GMC Troubleshooting Questions? Ask a Mechanic for Answers
.Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.In order to begin to know what is failing with you back up assist system the first thing you are going to need to do is use a capable scanner and check trouble codes. If you can get this done and post back with the fault codes and or codes we can work from there.
Okay see if you can get me a fault code and we can work from there.