Either the switch at that particular door has gone bad or you have a BCM that is going out. To be sure here are the wiring diagrams and a guide so you can test the circuit and the BCM location with replacement instructions below:
https://www.2carpros.com/articles/how-to-check-wiring
Remove the knee bolster. Refer to Knee Bolster Replacement (Except Cadillac) , Knee Bolster Replacement (Cadillac)
1 Body Control Module
Remove the BCM cover.
Disconnect the electrical connectors.
Press on the tabs to release the body control module.
If a replacement module is installed, program the module. Refer to Control Module References .
Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Thursday, June 6th, 2019 AT 2:34 PM