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Thread: Unrecognized PCM

  1. #1
    New Member
    Join Date
    Oct 2007
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    Default Unrecognized PCM

    This is a drivetrain from a 04 8.1 yukon with a 4l80e that was put into an 02 3500 drw. All I need to do is to turn off the dtc for the rear fuel sending unit and I'll be happy. It still thinks it has a rear tank and when it trips the dtc the fuel guage flops over to E. The GM tech that is working on this has fixed every other PCM and BCM problems except this, which he says he is unable to do. This was sent to efi support almost a month ago and Andrew seems to be trying but no word from development yet. Take a look and see what ya think. Thanks RR
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