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 are required on all vehicles first sold in Canada.

A light sensor on top of the instrument panel makes the DRL work, so be sure it is not covered. The DRL system makes the front turn signal lamps come on in daylight when the following conditions are met:

    • The ignition is on.
    • The exterior lamps control is off.

When the DRL are on, only the front turn signal lamps will be on. The instrument panel will not be lit up.

The exterior lamps automatically switch from DRL to regular headlamps depending on the darkness of the surroundings.

If vehicle is started in a dark garage, the automatic headlamp system comes on immediately. Once the vehicle leaves the garage, it takes approximately 30 seconds for the automatic headlamp system to change to DRL if it is light outside. During that delay, the instrument panel cluster may not be as bright as usual. Make sure the instrument panel brightness control is in the full bright position. See Instrument Panel Brightness .

To idle the vehicle with the DRL and automatic headlamps off, toggle the exterior lamp control to off after starting the vehicle.

The regular headlamp system should be turned on when needed.