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Thread: writer transfer: x7F Negative response Code

  1. #1
    Tuner in Training
    Join Date
    Dec 2017
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    writer transfer: x7F Negative response Code

    Hallo...

    I tryed to flash my Duramax today after making a new mod. Flashed it earlier today with no problem.

    And then this weird massage came up.

    It deleted the ECM, and will not write it again.

    Result. Car is dead...

    HELP.....
    Last edited by Jonass; 02-19-2018 at 03:33 PM.

  2. #2
    Tuner in Training
    Join Date
    Dec 2017
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    20
    Hmm... After waiting some hours. I could write it.

    But why this problem?

  3. #3
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    13,564
    Which version of the software are you using?

    Do you have an aftermarket radio stuff or electronics plugged in while you attempt to flash the vehicle?

    It seems that most of the time that issue is related to battery/power/wiring issues.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  4. #4
    Tuner in Training
    Join Date
    Dec 2017
    Posts
    20
    Hallo sir.

    I am running 3.6.26. The newest.

    I also tryed with a battery charger. No difference.?

    Original Radio. :-)

    But yes, there could be an issue with some elektroniks. That could take some time to finde. :-)