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  1. D

    Help! At the end of my rope

    Update: Just the ECM, not Dan's TCM
  2. D

    Help! At the end of my rope

    Sounds like it's more of a hardware issue vs. software ( tune ). Something is really janky in ECM.
  3. D

    Help! At the end of my rope

    I appreciate all the responses. They found the issue. The ECM is commanding a 6000 rpm shift at 3-4 for a split second. Weird.
  4. D

    Help! At the end of my rope

    I'm near Madison.
  5. D

    Help! At the end of my rope

    I appreciate all the responses. The builder keeps claiming it's the truck. I had another reputable shop look at the truck they weren't sure.
  6. D

    Help! At the end of my rope

    Southern Wisconsin.
  7. D

    Help! At the end of my rope

    The stock tune was put back into it, and it did it.
  8. D

    Help! At the end of my rope

    No idea...
  9. D

    Help! At the end of my rope

    Thanks for the reply. I will hopefully get the files Monday.
  10. D

    Help! At the end of my rope

    Anyone please help us! 03 Lb7. Built trans, lift pump, Triple disc, Dan's Tcm, reputable tune. It has shifted horribly hard from 3-4 over 70% throttle since built, with only a shift tie code once. I'm talking tailgate flops down, about hops off the ground. The builder whom has built many...
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