I could give you some very complex diagnostic instructions. But I'll tell you how I do it when these cars hit my stall: first place your ear against the door latch area and press the door lock switch, if you hear anything at all, you will be needing a door lock actuator. Very very very common! Next pull back the door boot at the driver side door jamb and inspect the wires for breaks, especially the pink wire. I have attached a circuit test for this circuit to test for continuity. Other tests would need to be performed with a scan tool because the windows are controlled by the gem module.
Images (Click to enlarge)
Monday, July 20th, 2020 AT 9:41 AM