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 unlock control circuit. When the BCM receives an unlock command from the remote control door lock receiver or the ignition key is removed after an automatic door lock function has been activated, if programmed, the BCM supplies voltage on the door unlock control circuit to unlock the passenger doors.