2000 GMC SierraOwner's ManualLitho in U.S.A.Part Number X2015 A First Edition Copyright General Motors Corporation 1999All Rights Reservedi

Table of ContentsSeats and Restraint SystemsSection 1Seats and Seat ControlsSafety BeltsAir Bag SystemChild RestraintsFeatures and ControlsSection 2iiKeys and Door LocksKeyless Entry System (If Equipped)TailgateAutomatic TransmissionManual Transmission OperationFour-Wheel Drive Operation (If Equipped)Parking BrakeWindowsTilt Wheel (If Equipped)Turn Signal/Multifunction LeverWindshield WipersCruise ControlInterior and Exterior LampsMirrorsStorage CompartmentsAccessory Power OutletsOnStar System (Option)Instrument Panel, Warning Lights and GagesMessage CenterOil Life

Table of Contents (cont'd)Comfort Controls and Audio SystemsSection 3Heating and Air ConditioningSetting the Radio ClockRadio/Cassette Player/CD PlayerRadio Theft-Deterrent Feature (If Equipped)Your Driving and the RoadSection 4Braking/Anti-lock BrakesSteeringDriving Tips for Various Road ConditionsOff-Road DrivingRecreational Vehicle TowingLoading Your VehicleTowing a TrailerProblems on the RoadSection 5Hazard Warning FlashersJump StartingTowing Your VehicleEngine OverheatingChanging a Flat TireIf You're Stuckiii

Table of Contents (cont'd)Service and Appearance CareSection 6FuelChecking Fluids and LubricantsPassenger Compartment Air Filter (If Equipped)Bulb ReplacementWindshield Wiper Blade ReplacementTires and WheelsAppearance CareElectrical System/Fuses and Circuit BreakersCapacities and SpecificationsNormal Maintenance Replacement PartsMaintenance ScheduleSection 7ivScheduled MaintenancePeriodic Maintenance InspectionsRecommended Fluids and LubricantsMaintenance Records

Table of Contents (cont'd)Customer Assistance InformationSection 8Customer Satisfaction ProceduresCustomer Assistance OfficesRoadside Assistance and Courtesy TransportationWarranty Information (See Warranty Manual)Reporting Safety Defects on page 8-10Service PublicationsIndexSection 9In the Index you will find an alphabetical listing of almost every subject in this manual.You can use it to quickly find something you want to read.Please refer to the last page of this manual for your Service Station Guidev

yellowblueWe support voluntarytechnician certification.GENERAL MOTORS, GM, the GM Emblem, GMC,the GMC Emblem and the name SIERRA are registeredtrademarks of General Motors Corporation.This manual includes the latest information at the timeit was printed. We reserve the right to make changesin the product after that time without further notice.For vehicles first sold in Canada, substitute the name“General Motors of Canada Limited” for GMCwhenever it appears in this manual.Please keep this manual in your vehicle, so it will bethere if you ever need it when you’re on the road. If yousell the vehicle, please leave this manual in it so the newowner can use it.viFor Canadian Owners Who Prefer aFrench Language Manual:Aux propriétaires canadiens: Vous pouvez vousprocurer un exemplaire de ce guide en français chezvotre concessionaire ou au:DGN Marketing Services Ltd.1577 Meyerside Dr.Mississauga, Ontario L5T 1B9

yellowblueHow to Use this ManualSafety Warnings and SymbolsMany people read their owner’s manual from beginningto end when they first receive their new vehicle. If youdo this, it will help you learn about the features andcontrols for your vehicle. In this manual, you’ll findthat pictures and words work together to explainthings quickly.You will find a number of safety cautions in this book.We use a box and the word CAUTION to tell youabout things that could hurt you if you were to ignorethe warning.CAUTION:These mean there is something that could hurtyou or other people.In the caution area, we tell you what the hazard is. Thenwe tell you what to do to help avoid or reduce thehazard. Please read these cautions. If you don’t, you orothers could be hurt.vii

yellowblueYou will also find a circlewith a slash through it inthis book. This safetysymbol means “Don’t,”“Don’t do this” or “Don’tlet this happen.”In the notice area, we tell you about something that candamage your vehicle. Many times, this damage wouldnot be covered by your warranty, and it could be costly.But the notice will tell you what to do to help avoidthe damage.When you read other manuals, you might seeCAUTION and NOTICE warnings in different colors orin different words.You’ll also see warning labels on your vehicle. They usethe same words, CAUTION or NOTICE.Vehicle Damage WarningsAlso, in this book you will find these notices:NOTICE:These mean there is something that coulddamage your vehicle.viii

yellowblueVehicle SymbolsThese are some of the symbols you may find on your vehicle.For example,these symbolsare used on anoriginal battery:CAUTIONPOSSIBLEINJURYPROTECTEYES BYSHIELDINGCAUSTICBATTERYACID COULDCAUSEBURNSAVOIDSPARKS ORFLAMESSPARK ORFLAMECOULDEXPLODEBATTERYThese symbolsare importantfor you andyour passengerswhenever yourvehicle isdriven:DOOR LOCKUNLOCKThese symbolshave to do withyour WINDOWAIR BAGThese symbolsare on some ofyour G INGFANThese symbolsare used onwarning andindicator lights:Here are someother symbolsyou may TERHORNBRAKECOOLANTSPEAKERENGINE OILPRESSUREFUELANTI-LOCKBRAKESix

yellowblueModel ReferenceThis manual covers these models:Regular Cab PickupExtended Cab PickupxChassis Cab

Service Station GuideCooling SystemFora MoreDetailed Look atWhat's Under the HoodSee Section 5Tire PressureSee Section 6BatterySee Section 6Spare Tire PressureSee Section 5See Section 6Hood ReleaseAlternateFuel Door ReleaseSee Section 6See Section 6Engine Oil DipstickWindshield WasherFluidSee Section 6See Section 6Oil ViscosityEngine OilSee Section 6Remote FuelDoor ReleaseSee Section 6FuelUse unleaded gas only,87 Octane or higher.See Section 6

yellowblueSection 1 Seats and Restraint SystemsHere you’ll find information about the seats in your vehicle and how to use your safety belts properly. You can alsolearn about some things you should not do with air bags and safety belts.1-21-111-151-161-161-231-241-241-35Seats and Seat ControlsSafety Belts: They’re for EveryoneHere Are Questions Many People Ask AboutSafety Belts -- and the AnswersHow to Wear Safety Belts ProperlyDriver PositionSafety Belt Use During PregnancyRight Front Passenger PositionAir Bag SystemCenter Passenger Position1-361-401-421-461-621-651-651-65Rear Seat PassengersRear Safety Belt Comfort Guides for Childrenand Small AdultsChildrenChild RestraintsLarger ChildrenSafety Belt ExtenderChecking Your Restraint SystemsReplacing Restraint System Parts Aftera Crash1-1-1

yellowblueSeats and Seat ControlsThis section tells you about the seats -- how to adjustthem, and fold them up and down. It also tells you aboutreclining front seatbacks and head restraints.Manual Front SeatCAUTION:You can lose control of the vehicle if you try toadjust a manual driver’s seat while the vehicle ismoving. The sudden movement could startle andconfuse you, or make you push a pedal when youdon’t want to. Adjust the driver’s seat only whenthe vehicle is not moving.If your vehicle has a manual bucket or split bench seat,you can adjust it with this lever located at the front ofthe seat.Lift the lever at the front of the seat to unlock it. Usingyour body, slide the seat to where you want it. Then,release the lever and try to move the seat with your bodyin order to make sure the seat is locked into place.1-2

yellowblueCushion Tilt (If Equipped)Manual Lumbar Control (If Equipped)If your vehicle has a lumbaradjustment, you canincrease or decrease lumbarsupport in an area of thelower seatback.If your vehicle has this feature, you can raise or lowerthe front of the driver’s or passenger’s seat with thislever located at the inside edge of the seat. To raise orlower the front of the seat, move the lever up or down ina continuous motion until the cushion reaches thedesired height.To increase support, turn the knob towards the front ofthe vehicle.To decrease support, turn the knob towards the rear ofthe vehicle.1-3

yellowbluePower Seat(s) (If Equipped)Raise the front of the seat cushion by raising the forwardedge of the button. Lower the front of the seat cushionby lowering the forward edge of the button. Move theseat forward by moving the whole button toward thefront of the vehicle.Raise the rear of the seat cushion by raising the rearedge of the button. Lower the rear of the seat cushion bylowering the rear edge of the button. Move the seatrearward by moving the whole button toward the rear ofthe vehicle.Moving the whole button up or down raises or lowersthe entire seat cushion.Horizontal Control: If your vehicle has a power seat,you can adjust it with this control located at the outsideedge of the seat.1-4Vertical Control: If your vehicle has the powerreclining seats, you can use this button to adjust theangle of the seatback. Move the reclining front seatbackrearward by moving the button toward the rear of thevehicle. Move the seatback forward by moving thebutton toward the front of the vehicle. See “RecliningSeatbacks” in the Index for further information.

yellowbluePower Lumbar Control (If Equipped)Memory Seat (If Equipped)If you have power lumbaradjustment, you canincrease or decrease lumbarsupport in an area of thelower seatback.To increase support, press and hold the front of thecontrol. Let go of the control when the lower seatbackreaches the desired level of support.To decrease support, press and hold the rear of thecontrol. Let go of the control when the lower seatbackreaches the desired level of support.You can also reshape the back wing area of thelower seatback.To increase support, press and hold the top of thecontrol. Let go of the control when the lower seatbackreaches the desired level of support.To decrease support, press and hold the bottom of thecontrol. Let go of the control when the lower seatbackreaches the desired level of support.The memory functioncontrols the driver’sseat cushion andrecliner positions.It does not store the lumbar or back support positions.To set your memory seat:1. Adjust the driver’s seat to your desired position.2. Press the SET button and then press the 1 or 2 sideof the memory control within five seconds.When your vehicle is in PARK (P), press the 1 or 2button of the memory control to recall the seat setting.To do the same thing for a second driver, follow thepreceding steps, but press the other number of thememory control.1-5

yellowblueHeated Front Seats (If Equipped)Reclining SeatbacksIf your vehicle has heatedfront seats, the ignitionmust be in RUN for themto operate.The control for the driver’s side heated seat is located onthe driver’s side door panel. The control for thepassenger’s side heated seat is located on thepassenger’s side door panel.To activate the heated seats, press the button once forthe HI heat setting. Press the button again for the LOheat setting. To turn off the heated seats, press the buttona third time. An indicator light on the button willilluminate for each heat setting anytime the heated seatsare operating.1-6To adjust the front seatback, lift the lever upward.Release the lever to lock the seatback where you want it.Lift the lever again upward and the seatback will go toan upright position.If your vehicle has power seats with a power recliner,see “Power Seats” in the Index for further informationon how to operate the reclining seatback feature.

yellowblueCAUTION:But don’t have a seatback reclined if your vehicleis moving.Sitting in a reclined position when your vehicle isin motion can be dangerous. Even if you buckleup, your safety belts can’t do their job whenyou’re reclined like this.The shoulder belt can’t do its job. In a crash, youcould go into it, receiving neck or other injuries.The lap belt can’t do its job either. In a crash thebelt could go up over your abdomen. The beltforces would be there, not at your pelvic bones.This could cause serious internal injuries.For proper protection when the vehicle is inmotion, have the seatback upright. Then sitwell back in the seat and wear your safetybelt properly.1-7

yellowblueHead RestraintsSlide the head restraint up or down so that the top of therestraint is closest to the top of your ears. This positionreduces the chance of a neck injury in a crash.On some models, the head restraints tilt forward andrearward also.The seatbacks fold forward to let you access the rear ofthe cab.To fold a front seatbackforward, pull this leverforward and fold theseatback forward.To tilt the head restraints forward, grasp the top of therestraint and move it forward to where you want it to gountil you hear a click. It will then be locked into thatposition until you need to move it again. Pulling itforward past the last position will allow the restraint toreturn to its upright position.Seatback LatchesCAUTION:If the seatback isn’t locked, it could moveforward in a sudden stop or crash. That couldcause injury to the person sitting there. Alwayspress rearward on the seatback to be sure itis locked.1-8To return the seatback to the upright position, just pushthe seatback rearward until it latches. After returning theseatback to its upright position, pull the seatbackforward to make sure it is locked.

yellowblueEasy Entry Seat (Extended Cab Only)(If Equipped)CAUTION:If any easy entry seat isn’t locked, it can move.In a sudden stop or crash, the person sitting therecould be injured. And, even if there is no crash orsudden stop, a driver sitting in an unlocked easyentry seat could be startled by the suddenmovement and hit the wrong control or pedal,causing an accident. After you’ve used it, be sureto push rearward on any easy entry seat to besure

ii Table of Contents Keys and Door Locks Keyless Entry System (If Equipped) Tailgate Automatic Transmission Manual Transmission Operation Four-Wheel Drive Operation (If Equipped)