Daytime Running Lamps (DRL)

All vehicles are equipped with daytime running lamps (DRL). The DRL system includes a solid state module, and on Chevrolet vehicles only the system includes an automatic control ambient light sensor.

Chevrolet And Canadian Chevrolet/Pontiac
The light sensor is located on the I/P, inside of the vent grille. The light sensor triggers the DRL module to turn on the turn signal lamps when all of the following conditions apply:
^ The vehicle has been started.
^ The vehicle is in daylight.
^ The headlamp switch is in the OFF position.

Turning the headlamps on manually overrides the DRL system. The following lights are not on when the DRL are on:
^ The I/P lights
^ The taillamps

The car light sensor triggers the module to turn the headlamps ON under the following conditions:
^ At dusk
^ If the car is started in the darkness

The light sensor will perform the following actions after sunrise, or when the vehicle is in a bright enough area:
^ Turn OFF the headlamps
^ Turn ON the turn signal lamps

Pontiac
The DRL system turns the turn signal lamps ON when the vehicle is started. The turn signal lamps will stay on until the headlamps are turned on manually in order to override the system.