2002 GMC Sierra Owners Manual

not work at speeds below about 25 mph (40 km/h). If you apply your brakes, or press the clutch pedal (if equipped), the cruise control will disengage.

CAUTION:

D Cruise control can be dangerous where you

can’t drive safely at a steady speed. So, don’t use your cruise control on winding roads or in heavy traffic.

D Cruise control can be dangerous on

slippery roads. On such roads, fast changes in tire traction can cause needless wheel spinning, and you could lose control. Don’t use cruise control on slippery roads.

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Setting Cruise Control

CAUTION:

If you leave your cruise control switch on when you’re not using cruise, you might hit a button and go into cruise when you don’t want to. You could be startled and even lose control. Keep the cruise control switch off until you want to use cruise control.

1. Move the cruise control switch to ON. 2. Get up to the speed you want. 3. Press in the SET button at the end of the lever and

release it.

4. Take your foot off the accelerator pedal.

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United States

Canada

The CRUISE light on the instrument panel will illuminate when the cruise control is engaged.

Resuming a Set Speed Suppose you set your cruise control at a desired speed and then you apply the brake or press the clutch pedal (if equipped). This, of course, disengages the cruise control. But you don’t need to reset it. Once you’re going about 25 mph (40 km/h) or more, you can move the cruise control switch from ON to R/A (Resume/Accelerate) briefly. You’ll go right back up to your chosen speed and stay there. If you hold the switch at R/A briefly, the vehicle will keep going faster until you release the switch or apply the brake. So unless you want to go faster, don’t hold the switch at R/A.

Increasing Speed While Using Cruise Control There are two ways to go to a higher speed: D Use the accelerator pedal to get to the higher speed.

Press the SET button at the end of the lever, then release the button and the accelerator pedal. You’ll now cruise at the higher speed.

D Move the cruise switch from ON to R/A. Hold it there until you get up to the speed you want, and then release the switch. To increase your speed in very small amounts, move the switch to R/A briefly. Each time you do this, your vehicle will go about 1 mph (1.6 km/h) faster.

Reducing Speed While Using Cruise Control D Press and hold the SET button at the end of the

lever until you reach the lower speed you want, then release it.

D To slow down in very small amounts, press the SET button briefly. Each time you do this, you’ll go about 1 mph (1.6 km/h) slower.

Passing Another Vehicle While Using Cruise Control Use the accelerator pedal to increase your speed. When you take your foot off the pedal, your vehicle will slow down to the cruise control speed you set earlier.

Using Cruise Control on Hills How well your cruise control will work on hills depends upon your speed, load and the steepness of the hills. When going up steep hills, you may want to step on the accelerator pedal to maintain your speed. When going downhill, you may have to brake or shift to a lower gear to keep your speed down. Of course, applying the brake takes you out of cruise control. Many drivers find this to be too much trouble and don’t use cruise control on steep hills.

Ending Cruise Control There are three ways to turn off the cruise control: D Step lightly on the brake pedal. D Step lightly on the clutch pedal (if equipped). D Move the cruise control switch to OFF.

Erasing Speed Memory When you turn off the cruise control or the ignition, your cruise control set speed memory is erased.

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Exterior Lamps

The control on the driver’s side of your instrument panel operates the exterior lamps. Turn the control clockwise to operate the lamps.

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The exterior lamp switch has three positions:

(OFF): Turning the switch to this position turns off all lamps, except the Daytime Running Lamps (DRL). It also puts the system into automatic headlamp mode.

(Parking Lamps): Turning the control to this position turns on the parking lamps, together with the following: D Sidemarker Lamps D Taillamps D License Plate Lamps D Instrument Panel Lights D Roof Marker Lamps (If Equipped)

(Headlamps): Turning the switch to this position turns on the headlamps, together with the previously listed lamps and lights. You can switch your headlamps from high to low-beam by pulling on the turn signal/high-beam lever. A circuit breaker protects your headlamps. If you have an electrical overload, your headlamps will flicker on and off. Have your headlamp wiring checked right away if this happens.

Automatic Headlamp System When it is dark enough outside, your automatic headlamp system will turn on your headlamps at the normal brightness along with other lamps such as the taillamps, sidemarker, parking lamps and the instrument panel lights. The radio lights will also be dim. Your vehicle is equipped with a light sensor located on the top of the instrument panel in the defroster grille. Be sure it is not covered, or the system will be on whenever the ignition is on. The system may also turn on your headlamps when driving through a parking garage, heavy overcast weather or a tunnel. This is normal. There is a delay in the transition between the daytime and nighttime operation of the Daytime Running Lamps (DRL) and the automatic headlamp systems so that driving under bridges or bright overhead street lights does not affect the system. The DRL and automatic headlamp system will only be affected when the light sensor sees a change in lighting lasting longer than the delay.

To idle your vehicle with the automatic headlamp system off, set the parking brake while the ignition is off. Then start your vehicle. The automatic headlamp system will stay off until you release the parking brake. You may be able to turn off your automatic headlamp system. See “Daytime Running Lamps (DRL)” later in this section for more information. As with any vehicle, you should turn on the regular headlamp system when you need them. Lamps On Reminder A reminder chime will sound when your headlamps or parking lamps are manually turned on and your ignition is in OFF, LOCK or ACCESSORY. To disable the chime, turn the thumbwheel all the way down. In the automatic mode, the headlamps turn off once the ignition key is in OFF.

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Daytime Running Lamps Daytime Running Lamps (DRL) can make it easier for others to see the front of your vehicle during the day. DRL can be helpful in many different driving conditions, but they can be especially helpful in the short periods after dawn and before sunset. Fully functional daytime running lamps are required on all vehicles first sold in Canada. The DRL system will come on when the following conditions are met: D the ignition is on, D the exterior lamps control is in automatic

headlamp mode,

D the automatic transmission is not in PARK (P), D the light sensor determines it is daytime and D the parking brake is released.

When the DRL are on, only your DRL lamps will be on. The taillamps, sidemarker and other lamps won’t be on. The instrument panel won’t be lit up either. When it begins to get dark, the automatic headlamp system will switch from DRL to the headlamps or the last chosen headlamp setting that was used. When you turn the headlamp switch off, the headlamps will go off, and your DRL lamps will illuminate, provided it is not dark outside. To idle an automatic transmission equipped vehicle with the DRL off, set the parking brake. Shifting the transmission into PARK (P) will also allow you to idle the vehicle with the DRL off. The DRL will stay off until you release the parking brake or shift the transmission out of PARK (P). To idle a manual transmission equipped vehicle with the DRL off, set the parking brake. The DRL will stay off until you release the parking brake. The following procedure applies only to vehicles first sold in the United States.

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When necessary, you may turn off the Automatic Headlamp System and the Daytime Running Lamps (DRL) feature by following these steps: 1. Turn the ignition to RUN. 2. Press the DOME OVERRIDE button four times within six seconds. After the fourth press of the button, a chime will sound informing you the system is off. The system will revert back to the automatic mode when the ignition is turned off and on again. 3. To return to the automatic mode, push the DOME OVERRIDE button four times within six seconds (the chime will sound), or turn the ignition off and on again.

As with any vehicle, you should turn on the regular headlamp system when you need it.

Fog Lamps (If Equipped) If your vehicle has fog lamps, use them for better vision in foggy or misty conditions.

The fog lamp button is located on the left side of your instrument panel.

Your parking lamps and/or low-beam headlamps must be on for your fog lamps to work.

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Press the button to turn the fog lamps on. Press the button again to turn them off. An indicator light will glow in the button when the fog lamps are on. Remember, fog lamps alone will not give off as much light as your headlamps. Never use the fog lamps in the dark without turning on the headlamps. The fog lamps will go off whenever the high-beam headlamps come on. When the high beams go off, the fog lamps will come on again. The fog lamps will be cancelled after the ignition is turned off. If you still want to use the fog lamps after you restart the vehicle, you will need to press the fog lamp button again.

Auxiliary Roof Mounted Lamp Switch (If Equipped) If your vehicle has this feature, this switch includes wiring provisions for a dealer or a qualified service center to install an auxiliary roof lamp.

This switch is located on the center of the instrument panel near the comfort controls.

When the switch wiring is connected to an auxiliary roof mounted lamp, pressing the switch will activate the lamp and illuminate an indicator light near the switch. Pressing the switch again will turn off the roof mounted lamp. If your vehicle has this switch, your vehicle may have the snow plow prep package. For further information see “Snow Plow Prep Package” in the Index.

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Cargo Lamp

The cargo lamp button is located on the left side of the instrument panel.

Press the button to turn the cargo lamp on. Press the button again to turn it off.

A message in the instrument panel cluster will come on and display CARGO LAMP ON when the cargo lamp is turned on and the ignition key is turned to RUN.

Interior Lamps Instrument Panel Brightness Control This feature controls the brightness of the instrument panel lights. The thumbwheel for this feature is located next to the headlamp control. Turn the thumbwheel up to adjust the instrument panel lights. Turn the thumbwheel up to return the radio display to full brightness when the headlamps or parking lamps are on. To turn on the dome lamps, turn the thumbwheel all the way up. Exit Lighting With exit lighting, the interior lamps will come on when you remove the key from the ignition. The lights will not come on if the DOME OVERRIDE button is pressed in.

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Illuminated Entry Your vehicle is equipped with an illuminated entry feature. When a door is opened, the dome lamps will come on if the DOME OVERRIDE button is in the out position. If the DOME OVERRIDE button is pressed in, the lamps will not come on. Front Reading Lamps (If Equipped)

The reading lamps are located on the overhead console.

To turn on the reading lamps, press the button located next to each lamp. To turn them off, press the button again. The lamps can be adjusted to point in the direction you want them to go.

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Dome Lamps The dome lamps will come on when you open a door. You can also turn the dome lamps on by turning the thumbwheel, located next to the exterior lamps control, all the way up. In this position, the dome lamps will remain on whether the doors are opened or closed. You can use the DOME OVERRIDE button, located below the exterior lamps control, to set the dome lamps to come on automatically when the doors are opened, or remain off. To turn the lamps off, press the button into the in position. With the button in this position, the dome lamps will remain off when the doors are open. To return the lamps to automatic operation, press the button again and return it to the out position. With the button in this position, the dome lamps will come on when you open a door. Battery Run-Down Protection This feature shuts off the dome, reading, glove box, cargo and underhood lamps if they are left on for more than 20 minutes when the ignition is off. This will keep your battery from running down.

Mirrors Inside Day/Night Rearview Mirror

Electrochromic Inside Rearview Mirror with Compass and Temperature Display (If Equipped) When on, an electrochromic mirror automatically dims to the proper level to minimize glare from lights behind you after dark.

Pull the tab under the mirror toward you to reduce glare from headlamps behind you after dark. Push the tab away from you for normal daytime operation.

The mirror also includes a display in the upper right corner of the mirror face. The compass reading and the outside temperature will both appear in the display at the same time. The dual display can be turned on or off by briefly pressing either the TEMP or the COMP button.

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Temperature Display The temperature can be displayed by pressing the TEMP button. Pressing the TEMP button once briefly, will toggle the temperature reading on and off. To alternate the temperature reading between Fahrenheit and Celsius, press and hold the TEMP button for three seconds until the display blinks_F and_C. Press and release the TEMP button to toggle between the Fahrenheit and Celsius readings. After five seconds of inactivity, the display will stop blinking and display the last selection made. Press and release the TEMP button to toggle the temperature display between Fahrenheit or Celsius. If an abnormal reading is displayed, please consult your dealer.

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Electrochromic Mirror Operation The time period you need to press and hold the TEMP button to turn the electrochromic feature on or off is six seconds. The indicator light to the right of the TEMP button will still turn on or off to show you when the electrochromic feature is activated. Once the mirror is turned off, it will remain off until it is turned back on, or until the vehicle is restarted.

Compass Operation Press the COMP button once briefly to turn the compass on or off. When the ignition and the compass feature are on, the compass will show two character boxes for approximately two seconds. After two seconds, the mirror will display the compass heading. When cleaning the mirror, use a paper towel or similar material dampened with glass cleaner. Do not spray glass cleaner directly on the mirror as that may cause the liquid cleaner to enter the mirror housing.

Compass Calibration The compass may need calibration if one of the following occurs: D After five seconds, the display does not show a

compass heading (N for North, for example), there may be a strong magnetic field interfering with the compass. Such interference may be caused by a magnetic antenna mount, magnetic note pad holder or a similar magnetic item.

D The compass does not display the correct heading

and the compass zone variance is set correctly. In order to calibrate, CAL must be displayed in the mirror compass windows. If CAL is not displayed, push in the COMP button for approximately eight seconds or until CAL is displayed. The compass can be calibrated in one of two ways: D Drive the vehicle in circles at five mph (8 km/h) or

less until the display reads a direction, or

D drive the vehicle on your everyday routine and after several turns the compass will become calibrated and will display a direction.

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Compass Variance The mirror is set in zone eight upon leaving the factory. It will be necessary to adjust the compass to compensate for compass variance if you live outside zone eight. Under certain circumstances, as during a long distance cross-country trip, it will be necessary to adjust for compass variance. Compass variance is the difference between earth’s magnetic north and true geographic north. If not adjusted to account for compass variance, your compass could give false readings. To adjust for compass variance: 1. Use the COMP button located at the bottom of

the mirror.

2. Press and hold the COMP button for three seconds

until a zone number appears in the display.

3. Find your current location and variance zone number

on the following zone map.

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4. Press the COMP button on the bottom of the mirror

until the new zone number appears in the display. After you stop pressing the button in, the display will show a compass direction within a few seconds.

Electrochromic Inside Rearview Mirror with Compass, Temperature Display and OnStar Controls (If Equipped) When on, an electrochromic mirror automatically dims to the proper level to minimize glare from lights behind you after dark.

The mirror also includes a duel display in the upper right corner of the mirror face. The compass reading and the outside temperature will both appear in the display at the same time.

Temperature and Compass Display Press the on/off button, located to the far left, briefly to turn the comp/temp display on or off. If the display reads CAL, you will need to calibrate the compass. For more information on calibration, see below. To adjust between Fahrenheit and Celsius do the following: 1. Press and hold the on/off button for four seconds

until either a flashing _F, or _C appears.

2. Press the button again to change the display to the desired unit of measurement. After approximately four seconds of inactivity, the new unit will be locked in and the compass/temperature display will return.

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Electrochromic Mirror Operation The electrochromic (self dimming) mirror function is turned on automatically each time the ignition is started. To operate the electrochromic mirror do the following: 1. Make sure the green indicator light, located to the left of the on/off button, is lit. If it’s not, press and hold the on/off button for six seconds until the green light comes on, indicating that the mirror is in electrochromic (self dimming) mode.

2. Turn off the electrochromic mirror function by

pressing and holding the on/off button for six seconds until the green indicator light turns off.

Compass Variance The mirror is set in zone eight upon leaving the factory. It will be necessary to adjust the compass to compensate for compass variance if you live outside of zone eight. Under certain circumstances, as during a long distance cross-country trip, it will be necessary to adjust for compass variance. Compass variance is the difference between earth’s magnetic north and true geographic north. If not adjusted to account for compass variance, your compass could give false readings. To adjust for compass variance do the following: 1. Find your current location and variance zone number

on the following zone map.

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2. Press and hold the on/off button for nine seconds or until a Z and a zone number appears in the display. The compass is now in zone mode.

3. Keep pressing the on/off button until the desired zone number appears in the display. Release the button. After about four seconds of inactivity, the new zone number will be locked in and the comp/temp display will return.

4. Calibrate the compass as described below.

Compass Calibration The compass may need calibration if one of the following occurs: D After five seconds, the display does not show a

compass heading (N for North, for example), there may be a strong magnetic field interfering with the compass. Such interference may be caused by a magnetic antenna mount, magnetic note pad holder or a similar magnetic item.

D The compass does not display the correct heading

and the compass zone variance is set correctly. In order to calibrate, CAL must be displayed in the mirror compass windows. If CAL is not displayed, push the on/off button for approximately 12 seconds or until CAL is displayed. The compass can be calibrated in one of two ways: D Drive the vehicle in circles at 5 mph (8 km/h) or less

until the display reads a direction, or

D drive the vehicle on your everyday routine and after several turns the compass will become calibrated and will display a direction.

Cleaning the Mirror When cleaning the mirror, use a paper towel or similar material dampened with glass cleaner. Do not spray glass cleaner directly on the mirror as that may cause the liquid cleaner to enter the mirror housing. Outside Manual Adjust Mirrors Adjust your outside mirrors so you can just see the side of your vehicle and have a clear view of objects behind you. Some mirrors can be folded in, to enter narrow doorways. The use of hood-mounted air deflectors and add-on convex mirror attachments may adversely affect mirror performance.

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Camper-Type Outside Mirrors (If Equipped)

If your vehicle is equipped with camper-type mirrors, they can be adjusted so you can have a clear view of objects behind you. Pull out the mirror head to extend it for better visibility when towing a trailer.

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West Coast-Type Outside Mirrors (If Equipped) If your vehicle is equipped with the west coast-type mirrors, they can be adjusted so you can have a clear view of objects behind you.

A. Outer Mirror Frame B. Mirror Head C. Nut

The mirrors can be adjusted by turning the mirror head (B) and moving the outer mirror frame (A) backward or forward. You can also loosen the nut (C) on the top and bottom of the outer mirror frame to tilt the mirror head.

Electric Outside Rearview Mirrors (If Equipped)

The control for this feature is located on the driver’s door armrest.

Move the selector switch located above the control pad to the left or right to choose the mirror you want to adjust, then press the arrows located on the control pad to move the mirror in the direction you want it to go.

Convex Outside Mirror Your passenger’s side mirror may be convex. A convex mirror’s surface is curved so you can see more from the driver’s seat.

CAUTION:

A convex mirror can make things (like other vehicles) look farther away than they really are. If you cut too sharply into the right lane, you could hit a vehicle on your right. Check your inside mirror or glance over your shoulder before changing lanes.

Heated Outside Rearview Mirrors (If Equipped) The outside rearview mirrors with this feature have a defrost mode. To turn on the defrost feature, press the rear window defogger button. See “Rear Window Defogger” in the Index for further information.

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Storage Compartments Your vehicle includes a number of storage compartments for storage of often-used items. Some vehicles have storage areas in the instrument panel. Use these spaces for items such as gloves or small books. Some models have a storage pocket on each of the front doors. Some vehicles have a storage area behind the seat. Glove Box To open your glove box, pull the lever upward and pull the door downward. Center Overhead Console (If Equipped) Your vehicle may have an overhead console. The long overhead console has three storage compartments inside it and the short overhead console has one compartment inside it.

Installing a Garage Door Opener If you have the long overhead console, a garage door opener can be installed in the front overhead compartment. 1. To install the garage door opener, first open

the compartment door by pressing the release button forward.

2. Peel the protective

backing from the hook and loop patch. Press it firmly to the back of your garage door opener, as close to the center of the opener as possible.

3. Center the garage door opener activation button over the console door button, and press the opener firmly into place.

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The pegs inside the compartment door are used to make sure the button on the compartment door will contact the control button on the garage door opener.

4. Add one peg at a time

until, with the compartment door closed, the PUSH button on the compartment door will operate the garage door opener.

5. Now, with the

compartment door closed, press the button marked PUSH again to make sure the garage door opener operates properly.

With the garage door opener positioned properly and the right number of pegs in place, you should only have to press the PUSH button slightly to operate the opener.

6. Adjust the position of the garage door opener and

add or remove pegs, as needed, until the opener operates properly.

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Armrest Storage Compartment (If Equipped) Your vehicle may have a center armrest storage compartment in the front bench seat. To open it, fold down the armrest and press the latch handle located at the front of the armrest. Then, let the lid pop up and swing open. The storage compartment has a cassette/compact disc holder. The holder will store up to six compact disc cases and five cassette tape cases or a total of 11 cassette tape cases. If not used to store cassette or compact disc cases, the storage area can be used to store a laptop computer. To use the writing table, pull the latch at the rear of the table and swing the writing table forward. Use it to hold a pad of paper and a pen.

Sunglasses Storage Compartment If you have the long overhead console, the center overhead compartment can be used to store your sunglasses.

To open the center compartment, press the release button located at the rear of the compartment door. Place your sunglasses in the compartment door with the lenses facing out. To open the rear compartment, press the release button located at the rear of the compartment door. The rear compartment can be used to store a small item, like a book. 2-84

Center Console Storage Area (If Equipped) Your vehicle may have a console compartment between the bucket seats.

To open it, insert the console key into the lock and unlock the console. Press the button and swing the console lid open. The console has a place to store tissues, pens and a clip to hold business cards. Your console may have a cupholder that swings down for the rear seat passengers to use. The front cupholder pulls out and swivels 180_ to provide clearance between tall beverage containers and the manual transmission shift lever (if equipped). Your vehicle may have a compact disc holder in the console. Cupholders (If Equipped) Your vehicle may have cupholders located in the front console.

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Tonneau Cover (If Equipped)

1. To remove, unsnap the cover. Roll up and stow using the buckle and the strap located at the front of the box.

A. Back rail B. Side rail C. Rear bow

D. Center bow E. Front bow F. Front rail

1. Remove the tonneau cover from the notch in the

front rail from the driver’s side of the vehicle.

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3. To add cargo to the

box, remove all bows and the back rail and stow them safely.

2. Remove the three bows by gently pushing them

against the spring-loaded end. The three bows are labeled front/center/rear to remind you in which order to reinstall them.

To clean the tonneau cover, use mild soap and water. If necessary, use a soft bristle brush to remove dirt trapped in the grain of the material.

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To use the cigarette lighter, push it in all the way, and let go. When it’s ready, it will pop back out by itself.

NOTICE:

Holding a cigarette lighter in with your hand while it’s heating can make it overload, damaging the lighter and the heating element. Just push the lighter all the way in and let go. When it’s done, it will pop back by itself.

Sun Visors To block out glare, you can swing down the visors. You can also swing them out to help block glare at the front and side windows. The passenger’s side sun visor may have a vanity mirror.

Ashtrays and Cigarette Lighter Front Ashtray The front ashtray is located near the center of the instrument panel. Pull on the bottom of the ashtray door to open it.

NOTICE:

If you store paper or other things that burn in your ashtrays, they could be set on fire by cigarettes or other smoking materials. That could cause a fire and possibly damage your vehicle. Do not store papers and other things that burn in your ashtrays.

To remove the front ashtray, press the retainer spring and pull the ashtray toward you. To replace the ashtray, place the ashtray on the slides at the side of its location in the instrument panel. Then slide the ashtray back to its original position.

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Accessory Power Outlets With accessory power outlets you can plug in auxiliary electrical equipment such as a cellular telephone or CB radio. Two accessory power outlets are located near the cigarette lighter. The cigarette lighter is designed to fit only in the receptacle to the right of the accessory power outlets. To use the outlets, lift the cover. When not using them, always close the cover. Certain power accessory plugs may not be compatible to the accessory power outlets and could result in blown vehicle or adapter fuses. If you experience a problem, see your dealer for additional information on the accessory power plugs.

NOTICE:

Adding some electrical equipment to your vehicle can damage it or keep other things from working as they should. This wouldn’t be covered by your warranty. Check with your dealer before adding electrical equipment, and never use anything that exceeds the fuse rating.

When adding electrical equipment, be sure to follow the proper installation instructions included with the equipment.

NOTICE:

Power outlets are designed for accessory plugs only. Do not hang any type of accessory or accessory bracket from the plug. Improper use of the power outlet can cause damage not covered by your warranty.

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OnStarR System (If Equipped) OnStar is a vehicle communications system that offers a variety of services and provides a one-touch hands-free communication link between you and the OnStar Center. To receive OnStar services, a service subscription agreement is required and an additional fee may be required. Services are available 24 hours a day, 7 days a week. For more information, call 1-888-ONSTAR-7
(1-888-667-8277).

OnStar Services Button: Press this button once to

contact an advisor who will be able to assist you with these services. If you are not quickly connected, the system will automatically reset and redial. This ensures connection to the center; there is no additional action required. Press the Communication button to cancel the automatic redial.

Emergency Button: In an emergency situation,

press the emergency service button. Upon receiving the call, an advisor at the center will locate your vehicle and assess the situation. If necessary, the advisor will alert the nearest emergency service provider.

Communication Button: Press this button at the end of a call. Also press this button to answer a call from the center, or cancel a call if one of the other buttons is accidentally pressed. This button is also used to access OnStar Personal Calling and Virtual Advisor services. See the OnStar owner package for more information.

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Volume Control: You can control the volume of the OnStar System using either the volume knob on the radio or if equipped, the steering wheel volume controls.

Telltale Light: This light will indicate the status of the system. A solid green light will come on when you start the vehicle to let you know that the system is on and is ready to make or receive calls. If the light blinks green it means that an incoming or outgoing call is in progress. Press the Communication button if you notice the light blinking and you are not on a call. The light will be red in the event of an OnStar system malfunction. If this occurs press the OnStar button to attempt to contact an advisor. If the connection is made, the advisor will assist you with steps to take to make sure that the system is functioning properly. If you cannot contact the advisor, take your vehicle to your dealership as soon as possible for assistance. Cellular Antenna: The cellular antenna on the outside of your vehicle is critical to effective communications using the OnStar system. Optimum cellular reception can be obtained when the mast is straight up and down.

OnStar Services The following services are available within OnStar service plans. Your vehicle comes with a specific one-year service plan that allows use of some or all of the following services. D Automatic Notification of Air Bag

Deployment: If an air bag deploys, a priority emergency signal is sent automatically to the center. An advisor will locate your vehicle’s position, try to contact you and assist you in the situation. If the center is unable to contact you, an emergency service provider will be contacted.

D Stolen Vehicle Tracking: Call the center at

1-888-4-ONSTAR (1-888-466-7827) to report your vehicle stolen. The system can then attempt to locate and track your vehicle and the advisor will assist the proper authorities.

D Roadside Assistance with Location: For vehicle breakdowns, press the OnStar Services button. An advisor will contact the appropriate help.

D Remote Diagnostics: If an instrument panel

light comes on, press the OnStar Services button. An advisor can perform a check of the engine on-board computer, and recommend what action needs to be taken.

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D OnStar MED-NET: Med-Net can store your

personal medical history and provide it to emergency personnel if necessary. (Requires activation and additional fee.)

D Accident Assist: An advisor can provide

step-by-step guidance following an accident.

D Remote Door Unlock: To contact the center, call

1-888-4-ONSTAR. You will be required to provide your security information. An advisor will send a command to your vehicle to unlock itself. The advisor can delay unlocking your vehicle. Remote Door Unlock is disabled 48 hours after the vehicle is parked to maintain the battery charge.

D Vehicle Locator Service: To contact the center, call 1-888-4-ONSTAR. You will be required to provide your security information. An advisor will send a command to your vehicle to sound the horn and/or flash the lamps.

D Route Support: An advisor can provide directions

or guidance to most places you want to go. In addition, they can help you locate gas stations, rest areas, ATMs, hospitals, hotels, stores, eateries and more.

D Ride Assist: An advisor can locate transportation in

the event that you are unable to drive.

D Concierge Services: The concierge advisor can

obtain tickets, reservations or help with vacation/trip planning and other unique items and services.

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OnStar System Limitations Complete limitations can be found on the Subscriber Services Agreement. In order to provide you with excellent service, calls with the OnStar Center may be monitored or recorded. OnStar Service is: D available in the 48 contiguous United States, Alaska,

Hawaii and Canada;

D available when the vehicle is within the operating

range of a cellular provider;

D subject to limitations caused by atmospheric

conditions, such as severe weather or topographical conditions, such as mountainous terrain.

D subject to cellular carrier equipment limitations.

Global positioning locating capabilities will not be available if satellite signals are obstructed. OnStar will not function if the vehicle’s battery is discharged or disconnected. It may also be inoperative if the vehicle is in an accident and the OnStar or vehicle electrical system components are damaged. OnStar is the communication link between you and existing governmental emergency and roadside service providers. OnStar will receive your call and use reasonable effort to contact an appropriate provider. OnStar cannot promise that the providers will respond in a timely manner or at all.

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The Instrument Panel - Your Information System

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The main components of your instrument panel are the following:

A. Dome Lamp Button B. Exterior Lamp Controls C. Air Outlets D. Automatic Transfer Case (If Equipped) Electronic

Transfer Case (If Equipped)/Traction Assist System (TAS) (If Equipped)

Instrument Panel Cluster

E. Multifunction Lever F. G. Gearshift Lever (Automatic Transmission) H. Tow/Haul Selector Button I. Audio System J. Comfort Control System K. Instrument Panel Fuse Block

L. Hood Release M. Center Instrument Panel Utility Block N. Tilt Wheel Lever (If Equipped) O. Parking Brake Release P. Lighter and Accessory Power Outlets Q. Rear Window Defogger Switch (If Equipped) R. Storage Area or Cassette Tape Player (If Equipped) S. Ashtray T. Manual Selectable Ride Control (If Equipped) U. 4WS Switch (If Equipped) V. Passenger Air Bag Off Switch W. Glove Box

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Instrument Panel Cluster

United States Heavy Duty Automatic Transmission version shown. Canada, Light Duty Automatic and

Manual Transmission Clusters similar.

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Your instrument cluster is designed to let you know at a glance how your vehicle is running. You’ll know how fast you’re going, about how much fuel you have and many other things you’ll need to know to drive safely and economically. Speedometer and Odometer Your speedometer lets you see your speed in both miles per hour (mph) and kilometers per hour (km/h). Your odometer shows how far your vehicle has been driven, in either miles (used in the United States) or kilometers (used in Canada).

Trip Odometer The trip odometer can tell you how far your vehicle has been driven since you last set the trip odometer to zero. Press the reset button to toggle between the trip odometer and the regular odometer. Holding the reset button for two seconds while the trip odometer is displayed will reset it. To display the odometer reading with the ignition off, press the reset button.

Engine Hour Meter Display The odometer can also display the number of hours the engine has run. To display the hour meter, turn the ignition off, press and hold the reset button for at least four seconds. The hour meter will be displayed for up to 30 seconds, or until the ignition is turned on. Tachometer Your tachometer displays the engine speed in revolutions per minute (rpm).

NOTICE:

On vehicles with a manual transmission, if you operate the engine with the tachometer in the red area, your engine or other parts could be damaged. Damage to your engine or vehicle caused by operating the engine in the red area isn’t covered by your vehicle warranty. Don’t operate the engine with the tachometer in the shaded area.

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Warning Lights, Gages and Indicators This part describes the warning lights and gages that may be on your vehicle. The pictures will help you locate them. Warning lights and gages can signal that something is wrong before it becomes serious enough to cause an expensive repair or replacement. Paying attention to your warning lights and gages could also save you or others from injury. Warning lights come on when there may be or is a problem with one of your vehicle’s functions. As you will see in the details on the next few pages, some warning lights come on briefly when you start the engine just to let you know they’re working. If you are familiar with this section, you should not be alarmed when this happens. Gages can indicate when there may be or is a problem with one of your vehicle’s functions. Often gages and warning lights work together to let you know when there’s a problem with your vehicle.

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When one of the warning lights comes on and stays on when you are driving, or when one of the gages shows there may be a problem, check the section that tells you what to do about it. Please follow this manual’s advice. Waiting to do repairs can be costly -- and even dangerous. So please get to know your warning lights and gages. They’re a big help. Your vehicle may also have a driver information system that works along with the warning lights and gages. See “Message Center” in the Index. Safety Belt Reminder Light When the key is turned to RUN or START, a chime will come on for about six seconds to remind people to fasten their safety belts, unless the driver’s safety belt is already buckled.

The safety belt light will also come on and stay on for about 20 seconds, then it will flash for about 55 seconds.

If the driver’s belt is already buckled, neither the chime nor the light will come on.

Air Bag Readiness Light There is an air bag readiness light on the instrument panel, which shows the air bag symbol. The system checks the air bag’s electrical system for malfunctions. The light tells you if there is an electrical problem. The system check includes the air bag sensors, the air bag modules, the wiring, the passenger air bag suppression circuit and the crash sensing and diagnostic module. For more information on the air bag system, see “Air Bag” in the Index.

This light will come on when you start your vehicle, and it will flash for a few seconds. Then the light should go out. This means the system is ready.

If the air bag readiness light stays on after you start the vehicle or comes on when you are driving, your air bag system may not work properly. Have your vehicle serviced right away.

CAUTION:

If the air bag readiness light stays on after you start your vehicle, it means the air bag system may not be working properly. The air bags in your vehicle may not inflate in a crash, or they could even inflate without a crash. To help avoid injury to yourself or others, have your vehicle serviced right away if the air bag readiness light stays on after you start your vehicle.

The air bag readiness light should flash for a few seconds when you turn the ignition key to RUN. If the light doesn’t come on then, have it fixed so it will be ready to warn you if there is a problem.

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Air Bag Off Light When you turn the right front passenger’s air bag off, this light will come on and stay on to remind you that the air bag has been turned off. This light will go off when you turn the air bag back on again. See “Air Bag Off Switch” in the Index for more on this, including important safety information.

CAUTION:

If the right front passenger’s air bag is turned off for a person who isn’t in a risk group identified by the national government, that person won’t have the extra protection of an air bag. In a crash, the air bag wouldn’t be able to inflate and help protect the person sitting there. Don’t turn off the passenger’s air bag unless the person sitting there is in a risk group. See “Air Bag Off Switch” in the Index for more on this, including important safety information.

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CAUTION:

If the air bag readiness light ever comes on when you have turned off the air bag, it means that something may be wrong with the air bag system. The right front passenger’s air bag could inflate even though the switch is off. If your vehicle is a regular cab pickup and this ever happens, don’t let anyone whom the national government has identified as a member of a passenger air bag risk group sit in the right front passenger’s position (for example, don’t secure a rear-facing child restraint in your vehicle) until you have your vehicle serviced. If your vehicle is an extended cab pickup and this ever happens, don’t let anyone whom the national government has identified as a member of a passenger air bag risk group sit in the right front passenger’s position (for example, don’t secure a rear-facing child restraint in the right front passenger’s seat) until you have your vehicle serviced.

Voltmeter

United States

Canada

When your engine is not running, but the ignition is in RUN, this gage shows your battery’s state of charge in DC volts. When the engine is running, the gage shows the condition of the charging system. Readings between the low and high warning zones indicate the normal operating range.

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Readings in the low warning zone may occur when a large number of electrical accessories are operating in the vehicle and the engine is left at an idle for an extended period. This condition is normal since the charging system is not able to provide full power at engine idle. As engine speeds are increased, this condition should correct itself as higher engine speeds allow the charging system to create maximum power. You can only drive for a short time with the reading in either warning zone. If you must drive, turn off all unnecessary accessories. Readings in either warning zone indicate a possible problem in the electrical system. Have the vehicle serviced as soon as possible.

Shift Light (If Equipped)

This light is used on some models with manual transmissions.

The SHIFT indicator light will help you get the best fuel economy. See “Shift Light” or “Shift Speeds” in the index for more information.

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Brake System Warning Light With the ignition on, the brake system warning light will flash when you set the parking brake. The light will flash if the parking brake doesn’t release fully. If you try to drive with the parking brake engaged, a chime will sound when the vehicle speed is greater than 3 mph (5 km/h). Your vehicle’s hydraulic brake system is divided into two parts. If one part isn’t working, the other part can still work and stop you. For good braking, though, you need both parts working well. If the warning light comes on, there could be a brake problem. Have your brake system inspected right away.

United States

Canada

This light should come on briefly when you turn the ignition key to RUN. If it doesn’t come on then, have it fixed so it will be ready to warn you if there’s a problem. If the light comes on while you are driving, pull off the road and stop carefully. You may notice that the pedal is harder to push. Or, the pedal may go closer to the floor. It may take longer to stop. If the light is still on, have the vehicle towed for service. See “Towing Your Vehicle” in the Index.

CAUTION:

Your brake system may not be working properly if the brake system warning light is on. Driving with the brake system warning light on can lead to an accident. If the light is still on after you’ve pulled off the road and stopped carefully, have the vehicle towed for service.

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Anti-Lock Brake System Warning Light With the anti-lock brake system, this light will come on when you start your engine and may stay on for several seconds. That’s normal.

If the light stays on, or comes on when you’re driving, your vehicle needs service. If the regular brake system warning light isn’t on, you still have brakes, but you don’t have anti-lock brakes. If the regular brake system warning light is also on, you don’t have anti-lock brakes and there’s a problem with your regular brakes. See “Brake System Warning Light” earlier in this section. The anti-lock brake system warning light should come on briefly when you turn the ignition key to RUN. If the light doesn’t come on then, have it fixed so it will be ready to warn you if there is a problem.

Low Traction Light (If Equipped)

If you have the Traction Assist System, this light will come on when the system is limiting wheel spin. See “Traction Assist System” in the Index.

You may feel or hear the system working or notice a lack of accelerator response, but this is normal. The LOW TRACTION light also comes on briefly when you turn your ignition to RUN. If the light doesn’t come on then, the system may require service; have it fixed so it will be there to tell you when the traction system is active. Slippery road conditions may exist if this light comes on, so adjust your driving accordingly.

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Traction Off Light (If Equipped)

If you have the Traction Assist System, this light should come on briefly when you turn the ignition to RUN.

If the light doesn’t come on then, the system may require service; have it fixed so it will be there to warn you if the system is turned off. If the light stays on, or comes on when you’re driving, there may be a problem with your Traction Assist System and your vehicle may need service. When this light is on, the system will not limit wheel spin. Adjust your driving accordingly. The TRACTION OFF light may come on for the following reasons: D If you turn the system off by pressing the TAS on/off button the light will come on and stay on. To turn the system back on, press the button again; the light should go off.

D If you move the shift lever to FIRST (1), the light

will come on and stay on to indicate that the traction system is off. This is normal operation. To turn the system back on, move the shift lever back to a position other than FIRST (1); the light should go off. See “Traction Assist System” in the Index. D The light will come on and stay on if the TAS

automatic engagement feature has been turned off. To turn the system on, press the TAS off/on button; the light should go off. To turn the automatic engagement feature back on, see “Traction Assist System” in the Index.

D If the Traction Assist System is affected by an anti-lock brake system, TAS or engine-related problem, the system will turn off and the light will come on. Have your vehicle serviced.

D If the vehicle is driven over an extremely rough road,

the system will turn off and the light will come on. The light will go off a few seconds after the rough road conditions go away or when the vehicle comes to a complete stop. This is normal operation.

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Engine Coolant Temperature Gage

Transmission Temperature Gage (If Equipped)

United States

Canada

This gage shows the engine coolant temperature. It also provides an indicator of how hard your vehicle is working. During a majority of the operation, the gage will read 210_F (100_C) or less. If you are pulling a load or going up hills, it is normal for the temperature to fluctuate and approach the 250_F (122_C) mark. If the gage reaches the 260_F (125_C) mark, it indicates that the cooling system is working beyond its capacity. See “Engine Overheating” in the Index.

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United States

Canada

Your vehicle may be equipped with a transmission temperature gage. When your ignition is on, the gage shows the temperature of the transmission fluid. The normal operating range is from 100_F (38_C) to about 265_F (130_C).

At approximately 265_F (130_C), the message center will display a TRANS FLUID HOT message and the transmission will enter a transmission protection mode. When the transmission enters the protection mode, you may notice a change in the transmission shifting patterns. The transmission will return to normal shifting patterns when the transmission fluid temperature falls below 260_F (127_C). See “Message Center” in the Index for further information. If the transmission fluid reaches temperatures of approximately 275_F (135_C) or greater, the message center will display a TRANS HOT...IDLE ENG warning message. Pull the vehicle off the roadway when it is safe to do so. Set the parking brake, place the transmission in PARK (P) and allow the engine to idle until the transmission temperature falls below 260_F (127_C). If the transmission continues to operate above 265_F (130_C), please contact your nearest dealer or the GM Roadside Assistance Center. See “Roadside Assistance” in the Index.

NOTICE:

If you keep driving your vehicle with the transmission temperature gage above the normal operating range, you can damage the transmission. This could lead to costly repairs that may not be covered under your warranty.

The following situations can cause the transmission to operate at higher temperatures: D Towing a trailer D Hot outside air temperatures D Hauling a large or heavy load D Low transmission fluid level D High transmission fluid level D Restricted air flow to the radiator and the auxiliary

transmission oil cooler (if equipped).

A temporary solution to hotter transmission operating temperatures may be to let the transmission cool down. If the transmission is operated at higher temperatures on a frequent basis, see “Scheduled Maintenance” in the Index for the proper transmission maintenance intervals.

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Malfunction Indicator Lamp (Service Engine Soon Light in the United States or Check Engine Light in Canada)

United States

Canada

Your vehicle is equipped with a computer which monitors operation of the fuel, ignition and emission control systems.

This system is called OBD II (On-Board Diagnostics-Second Generation) and is intended to assure that emissions are at acceptable levels for the life of the vehicle, helping to produce a cleaner environment. The SERVICE ENGINE SOON or CHECK ENGINE light comes on to indicate that there is a problem and service is required. Malfunctions often will be indicated by the system before any problem is apparent. This may prevent more serious damage to your vehicle. This system is also designed to assist your service technician in correctly diagnosing any malfunction.

NOTICE:

If you keep driving your vehicle with this light on, after a while, your emission controls may not work as well, your fuel economy may not be as good and your engine may not run as smoothly. This could lead to costly repairs that may not be covered by your warranty.

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NOTICE:

Modifications made to the engine, transmission, exhaust, intake or fuel system of your vehicle or the replacement of the original tires with other than those of the same Tire Performance Criteria (TPC) can affect your vehicle’s emission controls and may cause the SERVICE ENGINE SOON or CHECK ENGINE light to come on. Modifications to these systems could lead to costly repairs not covered by your warranty. This may also result in a failure to pass a required Emission Inspection/Maintenance test.

This light should come on, as a check to show you it is working, when the ignition is on and the engine is not running. If the light doesn’t come on, have it repaired. This light will also come on during a malfunction in one of two ways: D Light Flashing -- A misfire condition has been

detected. A misfire increases vehicle emissions and may damage the emission control system on your vehicle. Dealer or qualified service center diagnosis and service may be required.

D Light On Steady -- An emission control system malfunction has been detected on your vehicle. Dealer or qualified service center diagnosis and service may be required.

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If the Light Is Flashing The following may prevent more serious damage to your vehicle: D Reducing vehicle speed. D Avoiding hard accelerations. D Avoiding steep uphill grades. D If you are towing a trailer, reduce the amount of

cargo being hauled as soon as it is possible.

If the light stops flashing and remains on steady, see “If the Light Is On Steady” following. If the light continues to flash, when it is safe to do so, stop the vehicle. Find a safe place to park your vehicle. Turn the key off, wait at least 10 seconds and restart the engine. If the light remains on steady, see “If the Light Is On Steady” following. If the light is still flashing, follow the previous steps, and drive the vehicle to your dealer or qualified service center for service.

If the Light Is On Steady You may be able to correct the emission system malfunction by considering the following: Did you recently put fuel into your vehicle? If so, reinstall the fuel cap, making sure to fully install the cap. See “Filling Your Tank” in the Index. The diagnostic system can determine if the fuel cap has been left off or improperly installed. A loose or missing fuel cap will allow fuel to evaporate into the atmosphere. A few driving trips with the cap properly installed should turn the light off. Did you just drive through a deep puddle of water? If so, your electrical system may be wet. The condition will usually be corrected when the electrical system dries out. A few driving trips should turn the light off.

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Have you recently changed brands of fuel? If so, be sure to fuel your vehicle with quality fuel. See “Fuel” in the Index. Poor fuel quality will cause your engine not to run as efficiently as designed. You may notice this as stalling after start-up, stalling when you put the vehicle into gear, misfiring, hesitation on acceleration or stumbling on acceleration. (These conditions may go away once the engine is warmed up.) This will be detected by the system and cause the light to turn on. If you experience one or more of these conditions, change the fuel brand you use. It will require at least one full tank of the proper fuel to turn the light off. If none of the above steps have made the light turn off, have your dealer or qualified service center check the vehicle. Your dealer has the proper test equipment and diagnostic tools to fix any mechanical or electrical problems that may have developed.

Emissions Inspection and Maintenance Programs Some state/provincial and local governments have or may begin programs to inspect the emission control equipment on your vehicle. Failure to pass this inspection could prevent you from getting a vehicle registration. Here are some things you need to know in order to help your vehicle pass an inspection: Your vehicle will not pass this inspection if the SERVICE ENGINE SOON or CHECK ENGINE light is on or not working properly. Your vehicle will not pass this inspection if the OBD (on-board diagnostic) system determines that critical emission control systems have not been completely diagnosed by the system. The vehicle would be considered not ready for inspection. This can happen if you have recently replaced your battery or if your battery has run down. The diagnostic system is designed to evaluate critical emission control systems during normal driving. This may take several days of routine driving. If you have done this and your vehicle still does not pass the inspection for lack of OBD system readiness, see your dealer or qualified service center to prepare the vehicle for inspection.

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Oil Pressure Gage

CAUTION:

Don’t keep driving if the oil pressure is low. If you do, your engine can become so hot that it catches fire. You or others could be burned. Check your oil as soon as possible and have your vehicle serviced.

United States

Canada

NOTICE:

Damage to your engine from neglected oil problems can be costly and is not covered by your warranty.

The oil pressure gage shows the engine oil pressure in psi (pounds per square inch) when the engine is running. Canadian vehicles indicate pressure in kPa (kilopascals). Oil pressure may vary with engine speed, outside temperature and oil viscosity, but readings above the low pressure zone indicate the normal operating range. A reading in the low pressure zone may be caused by a dangerously low oil level or some other problem causing low oil pressure. Check your oil as soon as possible. See “Check Eng Oil Pressure” and “Engine Oil” in the Index.

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Cruise Light (If Equipped)

Tow/Haul Light (Automatic Transmissions Only)

United States

Canada

The CRUISE light comes on whenever you set your cruise control. See “Cruise Control” in the Index. 4WD Light (If Equipped)

The 4WD indicator will light up when you shift a manual transfer case into four-wheel drive and the front axle engages.

Some delay between shifting and the indicator’s lighting is normal. See “Four-Wheel Drive” in the Index for more information.

This message is displayed when the tow/haul mode has been activated.

For more information see, “Tow/Haul Mode” in the Index.

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When the fuel tank is low the Low Fuel message will appear. See “Message Center” in the Index. Here are some situations you may experience with your fuel gage. None of these indicate a problem with the fuel gage. D At the gas station, the fuel pump shuts off before the

gage reads full.

D It takes a little more or less fuel to fill up than the

fuel gage indicated. For example, the gage may have indicated the tank was half full, but it actually took a little more or less than half the tank’s capacity to fill the tank.

D The gage goes back to empty when you turn off

the ignition.

If you have a diesel engine, see “Fuel Gage” in the Diesel Engine Supplement.

Fuel Gage

United States

Canada

When the ignition is on, the fuel gage tells you about how much fuel you have left in your tank. The gage will first indicate empty before you are out of fuel, and you should get more fuel as soon as possible.

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Message Center The message center is located on the left side of the instrument panel cluster. It gives you important safety and maintenance facts. When you turn the ignition on, the entire center lights up for just a few seconds. As needed, the message center will display one of the following messages. The message center is capable of alternating among different messages if needed. Battery

The battery display will also stay on while the key is in RUN until the engine is started. If the message stays on after starting the engine it could indicate a problem with the generator drive belt, or some other charging system problem. Have it checked right away. Driving with this message displayed could drain your battery. If you must drive a short distance with this message displayed, it helps to turn off all your accessories, such as the radio and the air conditioner.

If this message is displayed when the engine is running, you may have a problem with your charging system.

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Trans Fluid Hot If you have an automatic transmission, you have a transmission temperature warning display contained in the message center.

If the transmission fluid temperature becomes high, the message will be displayed.

When the transmission enters the protection mode you may notice a change in the transmission shifting patterns. When the transmission fluid temperature returns to normal, the display will turn off and the transmission shifting patterns will return to normal.

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NOTICE:

If you keep driving your vehicle with the transmission TRANS FLUID HOT message displayed, you can damage the transmission. This could lead to costly repairs that may not be covered under your warranty.

The following situations can cause the transmission to operate at higher temperatures: D Towing a trailer D Hot outside air temperatures D Hauling a large or heavy load D Low transmission fluid level D High transmission fluid level D Restricted air flow to the radiator and the auxiliary

transmission oil cooler (if equipped).

A temporary solution to hotter transmission operating temperatures may be to let the transmission cool down. If the transmission is operated at higher temperatures on a frequent basis, see “Scheduled Maintenance” in the Index for the proper transmission maintenance intervals.

Trans Hot...Idle Engine If you have an automatic transmission, you have a transmission over-temperature display contained in the message center.

If this warning message is displayed, pull the vehicle off the roadway when it is safe to do so.

Set the parking brake and place the transmission in PARK (P). Idle the engine until the message center no longer displays a message. If idling the engine does not turn the warning message off after 10 to 15 minutes, contact your nearest dealer or the GM Roadside Assistance Center. See “Roadside Assistance” in the Index.

NOTICE:

If you keep driving your vehicle with the transmission TRANS HOT...IDLE ENGINE message displayed, you can damage the transmission. This could lead to costly repairs that may not be covered under your warranty.

The following situations can cause the transmission to operate at higher temperatures: D Towing a trailer D Hot outside air temperatures D Hauling a heavy load D Low transmission fluid level D High transmission fluid level D Restricted air flow to the radiator and the auxiliary

transmission oil cooler (if equipped).

A temporary solution to hotter transmission operating temperatures may be to let the transmission cool down. If the transmission is operated at higher temperatures on a frequent basis, see “Scheduled Maintenance” in the Index for the proper transmission maintenance intervals.

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Low Coolant

Engine Overheated

This message is displayed when the cooling system is low on coolant.

This message is displayed when the cooling system temperature gets too hot.

The engine may overheat. See “Engine Coolant” in the Index and have your vehicle serviced as soon as you can. Check Coolant Temp

This message will be displayed after the air conditioning system has automatically turned off for the engine coolant protection mode. See “Engine Overheating” in the Index for further information.

This message is displayed when the cooling system temperature gets hot.

Check the coolant temperature gage and the coolant level. See “Engine Coolant” and “Engine Coolant Temperature Gage” in the Index. See “Engine Overheating” in the Index for further information.

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Reduced Engine Power (V8 Gasoline Engines Only)

This message is displayed when the cooling system temperature gets too hot and the engine further enters the engine coolant protection mode.

Check Eng Oil Level (Gasoline Engine)

This message is displayed when the engine oil level is low.

If your vehicle is equipped with the 8.1L engine, this light may come on because of an electronic throttle control system fault. See “Engine Overheating” in the Index for further information. Check Eng Oil Pressure

This message is displayed when the engine oil pressure is low.

Once oil is added, it may need time to drain and settle in the engine before this message will turn off. It is best to let the engine cool down (if it is hot) or warm up (if it is cold) and cycle the ignition to be sure this message turns off. Refer to the dipstick for the correct level. See “Engine Oil” in the Index on how to check the oil level and for what type of oil to add.

See “Oil Pressure Gage” in the Index for more information.

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Change Engine Oil

Security

This message is displayed when the engine oil needs to be changed. The message is only displayed for 15 seconds at the start of each ignition cycle.

This message is displayed when the content theft-deterrent system has been activated and also monitors the PasslockR System.

When you change the engine oil, be sure to reset the Engine Oil Life Monitor. See “Engine Oil, When to Change” in the Index.

If the security message is displayed continuously while driving and stays on, there may be a problem with the Passlock System. Your vehicle will not be protected by Passlock, and you should contact your GM dealer.

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Service 4WD (If Equipped)

Low Washer Fluid

If the SERVICE 4WD message comes on, there may be a problem with the automatic transfer case and service is required.

This message is displayed when the vehicle is low on windshield washer fluid. The message is only displayed for 15 seconds at the start of each ignition cycle.

Malfunctions can be indicated by the system before any problem is apparent, which may prevent serious damage to the vehicle. This system is also designed to assist your service technician in correctly diagnosing a malfunction.

For more information see, “Windshield Washer Fluid” in the Index.

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Cargo Lamp On

Low Fuel

This message is displayed when the cargo lamp is turned on and the ignition key is turned to RUN.

This message is displayed when your vehicle is low on fuel.

Refer to the fuel gage for a better indication of the amount of fuel remaining in the fuel tank.

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Section 3 Comfort Controls and Audio Systems

In this section, you’ll find out how to operate the comfort control and audio systems offered with your vehicle. Be sure to read about the particular systems supplied with your vehicle.

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3-3

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Comfort Controls Standard Comfort Controls Heater and Air Conditioning Comfort Controls (If Equipped) Electronic Climate Control System (If Equipped) Air Conditioning Heating Defogging and Defrosting Rear Window Defogger (If Equipped) Ventilation System Audio Systems Setting the Clock for Systems with SET Button

3-13

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3-16

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Setting the Clock for Systems with HR and MN Buttons AM-FM Stereo AM-FM Stereo with Compact Disc Player and Automatic Tone Control (If Equipped) Remote Cassette Tape Player (If Equipped) Theft-Deterrent Feature (If Equipped) Understanding Radio Reception Tips About Your Audio System Care of Your Compact Discs Care of Your Compact Disc Player Fixed Mast Antenna

3-

3-1

Comfort Controls Standard Comfort Controls

Fan Knob The knob on the left side of the control panel adjusts the fan speed. To increase airflow, turn the knob clockwise. To decrease airflow, turn it counterclockwise. To turn the fan off, turn the knob to OFF.

Temperature Knob The middle knob on the control panel lets you select the temperature of the air flowing into the passenger area. Turn the knob clockwise toward the red area for warmer air. Turn the knob counterclockwise toward the blue area for cooler air. 3-2

Mode Knob The right knob on the control panel allows you to choose the direction of air delivery.

(Vent): This setting directs the air through the

instrument panel outlets.

(Bi-Level): Air is delivered through the floor

outlets as well as the instrument panel outlets. The air flow can be divided between instrument panel and floor outlets depending upon where the knob is placed between the settings.

(Floor): This setting directs most of the air through the floor outlets, and the rest of the air is divided between the windshield defroster outlets and the side window defroster outlets.

(Blend): Airflow is delivered through the floor outlets, the windshield defroster outlets and the side window defroster outlets. The air flow can be divided between floor and defrost depending upon where the knob is placed between the settings.

(Defrost): This setting directs most air through

the windshield defroster outlets, side window defroster outlets and some through the floor outlets.

Heater and Air Conditioning Comfort Controls (If Equipped)

Fan Knob The knob on the left side of the control panel adjusts the fan speed. To increase airflow, turn the knob clockwise. To decrease airflow, turn it counterclockwise. To turn the fan off, turn the knob to OFF.

Temperature Knob The middle knob on the control panel lets you select the temperature of the air flowing into the passenger area. Turn the knob clockwise toward the red area for warmer air. Turn the knob counterclockwise toward the blue area for cooler air.

Mode Knob The right knob on the control panel allows you to choose the direction of air delivery.

(Vent): This setting directs the air through the

instrument panel outlets and the center floor console (if equipped).

(Bi-Level): Air is delivered through the

instrument panel outlets and center floor console outlets (if equipped) as well as the floor outlets. The air flow can be divided between panel and floor depending on where the knob is placed between the settings. Pressing the A/C button while in this mode causes cooler air to come out of the instrument panel outlets and center floor console outlets (if equipped) and warmer air to come out of the floor outlets.

(Floor): This setting directs most of the

warmed air through the floor outlets and center floor console outlets (if equipped), as well as some air through the windshield defroster outlets and side window defroster outlets. If air from the center floor console outlets is not desired, turn the vents off at the console.

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 (Blend): Airflow is delivered through the floor outlets, center floor console outlets (if equipped), the windshield defroster outlets and the side window defroster outlets. The air conditioning compressor may run to dehumidify the air to prevent window fogging.

(Defrost): This setting directs most of the air

through the windshield defroster outlets, side window defroster outlets and some air through the floor and center floor console outlets (if equipped). If air from the center floor console is not desired, or more defroster performance is desired, turn the vents off at the console. When in defrost mode, the air conditioning compressor may run to dehumidifying the air and limit window fogging.

(Outside Air): Press this button to direct the

system to use outside air. Pressing the outside air button will cancel the recirculation button.

(Recirculation): Press this button to limit the

amount of outside air entering the vehicle. This is helpful when you are trying to limit odors entering the vehicle or attempting to quickly cool down the interior. Pressing recirculation will recirculate air continuously. Recirculation is used when the fan is OFF to limit odors, outside air and dust from entering your vehicle. All button lights will go off. The last setting selected will activate when the fan is turned back on. Pressing the recirculation button will cancel the outside air button. To return to normal operation and to prevent stale air, be sure to return to outside air. If the mode knob is placed between floor and blend mode, outside air is forced to reduce window fogging. If the recirculation button is pressed, the LED indicator will flash three times indicating that forced outside air is activated and recirculation is not available.

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The auto recirculation feature will activate when the following are true: D The air conditioning system is activated, D the outside air button is on, and D the vehicle load is high due to city traffic, extended

idling or hot weather.

The system will automatically switch to the recirculation mode to lower the system load and improve interior comfort. The outside air and recirculation button LEDs will not change. The system will return to the outside air function when the system load is reduced.

A/C (Air Conditioning): Press this button to turn

the air conditioning on and off. The system will cool and dehumidify the air inside the vehicle when the A/C light is on. Air conditioning will be automatically disabled when the outside temperature drops below a level at which air conditioning is effective.

Electronic Climate Control System (If Equipped)

Fan Control The knob on the left side of the electronic climate control panel operates the fan speed. To manually increase airflow, move the knob clockwise. To manually decrease airflow, move it counterclockwise. OFF: If the knob is in OFF, outside air will still enter the vehicle, and will be directed based on the position of the mode knob.

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AUTO: If the knob is in AUTO, the fan speed will vary as the system maintains the selected temperature. When both the fan control and mode knobs are in the AUTO position, the system will then automatically maintain the last selected temperature setting. Manual control of functions is also available.

Temperature Knob The middle knob on the control panel lets you select the desired air temperature in your vehicle. This knob will allow you to adjust the interior air temperature setting. Move the knob clockwise toward 82_F (28_C) for warmer air. Move the knob counterclockwise toward 66_F (19_C) for cooler air. When the system is set for automatic operation, sensors will control the fan speed. Full Hot: If you turn the temperature knob past 82_F (28_C), the system will go into the “full hot” mode. The system will remain at that maximum heating setting and the fan will blow at the speed the fan knob is set to. If the fan is in AUTO, it will run at full speed.

Full Cold: If you turn the temperature knob past 66_F (19_C), the system will go into the “full cold” mode. The system will remain at that maximum cooling setting and the fan will blow at the speed the fan knob is set to. If the fan is in AUTO, it will run at full speed. Mode Knob -- Manual Operation The right knob on the control panel allows you to choose the direction of air delivery. You can choose to set the climate control system yourself, or let the system work for you by placing the system in AUTO mode. See “Mode Knob -- Automatic Operation” later in this section.

(Vent): This setting directs most of the air through the instrument panel outlets and a small amount through the floor outlets.

(Bi-Level): Air is delivered through the floor

outlets as well as the instrument panel outlets.

(Floor): This setting directs most of the air through the floor outlets and some air through the windshield defroster outlets.

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 (Blend): Airflow is divided equally between the

floor outlet and the windshield defroster outlets. The air conditioning compressor may run to dehumidify the air to prevent window fogging.

(Defrost): This setting directs most of the air

through the windshield defroster outlets with airflow also delivered from the side window and the floor outlets. When in defrost mode, the air conditioning compressor may run to dehumidify the air and limit window fogging.

(Outside Air): Press this button to force the

system to use outside air. Press it again to close off the outside air. Pressing the outside air button will cancel the recirculation button.

(Recirculation): Press this button to limit the

amount of outside air entering your vehicle. This is helpful when you are trying to limit odors entering your vehicle or attempting to quickly cool down the interior. In the AUTO mode, the system will use recirculation as necessary to cool the air. Pressing the recirculation button will change the operation to a manual mode and the air will recirculate non-stop. Press this button again to turn off the recirculation feature. Recirculation may be selected with the fan control in OFF to limit odors, outside air and dust from entering your vehicle. Pressing the recirculation button will cancel the outside air button.

A/C: Press this button to turn the air conditioning on and off. The system will cool and dehumidify the air inside the vehicle when the A/C light is on. When in AUTO, the A/C is automatically engaged when necessary. Air conditioning will be automatically disabled when the outside air temperature drops below a level at which air conditioning is effective. Remember that in order for the automatic system to perform well, it needs A/C to provide cooling performance.

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Mode Knob -- Automatic Operation The right knob on the control panel allows you to choose the direction of air delivery. When the system is set for automatic operation, sensors will control the air delivery mode. Air will come primarily from the floor or instrument panel outlets, with some air directed to the windshield to prevent fogging. When the system is in AUTO mode, the air conditioning light will turn on, and the recirculation and outside air lights turn off. With the system in full auto control (both the fan and mode knobs in AUTO), you still have the ability to override any function. However, continually overriding the outside air or the A/C compressor will limit the ability of the system to cool the vehicle quickly. If you push a button for a function which is not available, the light next to that button will flash three times to alert you that it’s not available. To find your comfort zone, start with the 74_F (23_C) setting and allow about 20 minutes for the system to adjust the temperature if necessary.

With the automatic setting, the air conditioning compressor automatically cycles when needed to cool the air. In cold weather, when the system senses the need for heat, the airflow will be directed out of the floor outlets. As the interior temperature approaches a desired setting, the fan speed will decrease. To maintain interior comfort, the airflow will adjust between the instrument panel outlets and floor outlets. On bright sunny days in cool weather, the airflow may come out of the air conditioning and floor outlets (bi-level mode) to maintain comfort and prevent stuffiness. To avoid blowing cold air in cold weather, the system will delay turning on the fan until warm air is available. The length of delay depends on the outside air temperature, engine coolant temperature or the time since the engine was last started. As the coolant warms up, the fan speed will gradually increase and air will flow from the floor outlets, with some airflow to the windshield to prevent fogging under most normal conditions. Be careful not to put anything over the solar sensor located around the center of the instrument panel. This sensor is used by the automatic system to regulate temperature.

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Air Conditioning On hot days, open the windows long enough to let hot air inside escape. This reduces the time it takes for your vehicle to cool down. Then keep your windows closed for the air conditioner to work its best. The recirculation button allows the air inside your vehicle to be recirculated. This setting helps to maximize your air conditioner’s performance and your vehicle’s fuel economy. This setting also cools air the fastest and can be used to keep unwanted odors and/or dust from entering the vehicle. When using the air conditioner, turn off the recirculation button after the vehicle reaches a comfortable interior temperature. When the right knob on the control panel is between floor and defrost, the recirculation feature will not function to reduce window fogging. The A/C button, below the mode knob, allows the air