Trunk Ajar Indicator System Operation

The trunk ajar indicator system function is to alert the vehicle operator when the vehicles rear compartment lid has inadvertently been left ajar or open. Failure of the trunk ajar indicator system does not affect rear compartment lid operation or any other vehicle system.

The driver information center (DIC) located at the bottom of the instrument panel cluster (IPC), illuminates the TRUNK AJAR indicator when the body control module (BCM) detects that the rear compartment lid ajar switch is closed to ground indicating the rear compartment lid is open. The IPC receives a GMLAN serial data message from the BCM indicating the rear compartment lid ajar status. If this message is displayed and the vehicle speed is greater than 4.8 km/h (3 mph), a chime will sound.