Answers: You hold a 46 yr old truck. 46 yrs! Not 4 yrs. Not 6 yrs. But 46 yrs!! Most of the folks alive when that truck be new are in a minute dead or close to limp.
Instead of asking here, do a search for elder GMC pickup clubs or forums. If none exist, start your own. You might be the only accomplice for a couple of years, but you never know.
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