GM Service Manual Online
For 1990-2009 cars only

Object Number: 1250375  Size: A3

The dial to the left of the steering wheel on the instrument panel controls the following positions:

(Parking Lamps): Turn the dial to this position to turn on the parking lamps, together with the taillamps, sidemarker lamps, license plate lamps, and instrument panel lights.

& (Headlamps): Turn the dial to this position to turn on the headlamps, together with the parking lamps, taillamps, sidemarker lamps, and license plate lamps.

AUTO (Automatic Headlamps): Turn the dial to AUTO to provide for automatic operation of the headlamps, taillamps, sidemarker lamps, and parking lamps. For more information see "Automatic Headlamp System" following.

(Off): Turn the switch to this position to turn all lamps off.

Daytime Running Lamps (DRL)

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.

The DRL system will make your low-beam headlamps come on at a reduced brightness when the following conditions are met:

    • The ignition is on.
    • The exterior lamp control is turned to AUTO and the light sensor detects daytime light.
    • The exterior lamp control is turned to the off position.
    • The parking brake is released.
    • For vehicles with automatic transmissions, the shift lever is not in PARK (P).

When the DRL system is on, the taillamps, sidemarker lamps, parking lamps, and instrument panel lights will not be illuminated unless you have turned the exterior lamps control to the parking lamp or headlamp position.

The DRL system will remain off any time your vehicle is in PARK (P) or the parking brake is engaged the first time the ignition is turned on.

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

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 on the top of the instrument panel under the defroster grill. Make sure it is not covered, which will cause the system to be on whenever the ignition is on.

The system may also be on when driving through a parking garage, heavy overcast weather, or a tunnel. This is normal.

If you start your vehicle in a dark garage, the automatic headlamp system will come on immediately.

As with any vehicle, you should turn on the regular headlamps when you need them.

The headlamps can be set to come on at different levels. The sensitivity can be adjusted to Early, Normal, or Late. See Vehicle Personalization .

Leaving the headlamps and parking lamps on when the engine is not running will eventually drain the battery. To prevent the battery from draining, the headlamp and parking lamps will switch off when the ignition has been switched off and the driver's door is opened, because the vehicle senses that the driver has forgotten to switch off the lights. The lights stay off until the ignition is again switched on, or the lights are turned back on manually by the headlamp switch. The headlamps can be set to automatically switch off after you have locked the vehicle and walked away. To set or adjust the time delay from when the driver's door is opened to when the lights automatically switch off, see Vehicle Personalization . If you wish to have the lights on when leaving the vehicle, wait until they have been automatically switched off, then turn the light switch first to off, then to parking lamps or headlamps.

Fog Lamps

The dial to the left of the steering wheel on the instrument panel also controls the fog lamps.

(Fog Lamp): When using the fog lamps, the ignition must be on as well as the parking lamps or the low-beam headlamps. If the high-beam headlamps are activated or flashed, the fog lamps will turn off.

Pull the exterior lamp adjuster dial out to turn the fog lamps on, and push the dial in to turn the fog lamps off. The indicator light in the knob will come on when the fog lamps are working.

Headlamps and Dimming Instructions

When the headlamps are switched on, the instrument panel is automatically illuminated. Once illuminated, you can adjust their brightness. Some illuminated areas of the vehicle have been linked to the brightness control, such as the trip computer, headlamp switch, radio, etc. This means that the interior lights can be adjusted to your preference. When the headlamps are turned off and back on again, the brightness level reverts to the last adjusted setting. See Interior Lamps for more information.

Headlamps On When Approaching the Vehicle

Your vehicle is designed to provide additional security, when returning to the vehicle at night. When the UNLOCK or LOCK button on the key is used, the car's exterior lights will come on for a preset time or until the car is relocked. This feature only works if the headlamp control is in the AUTO or headlamp positions.

To set or adjust the time the headlamps stay on after the UNLOCK button has been pressed, see Vehicle Personalization .