Operation CHARM: Car repair manuals for everyone.
Hosted by mcallihan.com

Body Control Module (BCM)

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

For more information regarding the BCM, refer to Body Control System.

For a description of the RPO Code(s) shown in this article, refer to the RPO Code List found at Vehicle/Application and ID. Application and ID