Malibu V6-3.5L VIN 8 (2004)
Daytime Running Lamp: Description and Operation
DAYTIME RUNNING LAMPS (DRL)
The ambient light sensor is a light sensitive transistor that varies its voltage signal to the body control module (BCM) in response to changes to the
outside (ambient) light level. When the BCM receives this signal it will either turn ON the daytime running lights (DRL) or the headlights if the
headlamp switch is in the AUTO position. Any function or condition that turns ON the headlights will cancel the daytime running lamps operation. With
the headlight switch in the AUTO position, the headlights will either be turned ON or OFF, after an approximate 30 second delay depending on whether
daylight or low light conditions are sensed. The DRL illuminates the park/turn signal and DRL lamps. The DRL will operate when the ignition switch is
in the ON position, the gear selector is not in the PARK position and the parking brake is released. When these conditions have been met and the
ambient light sensor indicates daytime conditions, the DRL will illuminate.
DRL operation in manual transmission equipped vehicles will occur when the ignition switch is in the ON position, and the parking brake is released.
