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 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 in daylight when the following conditions are met:

    • The ignition is on.
    • The exterior lamps control is in the AUTO position.
    • The shift lever is not in PARK (P).
    • The light sensor determines it is daytime.

When the DRL are on, only the DRL lamps will be on. The taillamps, sidemarker, 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.

To turn off the DRL, turn the exterior lamp control to the off position and then release it. For vehicles first sold in Canada, the transmission must be in the PARK (P) position, before the DRL can be turned off.