I'd the light is red then there is a fault in the onstar system. If there was no light there might have been a logic lock situation. So you will Joe to get the onstar module scan for codes that will take a professional scan tool none of the diyer scan tools will do that. It night also take a professional scan tool to help diagnosis the problem. If you get the code Wright it down the exact. Code number not code descriptions and let me know what they are.
Monday, July 18th, 2016 AT 12:38 PM