Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is***** am an ASE Master Technician and I am glad to help you out with your question.
There is a tsb available for this problem, it involves adding dielectric grease to a connector.
I can send you this tsb if you would like, if you accept click the enter contact info, then enter your email address then I will email it to you.
You also need to the gm scan tool to check for codes.