2004 GMC Envoy/Envoy XL Owner ManualSeats and Restraint Systems . 1-1Front Seats . 1-2Rear Seats. 1-5Safety Belts. 1-8Child Restraints. 1-29Air Bag Systems. 1-51Restraint System Check. 1-61Features and Controls . 2-1Keys. 2-3Doors and Locks. 2-8Windows . 2-15Theft-Deterrent Systems . 2-17Starting and Operating Your Vehicle. 2-19Mirrors . 2-36OnStar System. 2-40HomeLink Transmitter. 2-41Storage Areas. 2-45Sunroof. 2-52Vehicle Personalization. 2-52Instrument Panel . 3-1Instrument Panel Overview . 3-4Climate Controls. 3-20Warning Lights, Gages and Indicators. 3-32Driver Information Center (DIC). 3-50Audio System(s) . 3-63MDriving Your Vehicle . 4-1Your Driving, the Road, and Your Vehicle. 4-2Towing. 4-43Service and Appearance Care . 5-1Service . 5-3Fuel . 5-4Checking Things Under the Hood. 5-10Rear Axle. 5-49Four-Wheel Drive. 5-50Front Axle. 5-51Bulb Replacement. 5-52Windshield Wiper Blade Replacement. 5-54Tires. 5-57Appearance Care. 5-91Vehicle Identification. 5-99Electrical System. 5-100Capacities and Specifications. 5-115Maintenance Schedule . 6-1Maintenance Schedule . 6-2Customer Assistance and Information . 7-1Customer Assistance and Information. 7-2Reporting Safety Defects . 7-11Index .1

Canadian OwnersYou can obtain a French copy of this manual from yourdealer or from:Helm, IncorporatedP.O. Box 07130Detroit, MI 48207GENERAL MOTORS, GM, the GM Emblem, GMC, theGMC Truck Emblem and the name ENVOY/ENVOYXL are registered trademarks of General MotorsCorporation.This manual includes the latest information at the time itwas printed. We reserve the right to make changesafter that time without further notice. For vehicles firstsold in Canada, substitute the name “General Motors ofCanada Limited” for GMC whenever it appears in thismanual.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 thenew owner can use it.Litho in U.S.A.Part No. X 2438 A First EditioniiHow to Use This ManualMany people read their owner’s manual from beginningto end when they first receive their new vehicle. Ifyou do this, it will help you learn about the features andcontrols for your vehicle. In this manual, you will findthat pictures and words work together to explain things.IndexA good place to look for what you need is the Index inback of the manual. It is an alphabetical list of whatis in the manual, and the page number where you willfind it. Copyright General Motors Corporation 06/16/03All Rights Reserved

Safety Warnings and SymbolsYou will find a number of safety cautions in this book.We use a box and the word CAUTION to tell you aboutthings that could hurt you if you were to ignore thewarning.You will also find a circlewith a slash through it inthis book. This safetysymbol means “Don’t,”“Don’t do this” or “Don’t letthis happen.”{CAUTION:These mean there is something that could hurtyou or other people.In the caution area, we tell you what the hazard is.Then we tell you what to do to help avoid or reduce thehazard. Please read these cautions. If you don’t, youor others could be hurt.iii

Vehicle Damage WarningsVehicle SymbolsAlso, in this book you will find these notices:Your vehicle has components and labels that usesymbols instead of text. Symbols, used on your vehicle,are shown along with the text describing the operationor information relating to a specific component, control,message, gage or indicator.Notice: These mean there is something that coulddamage your vehicle.A notice will tell you about something that can damageyour vehicle. Many times, this damage would not becovered by your warranty, and it could be costly.But the notice will tell you what to do to help avoid thedamage.When you read other manuals, you might seeCAUTION and NOTICE warnings in differentcolors or in different words.You’ll also see warning labels on your vehicle. They usethe same words, CAUTION or NOTICE.ivIf you need help figuring out a specific name of acomponent, gage or indicator, reference the followingtopics: Seats and Restraint Systems in Section 1Features and Controls in Section 2Instrument Panel Overview in Section 3Climate Controls in Section 3Warning Lights, Gages and Indicators in Section 3Audio System(s) in Section 3Engine Compartment Overview in Section 5

These are some examples of symbols you may find on your vehicle:v


Section 1Seats and Restraint SystemsFront Seats .1-2Power Seats .1-2Power Lumbar .1-2Heated Seats .1-3Power Reclining Seatbacks .1-4Head Restraints .1-5Rear Seats .1-5Rear Seat Operation .1-5Safety Belts .1-8Safety Belts: They Are for Everyone .1-8Questions and Answers About Safety Belts .1-13How to Wear Safety Belts Properly .1-14Driver Position .1-14Safety Belt Use During Pregnancy .1-20Right Front Passenger Position .1-21Rear Seat Passengers .1-22Rear Safety Belt Comfort Guides forChildren and Small Adults .1-25Safety Belt Extender .1-28Child Restraints .1-29Older Children .1-29Infants and Young Children .1-31Child Restraint Systems .1-35Where to Put the Restraint .1-39Top Strap .1-39Top Strap Anchor Location .1-41Lower Anchorages and Top Tethers forChildren (LATCH System) .1-42Securing a Child Restraint Designed forthe LATCH System .1-44Securing a Child Restraint in aRear Outside Seat Position .1-44Securing a Child Restraint in theCenter Seat Position .1-48Securing a Child Restraint in theRight Front Seat Position .1-48Air Bag Systems .1-51Where Are the Air Bags? .1-55When Should an Air Bag Inflate? .1-57What Makes an Air Bag Inflate? .1-58How Does an Air Bag Restrain? .1-58What Will You See After an Air Bag Inflates? .1-59Servicing Your Air Bag-Equipped Vehicle .1-61Restraint System Check .1-61Checking Your Restraint Systems .1-61Replacing Restraint System PartsAfter a Crash .1-621-1

Front Seats Lift up or push down on the center of the seatPower Seats To move the seat forward or rearward, slide thecontrol to move the entire seat up or control forward or rearward.Your vehicle may have thisfeature. The power seatcontrols are located on theoutboard side of thefront seat cushions. Thehorizontal control adjuststhe seat cushion andthe vertical control adjuststhe seatback. To recline the seatback, press the vertical controlrearward. To raise the seatback, press the verticalcontrol forward.Power LumbarYour vehicle may have this feature. The seatbacklumbar support can be adjusted by moving a controllocated on the outboard side of the seat cushions.To increase or decrease support, hold the controlforward or rearward. Keep in mind that as your seatingposition changes, as it may during long trips, soshould the position of your lumbar support. Adjust theseat as needed. Move the front of the horizontal seat control up ordown to adjust the front portion of the cushion. Move the rear of the seat control up or down toadjust the rear portion of the cushion.1-2

Heated SeatsYour vehicle may haveheated front seats. Thebuttons used to control thisfeature are located onthe front door armrests.The engine must berunning for the heated seatfeature to work.To heat only the seatback, press the button with thewords BACK ONLY. An indicator light on the switch willglow to designate that only the seatback is beingheated. Additional presses will cycle through the heatlevels for the seatback only. Press the horizontal buttonagain to heat the whole seat.The feature will shut off automatically when the ignitionis turned off.To heat the entire seat, press the horizontal button withthe heated seat symbol. Press the button repeatedlyto cycle through the temperature settings of high,medium, low and off. The indicator lights will glow todesignate the level of heat selected: three for high, twofor medium and one for low. The low setting warmsthe seatback and cushion until the seat temperature isnear body temperature. The medium and highsettings heat the seatback and seat cushion to a slightlyhigher temperature. You will be able to feel heat inabout two minutes.1-3

Power Reclining SeatbacksYour vehicle may have this feature. The vertical powerseat control described earlier allows the seatback torecline. See Power Seats on page 1-2 for moreinformation.{CAUTION:Sitting in a reclined position when your vehicleis in motion can be dangerous. Even if youbuckle up, your safety belts can’t do their jobwhen you’re reclined like this.The shoulder belt can’t do its job. In a crash,you could go into it, receiving neck or otherinjuries.The lap belt can’t do its job either. In a crashthe belt could go up over your abdomen. Thebelt forces would be there, not at your pelvicbones. This could cause serious internalinjuries.For proper protection when the vehicle is inmotion, have the seatback upright. Then sitwell back in the seat and wear your safety beltproperly.But don’t have a seatback reclined if your vehicle ismoving.1-4

Head RestraintsRear SeatsRear Seat OperationYour vehicle may have a folding rear seat which letsyou fold the seatbacks down for more cargo space.Adjust your head restraint so that the top of the restraintis closest to the top of your head. This positionreduces the chance of a neck injury in a crash.The head restraints lock into place when raised.To release the head restraint and lower it, pressthe tab located on the top of the seatback.Pull up on the loop located where the seat cushionmeets the seatback to fold the seat cushion up and outof the way. This will allow the seatback to fold flatand increase the cargo area.1-5

The rear seatback leversare located on theoutboard side of the rearseatbacks.Pull the seatback toward you as you lift up on the lever.The head restraint will automatically fold out of theway when the seatback is folded down.To raise the seatbacks, lift up the seatbacks and pushon them until they lock into the upright position.Push and pull on the seatbacks to make sure that theyare latched securely. Then fold the bottom seatcushion back into place.1-6To return the head restraint to the upright position,reach behind the seat and pull the restraint up until itlocks into place. Push and pull on the head restraint tomake sure that it is latched securely.

Rear Seats (Envoy XL)Returning the Seats to an Upright PositionThe second row seat is a 65/35 split seat which may befolded and tumbled. Use this feature for gainingaccess to the third row seats.To return the seat(s) to the upright position, do thefollowing:To fold and tumble the second row seat(s), do thefollowing:1. Push the head restraints fully down.2. Fold the seatback flat on the seat by pulling up onthe front part of the lever. The lever is located onthe outboard side of the seat (indicated as 1 on thehandle side cover).1. Return the seat to the floor pins by rotating the seatdown to reengage the seat hooks.2. Try to raise the seat to check that it is locked down.3. Pull the seat back up to return it to the uprightposition.Entry/Exit to/from the Third Row SeatTo enter the third row seat, you must fold and tumblethe second row seat following the instructions

Rear Seats (Envoy XL) The second row seat is a 65/35 split seat which may be folded and tumbled. Use this feature for gaining access to the third row seats. To fold