Lights On Warning

WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

The BCM activates the lights on warning as requested by the headlamp dimmer switch. The lights on warning sounds when the following occurs:

The key is out of the ignition.
The BCM determines that the driver's door is open (signal is low).
The BCM determines that the headlamp switch is in the park or head position.