GM Service Manual Online
For 1990-2009 cars only

Daytime Running Lamps (DRL) can make it easier for others to see the front of your vehicle during the day. Fully functional Daytime Running Lamps (DRL) are required on all vehicles first sold in Canada.

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

    • The ignition is on.
    • The exterior lamp band is in the automatic position.
    • The transmission is not in P (Park).
    • The light sensor determines it is daytime.
    • The parking brake is released.

When the DRL are on, the low-beam headlamps will be on at a reduced brightness. The taillamps, sidemarker, instrument panel lights and other lamps will not be on.

When the exterior lamp band is turned to the headlamp position, the low-beam headlamps come on. The other lamps that come on with the headlamps will also come on.

When the headlamps are turned off, the regular lamps will go off, and the low-beam headlamps come on to the reduced brightness.

To idle your vehicle with the DRL off, move the shift lever to P (Park). The DRL will stay off until the shift lever is moved out of the P (Park) position.

The regular headlamp system should be turned on when needed.