Lights On Warning
WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
The instrument panel cluster (IPC) activates the lights on warning as requested by the body control module (BCM). The BCM sends a GMLAN message to the IPC indicating the chime frequency (fast rate) and duration (continuous). The lights on warning sounds when the following occurs:
- The ignition is OFF.
- The BCM determines that the driver door is open (signal circuit is low).
- The BCM determines that the headlamp switch is in the PARK or HEAD position.