GM Service Manual Online
For 1990-2009 cars only

Object Number: 1240597  Size: B3

The control on the driver's side of your instrument panel operates the exterior lamps.

(Exterior Lamps): Turn the knob, located to the right of this symbol, to choose one of the four exterior lamp positions.

(Off): Turn the knob to this position to turn off all exterior lamps including the DRLs.

AUTO: Turn the knob to this position to automatically turn on the headlamps at normal brightness, together with the following:

    • Sidemarker Lamps
    • Taillamps
    • Parking Lamps
    • Instrument Panel Lights

See "Automatic Headlamp System" following, for more information.

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

    • Sidemarker Lamps
    • Taillamps
    • License Plate Lamps
    • Instrument Panel Lights
&(Headlamps): Turn the knob to this position to turn on the headlamps, together with the previously listed lamps and lights. You can switch your headlamps from low to high beam by pushing the turn signal/multifunction lever toward the instrument panel.

Automatic Headlamp System

Your vehicle may be equipped with this feature. 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 may also be dim.

Your vehicle may have a light sensor located on the top of the instrument panel. 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 system 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.

If you start your vehicle in a dark garage, the automatic headlamp system will come on immediately. Once you leave the garage, it will take approximately several seconds for the automatic headlamp system to change to DRL if it is light outside. During that delay, your instrument panel cluster may not be as bright as usual. Make sure your instrument panel brightness control is in the full bright position. See "Instrument Panel Brightness" under Interior Lamps .

Lamps On Reminder

If a door is open, a reminder chime will sound when your headlamps or parking lamps are manually turned on and your key is out of the ignition. To turn off the chime, turn the headlamp switch to off and then back on. In the automatic mode, the headlamps turn off once the ignition is in LOCK.

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:

    • The ignition is on.
    • The exterior lamps control is in AUTO.
    • The automatic transmission is not in PARK (P).
    • The light sensor determines it is daytime.

When the DRL are on, only your DRL lamps will be on. The taillamps, sidemarkers and other lamps will not be on. The instrument panel will not be lit up either.

When it begins to get dark, the automatic headlamp system will switch from DRL to the headlamps.

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

Fog Lamps

If your vehicle has fog lamps you can use them for better vision in foggy or misty conditions. Your parking lamps and/or low-beam headlamps must be on for your fog lamps to work.


Object Number: 808603  Size: A1

The fog lamp button is located near the exterior lamps control.

Press the button to turn the fog lamps on while the headlamps or parking lamps are 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 your fog lamps in the dark without turning on the headlamps.

The fog lamps will go off whenever your high-beam headlamps come on. When the high beams go off, the fog lamps will come on again.

Cargo Lamps

If your vehicle is equipped with cargo lamps, you can use them if you need more light in the cargo area of your vehicle. To turn the cargo lamps on, the dome lamp override must not be activated.


Object Number: 1240600  Size: A2

Press this button to turn the cargo lamps on and off.