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    Trans issue again

    Hay there i owen a 2004 chevy silverado 2500 hd 6.6 duramax and i put a trans from a 2002 GMC Sierra 2500 hd 6.6 duramax and got it all hooked up and flushed my cooler and lines and put new filters in and seals and started it check engine turned on right away i checked the codes and got the...