Park Lamp Out
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The IPC illuminates the park lamp out indicator in the message center when the BCM determines a park lamp out condition exists. The IPC receives a class 2 message from the BCM requesting illumination.
The IPC sends a class 2 message to the radio in order to activate an audible warning.