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  1. TommyJoe

    Unknown plug or piston 4R75E

    My wife's 2005 Expy lost 1st and 2nd gear. Trans shop said fried, 2400 to rebuild. It is now on my bench. Re-Build many of trans over the last 40 years and I have a dilemma. I am sure because it was build on 01-02-2005 that might be the jinx. As I removed the trans pan, a piston or plug fell...
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