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. DRL are helpful in many different driving conditions, but they can be especially helpful in the short periods after dawn and before sunset. Fully functional DRL are required on all vehicles first sold in Canada. The vehicle has a light sensor on top of the instrument panel that controls the DRL. Make sure it is not covered, or the head lamps will be on when they are not needed.

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

    • The ignition is on.
    • The exterior lamps control is in AUTO.
    • The exterior lamps control is in the parking lamps only position (This applies only to vehicles that are first sold in Canada).
    • The light sensor detects daytime light.
    • The parking brake is released or the vehicle is not in PARK.

When the DRL system is on, the taillamps, sidemarker lamps, parking lamps, and instrument panel lights are not on unless you turn the exterior lamps control to the parking lamp position.

As with any vehicle, you should turn on the regular headlamp system when they are needed.