GM Service Manual Online
For 1990-2009 cars only

Headlamps

The headlamps are controlled by the multifunction lever located on the left side of the steering column. They will come ON with the ignition switch in any position. Turning the headlamp switch to the first position turns ON the parking lamps, the sidemarker lamps, the license plate lamps, and the instrument panel illumination. Turning the switch to the second position turns ON all of theprevious lamps and the headlamps. Turning the switch to the OFF position turns OFF all the lamps.

Headlamp high beam and low beam are also controlled by this lever. When the headlamps are ON, pushing the lever away from the driver until the switch clicks changes the lamp from low beam to high beam, and returns to low beam when the lever is pulled back. Pulling the lever toward the driver also turns ON the high beam. The headlamps return to low beam when the lever is released. An indicator lamp on the instrument cluster assembly will come on when the high-beam headlamps are ON.

The headlamps must be aimed for proper illumination of the road. Headlamp aim should be checked whenever a new headlamp assembly is installed or service repairs to the front end area may have disturbed the headlamp assembly or its mountings.

Parking And Turn Signal Lamps

The parking lamps can be turned on by turning the lighting switch to the first position. The parking lamps can be turned OFF by turning the switch to the OFF position. If the parking lamps are ON and the ignition switch is OFF with the driver's door open, a warning tone will sound as a reminder to turn the lamps OFF.

The front, side, and rear turn signals are controlled by the lighting switch on the left side of the steering column. Moving the lever all the way up or down, past the detent, will turn ON the turn signals. When the turn is completed, the lever will return to horizontal and the turn signals will stop flashing.

For changing lanes or shallow turns, where the steering wheel does not turn far enough to cancel the signal, move the signal only to the first detent and hold it there. When the lever is released, it will return to horizontal and the turn signal will cancel.

The turn signals work only when the ignition switch is ON.

Fog Lamps

The front fog lamp switch is located on the left side cluster housing. To use the front fog lamps, turn on the headlamps or the parking lamps; then push the appropriate fog lamp switch.

The front fog lamps should not be used as a substitute for the headlamps.

The indicator light in the instrument cluster will illuminate to indicate that the fog lamps are ON. Push the switch again to turn OFF the fog lamps. The indicator light will then go off.

The front fog lamps must be aimed for proper illumination of the road. Fog lamp aim should be checked when a new bulb is installed or if service or repairs in the front end area may have disturbed the fog lamp mountings.

Rear Combination Lamps

The taillamps, stoplamps, backup lamps and turn signal lamps, are one assembly and the rear fog lamps are rear bumper. Turning ON either the headlamps or the parking lamps will also turn ON the taillamps. When the brake pedal is pushed, the taillamps will glow more brightly to serve as stoplamps. The center high-mounted stoplamp is located in the rear window and will also come on when the brake pedal is pressed. The turn signals are controlled by the multifunction lever on the left side of the steering column. If the brake pedal is held down when a turn is signaled, one side will flash and the other will stay bright. When the transaxle is shifted into reverse, the backup lamps will come on. On vehicles with an automatic transaxle, the backup lamps are activated by the park/neutral position switch. On vehicles with a manual transaxle, they are activated by a backup lamp switch connected to the transaxle.

License Plate Lamp

The license plate lamps will come on when the headlamps or the parking lamps are ON. The license plate lamps are mounted above the license plate.

Daytime Running Lamps

The daytime running lamps (DRL) will come on when:

    • The ignition is ON.
    • The light is OFF.
    • The parking brake is released.

When the exterior lights are on, the DRL will turn off. To turn the DRL off when idling, apply the parking brake.

Battery Saver

The automatic lighting Off feature turns off the headlamps, park lamps, taillamps, license plate lamps and instrument panel illumination with in seconds of closing the driver's door.

The feature activates if you leave the headlamps switch in the first or second position, remove the key, and get our of the car.