Door Lock System Components
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The power door lock system consists of the following components:
- The driver door module (DDM)
- The passenger door module (PDM)
- The body control module (BCM)
- The rear door lock switch
- The door lock relay
- The door unlock relay
- The reversible door lock actuators in each of the doors
- LOCKS 20A fuse (relay supply voltage)