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Showing results for tags 'diagnostics'.
I have a 98 Concours, Check Engine Light has been on for a couple months, I did replace battery a few months ago. Light went out temporarily. A week ago I started, Security & Air Bag Warning went on, attempted several times, always started, no other functions worked. I contacted local GMC dealer (there is a recall on the airbags) and scheduled for Monday. Monday it started, no issues, no warnings, perfect condition. Rescheduled check up for Wednesday. Wednesday, started at higher ambient temperature, all warnings were illuminated. I suspect bad PC module and informed dealer of same, they claimed they have to check all 10 error codes. I was informed today that my bill is $450 and they have no idea what the problem is. Certified GMC Dealer, they were going to provide a flow chart of electrical. I suspect that's it'a a main PC module, replace same with original PCM chip and download security info? Any feedback from anyone is appreciated Dan C Audioplus, Sandpoint, ID