Door Lock System Components

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. 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:

Left front door lock switch
Right front door lock switch
Endgate/liftgate lock cylinder switch (utilities only)
Door lock relay
Door unlock relay
Driver door unlock relay
Body Control Module (BCM)
Reversible door lock actuators in each of the doors
MIR/LOCK 3A fuse (switch supply voltage
PWR LKS15A fuse (relay supply voltage)