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Thread: Is there a trick to doing a "read entire" on an A40 TCM in 2007 LBZ?

  1. #1
    Potential Tuner
    Join Date
    Mar 2007
    Posts
    4

    Is there a trick to doing a "read entire" on an A40 TCM in 2007 LBZ?

    I can't get a TCM read out of my 2007 LBZ. it keeps failing on a time out error. Anyone else experience this or have any suggestions how to get it to complete? Thinking of doing a bench harness for the TCM to take everything else off the bus.

    Thanks in advance

    Ed

  2. #2
    Tuner in Training
    Join Date
    May 2021
    Posts
    25
    I haven’t personally had any issues reading them, even on efi live tuned vehicles.

  3. #3
    Potential Tuner
    Join Date
    Mar 2007
    Posts
    4
    Reads & writes fine with ECM & TCM on a bench harness...Tech 2 talks with both modules fine in the vehicle...guess I'll try some fuse pulling on other modules to try and get HP Tuners to work on the TCM in the vehicle..