Circuit Description
WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
The body control module (BCM) monitors and supplies an output voltage on the door lock control circuit. When the BCM receives a lock command from the remote control door lock receiver or an automatic door lock function has been activated, the BCM supplies voltage on the door lock control circuit to LOCK the doors.