Rear Hatch Ajar Indicator
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 instrument panel cluster (IPC) illuminates the rear hatch ajar indicator in the message center when the body control module (BCM) detects that either of the lift window latches are open. 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.