return the DVD tothe main menu of th

t(Previous Track/Chapter): Press this buttonto return to the start of the current track or chapter.Press this button again to return to the previoustr

[(Fast Forward): Press this button to fastforward the DVD or CD. To stop fast forwarding,press this button again. This button may notwork when the DVD

Problem Recommended ActionNo power. The ignition might not bein on or accessory.The parental controlbutton might have beenturned on. The powerindicato

Problem Recommended ActionAfter stopping the player,I push Play butsometimes the DVDstarts where I left off andsometimes at thebeginning.If the stop b

DVD MessagesThe following errors may be displayed on thevideo screen:Disc Format Error: This message will bedisplayed if a disc is inserted upside dow

Rear Seat Audio (RSA)This feature allows rear seat passengers to listento any of the sources: radio, cassette tapes,CDs, or DVDs. However, the rear se

xSEEK w: When listening to FM1, FM2, or AM,press the up or the down arrow to go to thenext or to the previous station and stay there. Thisfunction is

Audio Steering Wheel ControlsIf your vehicle has this feature, some audiocontrols can be adjusted at the steering wheel.They include the following:g(O

Q: What is wrong with this?A: The belt is twisted across the body.{CAUTION:You can be seriously injured by a twistedbelt. In a crash, you would not ha

Radio ReceptionYou may experience frequency interference andstatic during normal radio reception if itemssuch as cellphone chargers, vehicle convenien

The tape player should be cleaned regularly afterevery 50 hours of use. The radio may displayCLEAN to indicate that the tape player has beenused for 5

A non-scrubbing action, wet-type cleaner whichuses a cassette with a fabric belt to clean the tapehead can be used. This type of cleaning cassettewill

Fixed Mast AntennaThe fixed mast antenna can withstand most carwashes without being damaged. If the mast shouldever become slightly bent, straighten it

✍ NOTES354

Your Driving, the Road, andYour Vehicle ... 356Defensive Driving ... 356Dr

Your Driving, the Road, andYour VehicleDefensive DrivingThe best advice anyone can give about driving is:Drive defensively.Please start with a very im

Drunken DrivingDeath and injury associated with drinking anddriving is a national tragedy. It is the numberone contributor to the highway death toll,c

According to the American Medical Association,a 180 lb (82 kg) person who drinks three 12 ounce(355 ml) bottles of beer in an hour will end up with aB

But the ability to drive is affected well below a BACof 0.10 percent. Research shows that the drivingskills of many people are impaired at a BACapproa

To unlatch the belt, push the button on the buckle.The belt should go back out of the way.Before you close the door, be sure the belt is outof the way

Control of a VehicleYou have three systems that make yourvehicle go where you want it to go. They arethe brakes, the steering, and the accelerator.All

Avoid needless heavy braking. Some people drivein spurts — heavy acceleration followed byheavy braking — rather than keeping pace withtraffic. This is

Let us say the road is wet and you are drivingsafely. Suddenly, an animal jumps out in front ofyou. You slam on the brakes and continue braking.Here i

Remember: ABS does not change the time youneed to get your foot up to the brake pedal oralways decrease stopping distance. If you get tooclose to the

If your vehicle is in cruise control when the TASbegins to limit wheel spin, the cruise control willautomatically disengage. When road conditionsallow

See Rocking Your Vehicle to Get It Out onpage 407 and If Your Vehicle is Stuck in Sand,Mud, Ice, or Snow on page 406.To turn the system onor off, pres

It is recommended to use this system as follows:• For superior ride comfort in an unloaded vehiclethe button should be out. The indicator light willno

SteeringPower SteeringIf you lose power steering assist because theengine stops or the system is not functioning,you can steer but it will take much m

Steering in EmergenciesThere are times when steering can be moreeffective than braking. For example, you comeover a hill and find a truck stopped in yo

Off-Road RecoveryYou may find that your right wheels have droppedoff the edge of a road onto the shoulder whileyou are driving.If the level of the shou

Right Front Passenger PositionTo learn how to wear the right front passenger’ssafety belt properly, see Driver Position onpage 27.The right front pass

• Watch for traffic signs, pavement markings, andlines. If you can see a sign up ahead that mightindicate a turn or an intersection, delay yourpass. A

• Try not to pass more than one vehicle at a timeon two-lane roads. Reconsider before passingthe next vehicle.• Do not overtake a slowly moving vehicl

If your vehicle starts to slide, ease your foot offthe accelerator pedal and quickly steer theway you want the vehicle to go. If you startsteering qui

If you think you will need some more groundclearance at the front of your vehicle, youcan remove the front bumper lower air dam.The front bumper lower

2. While continuing topull downward onthe push-pin,squeeze and turnthe expandable endof the push-pinwith a tool until itreleases fromthe retainer.3. P

To reinstall the lower air dam, do the following:1. Line up eachpush-pin with itsintended retainerand push the washerportion of thepush-pin toward the

Loading Your Vehicle for Off-RoadDriving{CAUTION:• Cargo on the load floor piled higherthan the seatbacks can be thrownforward during a sudden stop. Yo

Environmental ConcernsOff-road driving can provide wholesome andsatisfying recreation. However, it also raisesenvironmental concerns. We recognize the

Getting Familiar with Off-Road DrivingIt is a good idea to practice in an area that issafe and close to home before you go intothe wilderness. Off-roa

Scanning the TerrainOff-road driving can take you over many differentkinds of terrain. You need to be familiar withthe terrain and its many different

To make the belt shorter, pull its free end asshown until the belt is snug.Buckle, position and release it the same way asthe lap part of a lap-should

When you drive over bumps, rocks, or otherobstacles, your wheels can leave the ground.If this happens, even with one or two wheels,you cannot control

Approaching a HillWhen you approach a hill, you need to decideif it is one of those hills that is just too steep toclimb, descend, or cross. Steepness

Driving UphillOnce you decide you can safely drive up the hill,you need to take some special steps.• Use a low gear and get a firm grip on thesteering

Q: What should I do if my vehicle stalls,or is about to stall, and I cannot make itup the hill?A: If this happens, there are some things youshould do,

Q: Suppose, after stalling, I try to back downthe hill and decide I just cannot do it.What should I do?A: Set the parking brake, put the transmission

Driving DownhillWhen off-roading takes you downhill, you will wantto consider a number of things:• How steep is the downhill? Will I be able tomaintai

Q: Are there some things I should not dowhen driving down a hill?A: Yes! These are important because if youignore them you could lose control andhave

Driving Across an InclineSooner or later, an off-road trail will probably goacross the incline of a hill. If this happens,you have to decide whether t

Q: What if I am driving across an incline thatis not too steep, but I hit some loosegravel and start to slide downhill. Whatshould I do?A: If you feel

Driving in Mud, Sand, Snow, or IceWhen you drive in mud, snow, or sand, your wheelswill not get good traction. You cannot accelerate asquickly, turnin

Lap-Shoulder BeltAll rear seat positions have lap-shoulder belts.Here is how to wear one properly.1. Pick up the latch plate and pull the belt acrossy

Driving in WaterHeavy rain can mean flash flooding, and floodwaters demand extreme caution.Find out how deep the water is before you drivethrough it. If

After Off-Road DrivingRemove any brush or debris that has collectedon the underbody, chassis, or under the hood.These accumulations can be a fire hazar

You can be temporarily blinded by approachingheadlamps. It can take a second or two, oreven several seconds, for your eyes to re-adjustto the dark. Wh

And, if your tires do not have much tread left,you will get even less traction. It is always wise togo slower and be cautious if rain starts to fallwh

HydroplaningHydroplaning is dangerous. So much water canbuild up under your tires that they can actually rideon the water. This can happen if the road

Driving Through Flowing Water{CAUTION:Flowing or rushing water creates strongforces. If you try to drive through flowingwater, as you might at a low wa

City DrivingOne of the biggest problems with city streets isthe amount of traffic on them. You will wantto watch out for what the other drivers are do

Freeway DrivingMile for mile, freeways — also called thruways,parkways, expressways, turnpikes, orsuperhighways — are the safest of all roads. Butthey

Before changing lanes, check your mirrors.Then use your turn signal.Just before you leave the lane, glance quicklyover your shoulder to make sure ther

Here are some things you can check before a trip:• Windshield Washer Fluid: Is the reservoirfull? Are all windows clean inside and outside?• Wiper Bla

How to Use This ManualMany people read the owner manual frombeginning to end when they first receive their newvehicle. If this is done, it can help you

The lap part of the belt should be worn low andsnug on the hips, just touching the thighs. Ina crash, this applies force to the strong pelvicbones. An

Hill and Mountain RoadsDriving on steep hills or mountains is differentfrom driving in flat or rolling terrain.If you drive regularly in steep country,

{CAUTION:Coasting downhill in NEUTRAL (N) or withthe ignition off is dangerous. Your brakeswill have to do all the work of slowingdown. They could get

Winter DrivingHere are some tips for winter driving:• Have your vehicle in good shape for winter.• You may want to put winter emergencysupplies in you

What is the worst time for this? Wet ice. Very coldsnow or ice can be slick and hard to drive on.But wet ice can be even more trouble because itmay of

The Anti-Lock Brake System (ABS) improves yourvehicle’s stability when you make a hard stopon a slippery road. Even though you have ABS,you will want

You can run the engine to keep warm, but becareful.{CAUTION:Snow can trap exhaust gases under yourvehicle. This can cause deadly CO (carbonmonoxide) g

You will need a well-charged battery to restart thevehicle, and possibly for signaling later on withyour headlamps. Let the heater run for a while.The

Notice: Spinning the wheels can destroy partsof your vehicle as well as the tires. If youspin the wheels too fast while shiftingthe transmission back

Recovery Hooks{CAUTION:These hooks, when used, are under a lotof force. Always pull the vehicle straightout. Never pull on the hooks at asideways angl

Loading Your VehicleIt is very important to know how much weight yourvehicle can carry. This weight is called thevehicle capacity weight and includes

To unlatch the belt, push the button on the buckle.Rear Safety Belt Comfort GuidesRear shoulder belt comfort guides may provideadded safety belt comfo

The Tire and Loading Information label also showsthe size of the original equipment tires (C) andthe recommended cold tire inflation pressures (D).For

Item Description TotalAVehicle CapacityWeight for Example 1 =1,000 lbs (453 kg)BSubtractOccupant Weight150 lbs (68 kg) × 2 =300 lbs (136 kg)CAvailable

Item Description TotalAVehicle Capacity Weightfor Example 3 =1,000 lbs (453 kg)BSubtract OccupantWeight 200 lbs(91 kg) × 5 =1000 lbs (453 kg)CAvailabl

To find out the actual loads on your front and rearaxles, you need to go to a weigh station and weighyour vehicle. Your dealer can help you with this.B

If you put things inside your vehicle — likesuitcases, tools, packages, or anythingelse — they go as fast as the vehicle goes.If you have to stop or t

Two-Tiered LoadingBy positioning four 2 inches (5 cm) by 6 inches(15 cm) wooden planks across the width ofthe pickup box, you can create an upper load

Adding a Snow Plow or SimilarEquipmentBefore installing a snow plow on your vehicle,here are some things you will need to know:Notice: If your vehicle

Say, for example, you have a 700 lb (318 kg)snow plow. The total weight of all occupants andcargo inside the cab should not exceed 300 lb(135 kg). Thi

Q: What is front axle reserve capacity, andhow do I calculate it?A: Front axle reserve capacity is the differencebetween your front Gross Axle Weight

For example, adding a 700 lb (318 kg) snow plowactually adds more than 700 lbs (318 kg) to thefront axle. Using the formula, if the snow plowis 4 ft (

3. Be sure that the belt is not twisted and it liesflat. The elastic cord must be under the beltand the guide on top.{CAUTION:A safety belt that is not

Q: What is total vehicle reserve capacity?A: This is the difference between your GVWR andthe weight of your truck with full fuel andpassengers. It is

Truck-Camper Loading InformationA vehicle specific Truck-Camper Loadinginformation label is attached to the inside of yourvehicle’s glove box. This lab

Here is an example of proper truck and campermatch:A. Camper Center of GravityB. Recommended Center of Gravity Location ZoneWhen the truck is used to

If your vehicle has gone over the weight ratings,move or take out some things until all theweight falls below the ratings.Secure loose items to preven

Recreational Vehicle TowingRecreational vehicle towing means towing yourvehicle behind another vehicle – such as behind amotorhome. The two most commo

Four-Wheel-Drive VehiclesUse the following procedure to tow your vehicle:1. Shift an automatic transmission to PARK (P),or a manual transmission to FI

Dolly TowingFront Towing (Front Wheels Off the Ground)Two-Wheel-Drive VehiclesNotice: If you tow a two-wheel-drive vehiclewith the rear wheels on the

{CAUTION:Shifting a four-wheel-drive vehicle’stransfer case into NEUTRAL can causeyour vehicle to roll even if the transmissionis in PARK (P) for an a

Four-Wheel-Drive VehiclesUse the following procedure to tow your vehiclefrom the rear:1. Drive the vehicle onto the dolly.2. Firmly set the parking br

Towing a TrailerDo not tow a trailer during break-in. See NewVehicle Break-In on page 134 for more information.{CAUTION:If you do not use the correct

4. Buckle, position, and release the safety beltas described in Rear Seat Passengers onpage 38. Make sure that the shoulderbelt crosses the shoulder.T

If You Do Decide To Pull A TrailerIf you do, here are some important points:• There are many different laws, including speedlimit restrictions, having

Tow/Haul is designed to be most effective whenthe vehicle and trailer combined weight is atleast 75 percent of the vehicle’s Gross CombinedWeight Rati

Use one of the following charts to determine how much your vehicle can weigh, based upon your vehiclemodel and options.C-1500 Regular CabStandard Box

C-1500 HD Crew CabStandard Box (2WD)*Axle Ratio Maximum Trailer Weight GCWR6000 V83.734.108,300 lbs (3 765 kg)10,300 lbs (4 672 kg)14,000 lbs (6 350 k

C-1500 Regular CabLong Box (2WD)*Axle Ratio Maximum Trailer Weight GCWR4800 V83.233.736,200 lbs (2 812 kg)7,200 lbs (3 266 kg)11,000 lbs (4 994 kg)12,

K-1500 Regular CabStandard Box (4WD)*Axle Ratio Maximum Trailer Weight GCWR5300 V83.423.734.108,100 lbs (3 674 kg)8,100 lbs (3 674 kg)9,100 lbs (4 128

K-1500 Extended CabShort Box (4WD)*Axle Ratio Maximum Trailer Weight GCWR5300 V83.42/3.734.107,700 lbs (3 493 kg)8,700 lbs (3 946 kg)13,000 lbs (5 902

K-1500 Extended CabLong Box (4WD)*Axle Ratio Maximum Trailer Weight GCWR4800 V83.423.734.106,500 lbs (2 948 kg)6,500 lbs (2 948 kg)7,500 lbs (3 402 kg

C-2500 Crew CabStandard Box HD (2WD)*Axle Ratio Maximum Trailer Weight GCWR6.6L V8 Diesel 3.73 15,400 lbs (6 985 kg) 22,000 lbs (9 979 kg)*Fifth-wheel

C-2500 Crew Cab LongBox HD (2WD)*Axle Ratio Maximum Trailer Weight GCWR6000 V8 3.73 10,000 lbs (4 536 kg) 16,000 lbs (7 257 kg)8100 V83.734.1013,500 l

Child RestraintsOlder ChildrenOlder children who have outgrown booster seatsshould wear the vehicle’s safety belts.Q: What is the proper way to wear s

K-2500 Crew CabStandard Box HD (4WD)*Axle Ratio Maximum Trailer Weight GCWR6.6L V8 Diesel 3.73 14,200 lbs (6 441 kg) 22,000 lbs (9 979 kg)*Fifth-wheel

K-2500 Crew Cab LongBox HD (4WD)*Axle Ratio Maximum Trailer Weight GCWR6000 V8 4.10 9,700 lbs (4 400 kg) 16,000 lbs (7 257 kg)8100 V83.734.1013,200 lb

C-3500 Extended Cab(2WD)*Axle Ratio Maximum Trailer Weight GCWR6.6L V8 Diesel (DualRear Wheels) (Manual)3.73 15,100 lbs (6 849 kg) 22,000 lbs (9 979 k

K-3500 Regular Cab (4WD)* Axle Ratio Maximum Trailer Weight GCWR6000 V8 Single Rear Wheel 4.10 10,000 lbs (4 536 kg) 16,000 lbs (7 257 kg)6000 V8 Dual

K-3500 Extended Cab (4WD)*Axle Ratio Maximum Trailer Weight GCWR6.6L V8 Dual Rear Wheel(Manual)3.73 14,800 lbs (6 713 kg) 22,000 lbs (9 979 kg)6.6L V8

The Gross Combination Weight Rating (GCWR)is the total allowable weight of the completelyloaded vehicle and trailer including anypassengers, cargo, eq

The trailer tongue weight (A) should be 10 percentto 15 percent of the total loaded trailer weight,up to a maximum of 600 lbs (272 kg) for the1500 or

Consider the following example:A vehicle model base weight is 5,500 lbs(2 495 kg); 2,800 lbs (1 270 kg) at the front axleand 2,700 lbs (1 225 kg) at t

The effect of tongue weight is about 1.5 times theactual weight. Dividing the 900 lbs (408 kg) by1.5 leaves you with being able to handle only600 lbs

Weight-Distributing Hitches and WeightCarrying HitchesA: Body to Ground DistanceB: Front of VehicleWhen using a weight-distributing hitch, the hitchmu

{CAUTION:Never do this.Here two children are wearing the samebelt. The belt can not properly spread theimpact forces. In a crash, the two childrencan

The hitch should be located in the pickup bed sothat it’s centerline is over or slightly in front of therear axle. Take care that it is not so far for

Driving with a Trailer{CAUTION:If you have a rear-most window open andyou pull a trailer with your vehicle, carbonmonoxide (CO) could come into yourve

Before you start, check all trailer hitch parts andattachments, safety chains, electrical connector,lamps, tires and mirror adjustment. If the trailer

Turn Signals When Towing a TrailerThe arrows on your instrument panel willflash whenever you signal a turn or lane change.Properly hooked up, the trail

Parking on Hills{CAUTION:You really should not park your vehicle,with a trailer attached, on a hill. Ifsomething goes wrong, your rig couldstart to mo

CAUTION: (Continued)Always put the automatic transmissionshift lever fully in PARK (P) with theparking brake firmly set. If you have amanual transmissi

Maintenance When Trailer TowingYour vehicle will need service more often whenyou’re pulling a trailer. See ScheduledMaintenance (Gasoline Engine) on p

Heavy-DutyTrailer Wiring HarnessPackageFor vehicles equipped with heavy duty trailering,the harness is connected to the trailer mounted tothe hitch pl

Camper/Fifth-Wheel Trailer Wiring PackageThe eight-wire camper harness is located underthe front edge of the pickup box on the driver’sside of the veh

Electric Brake Control Jumper{CAUTION:Be sure to use only the correct trailerbrake harness, the one intended for useon your vehicle. If you use some o

{CAUTION:Never do this.Here a child is sitting in a seat that has alap-shoulder belt, but the shoulder part isbehind the child. If the child wears the

Auxiliary BatteryThe auxiliary battery provision can be used tosupply electrical power to additional equipment thatyou may choose to add, such as a sl

Power Take-Off (PTO)Before using a Power Take-Off (PTO), if equipped,refer to the manufacturer’s or installer’s instructions.To engage a PTO on a vehi

Preset Mode: PTO speed control mode is usedfor stationary applications. (PTO will remainengaged while mobile in the preset mode, howeverPTO set and re

All engine speed values listed above are factorypreset values. With the exception of the TCClockup speed (1,100 rpm) and the “tap” increment(100 rpm),

✍ NOTES464

Service ... 468Accessories and Modifications ... 468California Proposition 65 Warn

Noise Control System ... 531Tampering with Noise Control SystemProhibited ...

Washing Your Vehicle ... 592Cleaning Exterior Lamps/Lenses ... 593Finish Care ...

ServiceYour dealer knows your vehicle best and wantsyou to be happy with it. We hope you will goto your dealer for all your service needs. You willget

California Proposition 65 WarningMost motor vehicles, including this one, containand/or emit chemicals known to the State ofCalifornia to cause cancer

Infants and Young ChildrenEveryone in a vehicle needs protection! Thisincludes infants and all other children. Neither thedistance traveled nor the ag

Adding Equipment to the Outsideof Your VehicleThings you might add to the outside of yourvehicle can affect the airflow around it. This maycause wind n

If your vehicle has the 6.0L V8 engine(VIN Code N), use premium unleaded gasolinewith a posted octane rating of 91 or higher.You may also use regular

AdditivesTo provide cleaner air, all gasolines in the UnitedStates are now required to contain additivesthat will help prevent engine and fuel systemd

Fuel E85 (85% Ethanol)The 8th digit of your Vehicle Identification Number(VIN) shows the code letter or number thatidentifies your engine. You will find

E85 has less energy per gallon than gasoline, soyou will need to refill your fuel tank more oftenwhen using E85 than when you are using gasoline.See Fi

The tethered fuel cap is located behind a hingedfuel door on the driver’s side of the vehicle. Ifthe vehicle has E85 fuel capability, a yellow capwith

When replacing the fuel cap, turn it clockwise until itclicks. It will require more effort to turn the fuel capon the last turn as you tighten it. Mak

Filling a Portable Fuel Container{CAUTION:Never fill a portable fuel container whileit is in your vehicle. Static electricitydischarge from the contain

Checking Things Underthe Hood{CAUTION:An electric fan under the hood can start upand injure you even when the engine is notrunning. Keep hands, clothi

Hood ReleaseTo open the hood do the following:1. Pull the handle withthis symbol on it. Itis located insidethe vehicle tothe lower left of thesteering

{CAUTION:People should never hold a baby in theirarms while riding in a vehicle. A babydoes not weigh much — until a crash.During a crash a baby will

Engine Compartment OverviewWhen you open the hood on the 4.3L V6 engine, here is what you will see:480

A. Engine Air Cleaner/Filter. See Engine AirCleaner/Filter (Gasoline Engines) on page 491.B. Coolant Surge Tank and Pressure Cap. SeeEngine Coolant on

When you open the hood on the 5.3L V8 engine (4.8L and 6.0L V8 engines similar), here is what youwill see:482

A. Engine Air Cleaner/Filter. See Engine AirCleaner/Filter (Gasoline Engines) on page 491.B. Coolant Surge Tank and Pressure Cap. SeeEngine Coolant on

When you open the hood on the 8.1L V8 engine, here is what you will see:484

A. Engine Air Cleaner/Filter. See Engine AirCleaner/Filter (Gasoline Engines) on page 491.B. Coolant Surge Tank and Pressure Cap. SeeEngine Coolant on

Engine Oil (Gasoline Engine)If your vehicle has a diesel engine, see “EngineOil” in the DURAMAX®Diesel Engine Supplement.If the CHECK OIL LEVEL light

When to Add Engine OilIf the oil is below the cross-hatched area at thetip of the dipstick, you will need to add at leastone quart/liter of oil. But y

What Kind of Engine Oil to UseLook for two things:• GM6094MYour vehicle’s engine requires oil meetingGM Standard GM6094M. You should look forand use o

If you are in an area of extreme cold, where thetemperature falls below −20°F (−29°C), it isrecommended that you use either an SAE 5W-30synthetic oil

{CAUTION:Children who are up against, or very closeto, any airbag when it inflates can beseriously injured or killed. Airbags pluslap-shoulder belts of

How to Reset the Engine Oil LifeSystemThe Engine Oil Life System calculates when tochange the engine oil and filter based on vehicleuse. Any time the o

Engine Air Cleaner/Filter(Gasoline Engines)If your vehicle has a diesel engine, see “PickupModels” under “Engine Air Cleaner/Filter” inthe DURAMAX®Die

How to Inspect the Engine AirCleaner/FilterVehicles With an Air Filter RestrictionIndicatorLocate the air filter restriction indicator on theengine air

3. Remove the engine air cleaner/filter from thehousing. Care should be taken not to dislodgedirt in the air cleaner.4. Clean the engine air cleaner/fil

Automatic Transmission Fluid(Allison Transmission®)When to Check and Change AutomaticTransmission FluidA good time to check your automatic transmissio

3. With your foot on the brake pedal, run theengine for at least once minute and shift toDRIVE (D). Then shift to NEUTRAL (N) andthen REVERSE (R) to fi

Hot Check ProcedureThe fluid must be hot to ensure an accuratecheck. The fluid level rises as the temperatureincreases.1. Operate the transmission in DR

Automatic Transmission Fluid(Except Allison Transmission®)When to Check and Change AutomaticTransmission FluidA good time to check your automatic tran

A cold fluid check can be made after the vehiclehas been sitting for eight hours or more withthe engine off, but this is used only as a reference.Let t

3. Check both sides of the dipstick, and read thelower level. The fluid level must be in theCOLD area, below the cross-hatched area, fora cold check or

Vehicle Damage WarningsAlso, in this manual you will find these notices:Notice: These mean there is somethingthat could damage your vehicle.A notice te

Q: What are the different types of add-onchild restraints?A: Add-on child restraints, which are purchased bythe vehicle’s owner, are available in four

Manual Transmission FluidWhen to Check Manual TransmissionFluidA good time to have your manual transmissionfluid checked is when the engine oil is chan

How to Add Manual Transmission FluidHere is how to add fluid. Refer to the MaintenanceSchedule to determine what kind of fluid touse. See Recommended Fl

How to Check and Add FluidThe proper fluid should be added if the level doesnot reach the bottom of the diaphragm when itis in place in the reservoir.

What to UseUse a mixture of one-half clean, drinkable waterand one-half DEX-COOL®coolant which willnot damage aluminum parts. If you use this coolantm

Checking CoolantThe coolant surge tank is located in the enginecompartment on the passenger’s side of thevehicle. See Engine Compartment Overview onpa

Adding CoolantIf you need more coolant, add the properDEX-COOL®coolant mixture at the surge tank,but only when the engine is cool. See CoolingSystem o

If Steam Is Coming From Your Engine{CAUTION:Steam from an overheated engine canburn you badly, even if you just open thehood. Stay away from the engin

If No Steam Is Coming From YourEngineThe ENGINE COOLANT HOT message, alongwith a low coolant condition, can indicate a seriousproblem.If you get an en

Overheated Engine ProtectionOperating Mode (V8 Engines Only)If an overheated engine condition exists andthe REDUCED ENGINE POWER messageis displayed,

A. Coolant Surge TankB. Coolant Surge Tank Pressure CapC. Engine Cooling Fan{CAUTION:An electric fan under the hood can start upand injure you even wh

{CAUTION:The body structure of a young child isquite unlike that of an adult or older child,for whom the safety belts are designed. Ayoung child’s hip

The coolant level shouldbe at or above the FULLCOLD mark. If it is not,you may have a leak atthe pressure cap or inthe radiator hoses,heater hoses, ra

How to Add Coolant to the CoolantSurge Tank for Gasoline EnginesIf your vehicle has a diesel engine, see “CoolingSystem” in the DURAMAX®Diesel Supplem

{CAUTION:Adding only plain water to your coolingsystem can be dangerous. Plain water, orsome other liquid such as alcohol, canboil before the proper c

2. Then keep turning the pressure cap slowly,and remove it.3. Fill the coolant surge tank with the propermixture, to the FULL COLD mark.4. With the co

Engine Fan NoiseIf your vehicle has a clutched engine cooling fan,when the clutch is engaged, the fan spinsfaster to provide more air to cool the engi

Power Steering FluidSee EngineCompartment Overviewon page 480 forreservoir location.When to Check Power Steering FluidIt is not necessary to regularly

Windshield Washer FluidWhat to UseWhen you need windshield washer fluid, be sureto read the manufacturer’s instructions beforeuse. If you will be opera

BrakesBrake FluidYour brake mastercylinder reservoir isfilled with DOT-3 brakefluid. See EngineCompartment Overviewon page 480 for thelocation of the re

Checking Brake FluidYou can check the brake fluid without taking offthe cap.Just look at the brakefluid reservoir. The fluidlevel should be aboveMIN. If

Brake WearYour vehicle has front disc brakes and may haverear drum brakes or rear disc brakes.Disc brake pads have built-in wear indicators thatmake a

A rear-facing infant seat (B) provides restraint withthe seating surface against the back of theinfant. The harness system holds the infant inplace an

Replacing Brake System PartsThe braking system on a vehicle is complex. Itsmany parts have to be of top quality and workwell together if the vehicle i

Jump StartingIf your vehicle’s battery (or batteries) has rundown, you may want to use another vehicle andsome jumper cables to start your vehicle. Be

3. Get the vehicles close enough so the jumpercables can reach, but be sure the vehicles arenot touching each other. If they are, it couldcause a grou

5. Open the hoods and locate the positive (+)and negative (−) terminal locations of theother vehicle.Your vehicle has a remote positive (+) jumpstarti

{CAUTION:Fans or other moving engine parts caninjure you badly. Keep your hands awayfrom moving parts once the engine isrunning.6. Check that the jump

8. Do not let the other end touch metal. Connectit to the positive (+) terminal of the goodbattery. Use a remote positive (+) terminal ifthe vehicle h

Notice: If the jumper cables are connected orremoved in the wrong order, electrical shortingmay occur and damage the vehicle. The repairswould not be

Rear AxleWhen to Check LubricantIt is not necessary to regularly check rear axlefluid unless you suspect there is a leak or you hearan unusual noise. A

• The proper level for the 2500HD with the6.6L diesel engine (RPO LLY) or 8.1L V8engine (RPO L18), and 3500 Series is from0.6 to 0.8 inch (17 mm to 21

To get an accurate reading, the vehicle should beon a level surface.If the level is below the bottom of the filler plughole, located on the transfer ca

A booster seat (F-G) is a child restraint designedto improve the fit of the vehicle’s safety beltsystem. Some booster seats have a shoulder beltpositio

How to Check LubricantTo get an accurate reading, the vehicle should beon a level surface.If the level is below the bottom of the filler plughole, loca

Noise Control SystemTampering with Noise ControlSystem ProhibitedThe following information relates to compliancewith federal noise emission standards

Fan and Drive:•Removal of fan clutch, if the vehicle has one,or rendering clutch inoperative.• Removal of the fan shroud, if the vehiclehas one.Air In

HeadlampsTo replace a headlamp bulb, do the following:1. Open the hood. See Hood Release onpage 479 for more information.2. Remove the two pins on the

Front Turn Signal, Sidemarker andDaytime Running LampsA. Sidemarker LampB. Retainer ClipC. Front Turn Signal LampD. Daytime Running Lamp (DRL)To repla

5. Press the locking release lever, turn the bulbsocket counterclockwise and remove it fromthe turn signal assembly.6. Remove the old bulb from the bu

2. Install a new bulbinto the socket andturn it clockwiseuntil it locksinto place.3. Reinstall the lens and tighten the screws.To replace a center roo

Center High-Mounted Stoplamp(CHMSL) and Cargo LampTo replace one of these bulbs, do the following:1. Remove the screws and lift off the lampassembly.A

4. If a CHMSL bulb is replaced, put the new bulbinto the socket and press it in until it is tight.If a cargo lamp is replaced, put a newcargo lamp bul

Taillamps, Turn Signal, Stoplampsand Back-up LampsTo replace one of these bulbs, do the following:1. Open the tailgate. Tailgate on page 127for more i

Securing an Add-on Child Restraint inthe Vehicle{CAUTION:A child can be seriously injured or killedin a crash if the child restraint is notproperly se

A. Stoplamp/TaillampB. Turn Signal LampC. Back-up LampD. Sidemarker LampTaillamps (Chassis Cab Models)A. Turn Signal LampB. Taillamp/StoplampC. Back-u

License Plate LampTo replace one of these bulbs, do the following:1. Reach under the rear bumper for the bulbsocket.2. Turn the bulb socket counterclo

Windshield Wiper BladeReplacementWindshield wiper blades should be inspected forwear and cracking. See Scheduled Maintenance(Gasoline Engine) on page

TiresYour new vehicle comes with high-quality tiresmade by a leading tire manufacturer. If you everhave questions about your tire warranty and whereto

20-Inch TiresIf your vehicle has the optional 20-inchP275/55R20 size tires, they are classified astouring tires and are designed for on road use. Thelo

(B) TPC Spec (Tire Performance CriteriaSpecification): Original equipment tires designedto GM’s specific tire performance criteria havea TPC specificatio

(A) Tire Size: The tire size code is a combinationof letters and numbers used to define a particulartire’s width, height, aspect ratio, constructiontyp

(F) Tire Ply Material: The type of cord andnumber of plies in the sidewall and underthe tread.(G) Single Tire Maximum Load: Maximum loadthat can be ca

(C) Aspect Ratio: A two-digit number thatindicates the tire height-to-width measurements.For example, if the tire size aspect ratio is 75, asshown in

Cold Tire Pressure: The amount of air pressurein a tire, measured in pounds per square inch(psi) or kilopascals (kPa) before a tire has built upheat f

{CAUTION:A child can be seriously injured or killedin a crash if the child is not properlysecured in the child restraint. Make surethe child is proper

Occupant Distribution: Designated seatingpositions.Outward Facing Sidewall: The side of anasymmetrical tire that has a particular side thatfaces outwa

Vehicle Maximum Load on the Tire: Load onan individual tire due to curb weight, accessoryweight, occupant weight, and cargo weight.Vehicle Placard: A

How to CheckUse a good quality pocket-type gage to checktire pressure. You cannot tell if your tires areproperly inflated simply by looking at them.Rad

Tire Inspection and RotationTires should be rotated every 5,000 to 8,000 miles(8 000 to 13 000 km).Any time you notice unusual wear, rotate yourtires

If your vehicle has dual rear wheels and the treaddesign for your front tires is the same as yourrear tires, always use one of the correct rotationpat

{CAUTION:Rust or dirt on a wheel, or on the parts towhich it is fastened, can make wheel nutsbecome loose after a time. The wheelcould come off and ca

You need a new tire if any of the followingstatements are true:• You can see the indicators at three or moreplaces around the tire.• You can see cord

{CAUTION:Mixing tires could cause you to losecontrol while driving. If you mix tires ofdifferent sizes, brands, or types (radialand bias-belted tires)

Different Size Tires and WheelsIf you add wheels or tires that are a different sizethan your original equipment wheels and tires,this may affect the w

Uniform Tire Quality GradingQuality grades can be found where applicable onthe tire sidewall between tread shoulder andmaximum section width. For exam

Never put a rear facing child restraint in the rightfront passenger seat unless the airbag is off.Here is why:{CAUTION:A child in a rear-facing child

Temperature – A, B, CThe temperature grades are A (the highest), B,and C, representing the tire’s resistance to thegeneration of heat and its ability

Each new wheel should have the sameload-carrying capacity, diameter, width, offsetand be mounted the same way as the oneit replaces.If you need to rep

Used Replacement Wheels{CAUTION:Putting a used wheel on your vehicle isdangerous. You cannot know how it hasbeen used or how far it has been driven. I

CAUTION: (Continued)Use another type of traction deviceonly if its manufacturer recommendsit for use on your vehicle and tire sizecombination and road

A rear blowout, particularly on a curve, acts muchlike a skid and may require the same correctionyou would use in a skid. In any rear blowoutremove yo

CAUTION: (Continued)3. If you have a four-wheel-drive vehicle,be sure the transfer case is in a drivegear – not in NEUTRAL.4. Turn off the engine and

Removing the Spare Tire and ToolsA. KnobB. Retaining HookC. Wheel BlocksD. Wing Nut RetainingWheel BlocksE. JackA. Wing NutRetaining WheelBlocksB. Whe

A. Wing Nut RetainingWheel BlocksB. Wheel BlocksC. Retaining HookD. JackE. KnobF. Tool Kit andJack ToolsG. Retaining Bracketand Wing NutA. Wing Nut Re

For regular cab models, the equipment you willneed is behind the passenger’s seat. For extendedand crew cab models, the equipment is on the shelfbehin

1. Open the spare tire lock cover on the bumperand use the ignition key to remove the lock,if equipped with a spare tire lock (J). Toremove the spare

{CAUTION:A child in a child restraint in the centerfront seat can be badly injured or killed bythe right front passenger’s airbag if itinflates. Never

4. Turn the wheel wrench (H) counterclockwiseto lower the spare tire to the ground. Continueto turn the wheel wrench until the spare tirecan be pulled

Removing the Flat Tire andInstalling the Spare TireUse the following pictures and instructions toremove the flat tire and raise the vehicle.The tools y

If the wheel has a smooth center cap, placethe chisel end of the wheel wrench in theslot on the wheel, and gently pry it out.2. Use the wheel wrench a

A. Front Location (Two-Wheel-Drive1500 Model)B. Front Location (All Other Models)C. Rear Location (All Models)3. Position the jack under the vehicle a

{CAUTION:Raising your vehicle with the jackimproperly positioned can damage thevehicle and even make the vehicle fall. Tohelp avoid personal injury an

4. Make sure the jack head is positioned so thatthe rear axle is resting securely between thegrooves that are on the jack head.5. Turn the wheel wrenc

6. Remove all thewheel nuts and takeoff the flat tire.{CAUTION:Rust or dirt on the wheel, or on the partsto which it is fastened, can make thewheel nut

{CAUTION:Never use oil or grease on studs or nuts.If you do, the nuts might come loose.Your wheel could fall off, causing aserious accident.9. Put the

11. Turn the wheel wrench counterclockwise tolower the vehicle. Lower the jack completely.Front Position - 2WD 1500 Model Rear Position578

{CAUTION:Incorrect wheel nuts or improperlytightened wheel nuts can cause the wheelto come loose and even come off. Thiscould lead to an accident. Be

Lower Anchors and Tethers forChildren (LATCH)The LATCH system holds a child restraint duringdriving or in a crash. This system is designedto make inst

Secondary Latch SystemYour vehicle has an underbody-mounted tire hoistassembly that has a secondary latch system. Itis designed to stop the spare tire

4. Repeat this procedure at least two times. Ifthe spare tire lowers to the ground, continuewith Step 5 of Removing the Spare Tireand Tools on page 56

9. Position the center lift point of the jack underthe center of the spare tire.10. Turn the wheel wrench clockwise to raise thejack until it lifts th

14. Use one hand to push against the spare whilefirmly pulling the jack out from under thespare tire with the other hand.If the spare tire is hanging f

Storing a Flat or Spare Tireand Tools{CAUTION:Storing a jack, a tire, or other equipmentin the passenger compartment of thevehicle could cause injury.

G. Hoist Shaft AccessHoleH. Wheel WrenchI. Jack HandleExtensionsJ. Spare Tire Lock(If Equipped)1. Put the tire on the ground at the rear of thevehicle

4. Insert the hoistend (F) through thehole (G) in therear bumper. Besure the hoist end ofthe extension (F)connects to the hoistshaft (E). Theribbed sq

To store the jack and jack tools, do the following:A. Wing NutB. Wheel BlocksC. RetainingBracket andWing NutD. Wheel Wrenchand ExtensionsE. Tool BagF.

Spare TireYour vehicle, when new, had a fully-inflated sparetire. A spare tire may lose air over time, so check itsinflation pressure regularly. See Infl

Appearance CareCleaning the Inside of Your VehicleYour vehicle’s interior will continue to look itsbest if it is cleaned often. Although not alwaysvis

Top Tether AnchorA top tether (A, C) anchors the top of the childrestraint to the vehicle. A top tether anchor is builtinto the vehicle. The top tethe

Do not clean your vehicle using the followingcleaners or techniques:• Never use a knife or any other sharp object toremove a soil from any interior su

4. Continue to gently rub the soiled area until thecleaning cloth remains clean.5. If the soil is not completely removed, use amild soap solution and

Some commercial products may increase gloss onyour instrument panel. The increase in glossmay cause annoying reflections in the windshieldand even make

Dry the finish with a soft, clean chamois or anall-cotton towel to avoid surface scratchesand water spotting.High pressure car washes may cause water t

Protecting Exterior Bright Metal PartsBright metal parts should be cleaned regularly tokeep their luster. Washing with water is all that isusually nee

The surface of these wheels is similar to thepainted surface of your vehicle. Do not use strongsoaps, chemicals, abrasive polishes, abrasivecleaners,

Finish DamageAny stone chips, fractures or deep scratches inthe finish should be repaired right away. Baremetal will corrode quickly and may develop in

Vehicle Care/Appearance MaterialsDescription UsagePolishing ClothWax-TreatedInterior and exteriorpolishing cloth.Tar and Road OilRemoverRemoves tar, r

Vehicle IdentificationVehicle Identification Number (VIN)This is the legal identifier for your vehicle. Itappears on a plate in the front corner of thein

Electrical SystemAdd-On Electrical EquipmentNotice: Do not add anything electrical to yourvehicle unless you check with your dealerfirst. Some electric

These are some examples of symbols that may be found on the vehicle:6

Lower Anchor and Top Tether AnchorLocationsi (Top Tether Anchor):Seating positions withtop tether anchors.i (Top Tether Anchor):Seating positions with

Fuses and Circuit BreakersThe wiring circuits in your vehicle are protectedfrom short circuits by a combination of fuses, circuitbreakers and fusible

Fuses UsageRR WPR Not UsedSEO ACCYSpecial Equipment OptionAccessoryWS WPR Windshield WipersTBC ACCYTruck Body ControllerAccessoryIGN 3 Ignition, Heate

Fuses UsageLT TRNLeft Turn Signals andSidemarkersVEH STOPVehicle Stoplamps, BrakeModule, Electronic ThrottleControl ModuleRT TRLR ST/TRN Right Turn Si

Device UsageHDLR 2 Headliner Wiring ConnectorBODY Body Wiring ConnectorDEFOG Rear Defogger RelayHDLNR 1 Headliner Wiring Connector 1SPARE RELAY Not Us

604

1* Fuel Injection Rail #2-Gasoline Engine; EngineControl Module-Diesel Engine.2* Fuel Injection Rail #1-Gasoline Engine;Actuator-Diesel Engine.3* Oxyg

Fuses UsageLBEC 1Left Bussed Electrical Center,Left Doors, Truck BodyController, Flasher ModuleTRL PARK Parking Lamps Trailer WiringRR PARKRight Rear

Fuses UsageDRL Daytime Running LampsRVC Regulated Voltage ControlIPC/DICInstrument PanelCluster/Driver InformationCenterHVAC/ECAS Climate Control Cont

Auxiliary Electric Cooling FanFuse BlockThe auxiliary electriccooling fan fuse block islocated in the enginecompartment onthe driver’s side of thevehi

Capacities and SpecificationsThe following approximate capacities are given in English and metric conversions. See RecommendedFluids and Lubricants on

i (Top Tether Anchor):Seating positions withtop tether anchors.j (Lower Anchor):Seating positions withtwo lower anchors.i (Top Tether Anchor):Seating

ApplicationCapacitiesEnglish Metric8.1L V8 HD Automatic* 25.0 qt 23.7 L8.1L V8 Automatic* 26.9 qt 25.5 L8.1L V8 Manual* 27.1 qt 25.6 L* Engine Fan Dri

ApplicationCapacitiesEnglish MetricTransfer Case Fluid 2.0 qt 1.9 LWheel Nut Torque 140 ft lb190 YAfter refill, the level must be rechecked. Add enough

✍ NOTES612

Maintenance Schedule ... 614Introduction ... 614Maintenance Requirements ...

Maintenance ScheduleIntroductionThis maintenance section applies to vehicles witha gasoline engine. If your vehicle has a dieselengine, see the mainte

Your Vehicle and the EnvironmentProper vehicle maintenance not only helps to keepyour vehicle in good working condition, but alsohelps the environment

This schedule is for vehicles that:• carry passengers and cargo withinrecommended limits. You will find these limitson the Tire and Loading Information

If you want to purchase service information, seeService Publications Ordering Information onpage 657.Owner Checks and Services on page 625 tells youwh

If the engine oil life system is ever resetaccidentally, you must service your vehicle within3,000 miles (5 000 km) since your last service.Remember t

Scheduled MaintenanceService Maintenance I Maintenance IIChange engine oil and filter. See Engine Oil (Gasoline Engine) on page 486.Reset oil life syst

For regular cab models with a bench seat, the toptether anchors are located under trim covers on theback panel behind the center and passenger seats.D

Scheduled Maintenance (cont’d)Service Maintenance I Maintenance IIInspect suspension and steering components. See footnote (b). •Inspect engine coolin

Additional Required Services (Gasoline Engine)This maintenance section applies to vehicles with a gasoline engine. If your vehicle has a diesel engine

Additional Required Services (cont’d)Service and Miles (Kilometers)25,000(40 000)50,000(80 000)75,000(120 000)100,000(160 000)125,000(200 000)150,000(

Maintenance Footnotes(Gasoline Engine)This maintenance section applies to vehicles witha gasoline engine. If your vehicle has a dieselengine, see the

(e) Make sure the safety belt reminder light and allyour belts, buckles, latch plates, retractors, andanchorages are working properly. Look forany oth

(k) Inspect system. Check all fuel and vapor linesand hoses for proper hook-up, routing, andcondition. Check that the purge valve, if the vehiclehas o

At Each Fuel FillIt is important to perform these underhood checksat each fuel fill.Engine Oil Level CheckCheck the engine oil level and add the proper

At Least Once a YearStarter Switch Check{CAUTION:When you are doing this inspection, thevehicle could move suddenly. If thevehicle moves, you or other

Ignition Transmission Lock CheckWhile parked, and with the parking brake set, tryto turn the ignition to LOCK in each shift leverposition.• The igniti

Park on a fairly steep hill, with the vehicle facingdownhill. Keeping your foot on the regularbrake, set the parking brake.• To check the parking brak

For crew cab models, there are covered top tetheranchors for each seating position located on theback panel of your vehicle, behind the rearseat. Remo

Usage Fluid/LubricantHydraulic BrakeSystemDelco®Supreme 11 Brake Fluid orequivalent DOT-3 brake fluid.WindshieldWasherGM Optikleen®Washer Solvent.Hydra

Usage Fluid/LubricantRear AxleSAE 75W-90 Synthetic AxleLubricant(GM Part No. U.S. 12378261,in Canada 10953455) meetingGM Specification 9986115.ManualTr

Normal Maintenance Replacement Parts (Gasoline Engines)Replacement parts identified below by name, part number, or specification can be obtained from yo

Engine Drive Belt Routing(A) Air Conditioning CompressorV6 EnginesV8 Engines633

Maintenance RecordAfter the scheduled services are performed, record the date, odometer reading, who performed theservice, and the type of services pe

Maintenance Record (cont’d)DateOdometerReadingServiced ByMaintenance I orMaintenance IIServices Performed635

Maintenance Record (cont’d)DateOdometerReadingServiced ByMaintenance I orMaintenance IIServices Performed636

Customer Assistance and Information ... 638Customer Satisfaction Procedure ... 638Online Owner Center ...

Customer Assistance andInformationCustomer Satisfaction ProcedureYour satisfaction and goodwill are importantto your dealer and to GMC. Normally, anyc

When contacting GMC, please remember thatyour concern will likely be resolved at a dealer’sfacility. That is why we suggest you followStep One first if

Securing a Child Restraint Designed forthe LATCH System{CAUTION:If a LATCH-type child restraint is notattached to anchors, the restraint will notbe ab

STEP THREE — Canadian Owners: In the eventthat you do not feel your concerns have beenaddressed after following the procedure outlined insteps 1 and 2

Online Owner CenterOnline Owner Center(United States only)The Owner Center is a resource for your GMownership needs. Specific vehicle informationcan be

Customer Assistance for TextTelephone (TTY) UsersTo assist customers who are deaf, hard of hearing,or speech-impaired and who use the TextTelephones (

All Overseas LocationsPlease contact the local General MotorsBusiness Unit.Mexico, Central America andCaribbean Islands/Countries(Except Puerto Rico a

Roadside Assistance ProgramIn the U.S. call, 1-800-GMC-8782(1-800-462-8782)In Canada, call 1-800-268-6800Service available 24 hours a day, 365 days a

• Emergency Tow From a Public Roadway orHighway: Tow to the nearest dealership forwarranty service or in the event of avehicle-disabling accident. Win

• Trip Interruption Benefits and Assistance:In the event of a warranty related vehicledisablement, while en route and over250 kilometres from original

GMC and General Motors of Canada Limitedreserve the right to limit services or reimbursementto an owner or driver when, in their solediscretion, the c

Scheduling Service AppointmentsWhen your vehicle requires warranty service,you should contact your dealer and request anappointment. By scheduling a s

In addition, for U.S. customers, should you arrangetransportation through a friend or relative, limitedreimbursement for reasonable fuel expenses mayb

{CAUTION:Children can be seriously injured orstrangled if a shoulder belt is wrappedaround their neck and the safety beltcontinues to tighten. Secure

Vehicle Data Collection and EventData RecordersYour vehicle, like other modern motor vehicles,has a number of sophisticated computer systemsthat monit

In addition, once GM collects or receives data,GM may:• use the data for GM research needs,• make it available for research whereappropriate confidenti

Recycled original equipment parts may also beused for repair. These parts are typically removedfrom vehicles that were total losses in prioraccidents.

If your vehicle is leased, the leasing companymay require you to have insurance that assuresrepairs with Genuine GM Original EquipmentManufacturer (OE

• Gather the important information you will needfrom the other driver. Things like name,address, phone number, driver’s licensenumber, vehicle license

Managing the Vehicle DamageRepair ProcessIn the event that your vehicle requires damagerepairs, GM recommends that you take an activerole in its repai

Reporting Safety DefectsReporting Safety Defects to theUnited States GovernmentIf you believe that your vehicle has a defect whichcould cause a crash

In Canada, please call us at 1-800-263-3777(English) or 1-800-263-7854 (French). Or, write:General Motors of Canada LimitedCustomer Communication Cent

Owner InformationOwner publications are written specifically forowners and intended to provide basic operationalinformation about the vehicle. The owne

AAccessories and Modifications ... 468Accessory Power Outlet(s) ... 228Adding a Snow Plow or SimilarEquipment

If the position you areusing does not have ahead restraint andyou are using a singletether, route thetether over theseatback.If the position you areus

Appearance Care (cont.)Washing Your Vehicle ... 592Weatherstrips ... 592Windshield

Bulb Replacement (cont.)Headlamps ... 533License Plate Lamps ... 541Pickup Bo

Cigarette Lighter ... 229CleaningAluminum or Chrome-Plated Wheels ... 594Exterior Lamps/Lenses ...

DDaytime Running Lamps ... 222Defensive Driving ... 356Delayed Locking ...

Engine (cont.)Check and Service Engine Soon Light ... 258Coolant ... 502Coolant Heater ...

FusesCenter Instrument Panel Fuse Block ... 602Fuses and Circuit Breakers ... 600Instrument Panel Fuse Block ...

Horn ... 213How to Use This Manual ... 4How to Wear Safety Belts

Light (cont.)Passenger Airbag Status Indicator ... 250Safety Belt Reminder ... 247Security ...

Manual Windows ... 129Memory Seat and Mirrors ... 12MessageDIC Warnings and Messages

Overheated Engine ProtectionOperating Mode ... 508Owner Checks and Services ... 625Owners, Can

2. See Securing a Child Restraint in the RightFront Seat Position (Regular and ExtendedCab) (With Airbag Off Switch) on page 78or Securing a Child Res

Rear Axle ... 527Locking ... 366Rear Door Security L

Safety Belts (cont.)How to Wear Safety Belts Properly ... 27Questions and Answers AboutSafety Belts ...

Spare Tire (cont.)Removing ... 566Storing ... 584Specifi

Tires (cont.)Uniform Tire Quality Grading ... 559Wheel Alignment and Tire Balance ... 560Wheel Replacement ...

Vehicle IdentificationNumber (VIN) ... 598Service Parts Identification Label ... 598Ventilation Adjust

2.2. When using a child restraint with a toptether in the rear passenger position,raise the head restraint and routethe top tether through the fabric

Crew Cab Models1. If the child restraint manufacturer recommendsthat the top tether be attached, attach andtighten the top tether to the top tether an

Front Seats ... 9Manual Seats ... 9Power Seats ...

If the position you areusing has an adjustablehead restraint andyou are using a dualtether, route thetether around the headrestraint.If the position y

2. Attach and tighten the lower attachments tothe lower anchors. If the child restraint doesnot have lower attachments or the desiredseating position

3. Buckle the belt. Make sure the release buttonis positioned so you would be able to unbucklethe safety belt quickly if you ever had to.4. Pull the r

5. To tighten the belt, push down on the childrestraint, pull the shoulder portion of the beltto tighten the lap portion of the belt andfeed the shoul

Securing a Child Restraint in theCenter Front Seat Position{CAUTION:A child in a child restraint in the centerfront seat can be badly injured or kille

A rear seat is a safer place to secure aforward-facing child restraint. If you need tosecure a forward-facing child restraint in the rightfront seat p

4. Buckle the belt. Make sure the release buttonis positioned so you would be able to unbucklethe safety belt quickly if you ever had to.5. Pull the r

6. To tighten the belt, push down on the childrestraint, pull the shoulder portion of the beltto tighten the lap portion of the belt andfeed the shoul

Securing a Child Restraint in theRight Front Seat Position(Regular and Extended Cab)(With Airbag Off Switch)Your vehicle has a right front passenger a

{CAUTION:A child in a rear-facing child restraint canbe seriously injured or killed if thepassenger’s airbag inflates. This isbecause the back of the r

Airbag System ... 91Where Are the Airbags? ... 93When Should an Airbag Inflate? .

Never put a rear facing child restraint in the rightfront passenger’s seat unless the airbag is off.Here is why:{CAUTION:A child in a rear-facing chil

If your child restraint has the LATCH system, seeLower Anchors and Tethers for Children(LATCH) on page 58.If your vehicle has a rear seat, there is no

3. Pick up the latch plate, and run the lap andshoulder portions of the vehicle’s safety beltthrough or around the restraint. The childrestraint instr

6. To tighten the belt, push down on the childrestraint, pull the shoulder belt to tighten thelap belt portion and feed the shoulder beltback into the

To remove the child restraint, if the top tether isattached to the top tether anchor, disconnectit. Unbuckle the vehicle’s safety belt and let it goba

Securing a Child Restraint in theRight Front Seat Position(Regular and Extended Cab)(With Passenger Sensing System)Your vehicle has a right front pass

Your vehicle may have a label on your sun visorthat says, “Never put a rear-facing child seat in thefront.” This is because the risk to the rear-facin

Never put a child in a rear-facing child restraint inthe right front passenger seat the unless passengerairbag status indicator shows off. Never put a

If your vehicle has a rear seat, there is no toptether anchor at the right front seating position. Donot secure a child seat in this position if anati

5. Pull the rest of the shoulder belt all the wayout of the retractor to set the lock.6. To tighten the belt, push down on the childrestraint, pull th

Front SeatsManual Seats{CAUTION:You can lose control of the vehicle if youtry to adjust a manual driver’s seat whilethe vehicle is moving. The suddenm

7. If your child restraint manufacturerrecommends using a top tether, and theposition you are using has a top tether anchor,attach and tighten the top

Airbag SystemYour vehicle has an airbag for the driver and anairbag for the right front passenger.Frontal airbags are designed to help reduce therisk

{CAUTION:Airbags inflate with great force, fasterthan the blink of an eye. If you are tooclose to an inflating airbag, as you wouldbe if you were leanin

There is an airbagreadiness light on theinstrument panel cluster,which shows theairbag symbol.The system checks the airbag electrical system formalfun

The right front passenger’s airbag is in theinstrument panel on the passenger’s side.{CAUTION:If something is between an occupant andan airbag, the ba

When Should an Airbag Inflate?The driver’s and right front passenger’s frontalairbags are designed to inflate in moderate tosevere frontal or near-front

In any particular crash, no one can say whetheran airbag should have inflated simply becauseof the damage to a vehicle or because of what therepair cos

Dual Stage AirbagsIf your vehicle has frontal airbags with dual stagedeployment, the amount of restraint will adjustaccording to crash severity. Your

How Does an Airbag Restrain?In moderate to severe frontal or near-frontalcollisions, even belted occupants can contact thesteering wheel or the instru

{CAUTION:When an airbag inflates, there may bedust in the air. This dust could causebreathing problems for people with ahistory of asthma or other brea