The Body Control Module (BCM) controls the operation of various electrical units installed on the vehicle. As I always recommend with computer controlled cars, have the computer memory checked for Diagnostic Trouble Codes first, before spending a lot of time checking or replacing parts.

SYSTEMS CONTROLLED BY BCM DIRECTLY

Power door lock system.

Remote keyless entry system.

Power window system.

Sunroof system.

Room lamp timer.

Key reminder

Warning chime

Turn signal and hazard warning lamps

NOTE: Power supply only. No system control.

SYSTEMS CONTROLLED INDIRECTLY BY BCM

Headlamp, tail lamp, fog lamp, auto light system

Wiper

Front washer

Rear window defogger