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  1. Thomas Moore

    Missing under load after tune-up.

    Hi all. I need some help. I have a 1993 GMC Sierra 1500 SLE 5.7 Automatic with316k on the clock. The truck was missing but ran pretty good and reliably. An experienced mechanic friend offered to help me replace my leaking radiator, do a tune up and clean up the grease and oil from leaking valve...
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