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Thread: Problem with Chevy ECM downloads.(Unable to detect the vehicles diagnostics protocol)

  1. #41
    HP Tuners Support
    (foff667)
    Bill@HPTuners's Avatar
    Join Date
    Jun 2004
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    Hailing from Parts Unknown
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    26,235
    Quote Originally Posted by rpmextreme View Post
    Any updates on this. I have 2 MPVI2s that both come up with Detect Protocol failed when trying to read a 05 GM 5.3 ECU 12589463. Both units have been fully updated and I ran Both the current Beta and latest software with no luck.

    My MPVI original reads and writes just fine......
    This problem requires a bit more attention for us to solve. Please open a support ticket so we can further assist you. That can be done here: https://support.hptuners.com/index.php?/Tickets/Submit
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  2. #42
    Potential Tuner
    Join Date
    Feb 2019
    Posts
    1
    I fixed my problem
    Last edited by JH7; 04-26-2019 at 12:13 AM.

  3. #43
    Potential Tuner
    Join Date
    Aug 2019
    Posts
    3
    I just did the 0411 swap and ordered HPtuners to start tuning it. Unfortunately I have come across the same unable to connect issue. I raised a ticket, hopefully this can be resolved quickly.

  4. #44
    Tuner in Training
    Join Date
    Dec 2018
    Location
    Spokane, WA.
    Posts
    11
    How did you fix your problem? This just happened to me on a customers truck and now the ecm isnt being found and saying detect protocol failed.
    Quote Originally Posted by jh7 View Post
    i fixed my problem

  5. #45
    Potential Tuner
    Join Date
    Aug 2019
    Posts
    3
    My issue is with the 0411 swap. Something happened to make the ODBII unable to be scanned. Will be trouble shhoting this weekend.