I have a 1991 GMC jimmy my brake light flashes 7 times repeatedly what does this mean? Thanks
pretty sure you only have rear wheel antilock on that. I think it is an abs code. google how to scan the computer for OBD1 gmc engine codes. not hard all you need is a paper clip and count the flashes, but you need to put the clip in the correct terminals, I believe it is A and B, but check your Haynes manual to be sure.
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