Body Control Module
The body control module (BCM) controls various vehicle electrical systems or features from one central module, instead of using individual modules for each system or feature.
The BCM is located beneath the instrument panel cluster (IPC) to the right of the steering column and is mounted in a flat, horizontal position. The BCM fitted to various levels of vehicles is physically the same, but with different functions in the BCM software.
IMPORTANT:
Disconnect and remove all vehicle modules, after disconnecting the battery, before performing any welding anywhere on the vehicle. Failing to do this can cause permanent damage to the modules.
If the BCM is to be replaced, ensure that the correct BCM is used. The last 3 digits of the BCM part number identify the BCM.