GM Service Manual Online
For 1990-2009 cars only

Exterior Lamp Control Lever

The lever on the left side of the steering column operates the exterior lamps.


Object Number: 871852  Size: B2

: Turn the outside band on the lever with this symbol to operate the exterior lamps, except for the fog lamps.

Turn the outside band to this position to turn the headlamps off.

AUTO (Automatic): Turn the outside band to this position to set the headlamps so that they will automatically come on when it is dark outside. The headlamps, taillamps, and instrument panel lighting will also come on when the windshield wipers are activated. See Windshield Wiper Lever for more information.

(Parking Lamps): Turn the outside band to this position to turn on the parking lamps together with the following:

    • Sidemarker Lamps
    • Taillamps
    • License Plate Lamps
    • Instrument Panel Lamps

& (Headlamps): Turn the outside band to this position to turn on the headlamps, together with the lamps listed previously.

Fog Lamps

Fog lamps provide brighter roadway lighting for better vision in foggy or misty conditions.

(Fog Lamps): Turn the second band on the exterior lamps control lever to this position to turn the fog lamps on. The band will return to its original position.


Object Number: 901788  Size: A1

This symbol appears on the instrument panel cluster when the fog lamps are on.

To turn the fog lamps off, turn the band up to the fog lamp symbol and release it. The band will return to its original position. If the high-beam headlamps are on, the fog lamps will turn off. The fog lamps will go on again when the low-beam headlamps are turned back on.

The parking lamps must be on for the fog lamps to work.

Headlamp High/Low-Beam Changer

Push forward on the exterior lamps control lever to change the headlamps from low to high-beam. Pull the lever back and then release it to change from high to low-beam.


Object Number: 808597  Size: A1

This symbol appears on the instrument panel cluster when the high-beam lamps are on.

When the high-beam headlamps are on, the fog lamps will not be on. If the vehicle is equipped with the Head-Up-Display (HUD) an arrow will appear in the HUD area indicating that the high-beams are on. See Head-Up Display (HUD)

Headlamps On Reminder

A warning chime will sound if the exterior lamp control is left on in either the headlamp or parking lamp position and the driver's door is opened with the ignition off.

Flash-To-Pass Feature

This feature allows the use of the high-beam headlamps to signal the driver in front of you that you want to pass.

Pull and hold the exterior lamps control lever to use this feature. When this is done, the following will occur:

    • The high-beam headlamps will turn on, while the headlamps are off, in low-beam, or in Daytime Running Lamps (DRL) mode. They will stay on as long as the lever is held in this position. Release the lever to turn them off.
    • The headlamps will switch to low beam If the headlamps had been in the high-beam mode. To return to high-beam, push the lever.

If the vehicle is equipped with Head-Up Display (HUD), an arrow will appear on the display to indicate that the high beams are on.

Turn and Lane-Change Signals

To signal a turn, move the lever all the way up or down. The lever returns automatically when the turn is complete.


Object Number: 900950  Size: A1

An arrow on the instrument panel cluster will flash in the direction of the turn or lane change.

If the vehicle is equipped with the Head-Up-Display (HUD), the turn signals will appear in the HUD area when making turns or lane changes. See Head-Up Display (HUD)

Raise or lower the lever until the arrow starts to flash to signal a lane change. Hold it there until the lane change is complete. The lever returns to its original position when it is released.

Arrows that flash rapidly when signaling for a turn or lane change may be caused by a burned-out signal bulb. Other driver's will not see the signal.

Replace burnt out bulbs. See Replacement Bulbs , Front Turn Signal, Parking and Fog Lamps , and Taillamps, Turn Signal, and Stoplamps . Also, check the fuse for burnt out bulbs if a signal indicator fails to work when signalling a turn. See Fuses and Circuit Breakers for location information.

Turn Signal On Chime

If the turn signal is left on for approximately 1 mile (1.61 km), a warning chime will sound and the TURN SIGNAL ON warning message will appear on the Driver Information Center (DIC) display. See "Turn Signal On" under DIC Warnings and Messages

Daytime Running Lamps

Daytime Running Lamps (DRL) can make it easier for others to see the front of the 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 make the turn signal lamps come on when the following conditions are met:

    • It is still daylight and the ignition is in RUN or START.
    • The exterior lamp control is in off or AUTO with the headlamps off.
    • The transaxle is not in PARK (P) and the parking brake is released.

When the DRL are on, no exterior lamps, except for the front turn signal/parking lamps will be on. The instrument panel will not be lit up either.

When the exterior lamp control is in AUTO and it is dark enough outside, the DRL will turn off and the low-beam headlamps at full brightness will turn on. When it is bright enough outside, the front turn signal lamps will go off, and the DRL will turn back on. If the vehicle is started in a dark garage, the automatic headlamp system will come on immediately. Once the vehicle leaves the garage, it will take approximately one minute for the automatic headlamp system to change to DRL if it is light outside. During that delay, the instrument panel cluster may not be as bright as usual. Make sure the instrument panel brightness control is at the highest setting. See "Instrument Panel Brightness" under Interior Lamps

Vehicles sold in the U.S. can turn the DRL off. To do this, turn the band on the exterior lamp control to off. Turn the band to this position again to turn the DRL on.

As with any vehicle, the regular headlamp system should be turned on when needed.

Light Sensor


Object Number: 871859  Size: A2

The light sensor for the DRL and AUTO headlamps feature is located on top of the instrument panel.

If the sensor is covered, it will register that it is dark outside and the headlamps will turn on to full brightness.

Exterior Lighting Battery Saver

If the parking lamps or headlamps have been left on, the exterior lamps will turn off approximately 10 minutes after the ignition is turned to OFF. This protects the battery from being drained. The battery saver does not work if the headlamps are turned on after the ignition is turned to OFF.

If the lamps need to be left on for more than 10 minutes, use the exterior lamp control to turn the lamps back on.