Body Control Module (BCM)

The Body Control Module (BCM) controls interior illumination. One of three BCM types is installed on this vehicle based on vehicle equipment:
- BCM type 2 provides interior illumination control, inadvertent load (battery rundown) protection, chime functions, and automatic power door locks.
- BCM type 3 provides BCM type 2 features plus key less entry system (RPO AUO).
- BCM type 4 provides BCM type 2 and 3 features plus content theft deterrent (RPO UA6) with remote activation verification and remote alarm.