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Thread: 2009 lmm tuning issue

  1. #1
    New Member
    Join Date
    Jan 2008

    Default 2009 lmm tuning issue

    I am trying to read the program that is on it. I connect to it and it takes 45 min to compete read which I know should only take 6 min. Then it errors out to this Click image for larger version. 

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    HELP I think I need a PCM but would like assistance

  2. #2
    Lifetime Member GMC-2002-Dmax's Avatar
    Join Date
    Dec 2005


    The ecm is locked with a patch, if its a DSP5 you will never get the file out because the file is stored on the flash chip and in other READ ONLY MEMORY areas.

    If it is a single tune and the patch is applied you won't get anything out of it either.

    Most likely you are attempting to read out a patched/locked file.

    Tuner of many, many Duramax and Cummins Diesels.

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