Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello, my name is***** figure out if problem is door switch or BCM you/mechanic will need to disconnect BCM and check to see if pins 53, 54, or 72 on connector 1 have ground. 53 is for right rear door, 54 left rear door, and 72 is front right door. So depending on which one has ground will mean that is the door switch that has failed. If none of them have ground that means the BCM is the problem. I'm not sure why dealership wasn't able to do this test to begin with, I'd ask them and if they charged you for looking at it last time I'd let them know you expect diagnosis to be free or discounted since they only did half of the troubleshooting required. Let me know if you have more questions, thanks.