started running poorly a few days ago
My 89 GMC sierra does not have a vacuum modulator valve,it started running like crap a few days ago and shifting from first to second,it slams,shifts hard going into second. Why?
Is this a good question?
My 89 GMC sierra does not have a vacuum modulator valve,it started running like crap a few days ago and shifting from first to second,it slams,shifts hard going into second. Why?
Is this a good question?
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