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  1. Question: P1345 Code, Anybody familiar?

    Duramax First Generation: 2001-2004 (LB7)
    Howdy Yall, longtime lurker here but I can’t seem to find what I’m looking for through searching. I just picked up a 2001 2500HD LB7/ZF6 recently and its been great! Used to have another ‘01 with the ally but alas it died an untimely death, but I digress... The check engine light came on, so...