Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello, my name is*****/Black wire in pin 2 of the DkGray PCM connector and the Purple/White wire in pin 10 of the same connector go to the vehicle speed sensor. I would run new wires between PCM and speed sensor to see if that helps, if not you need to replace the PCM assuming new speed sensor is good. let me know if you have more questions, thanks.