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Thread: What TCMs need to be sent in to unlock?

  1. #1
    Advanced Tuner
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    What TCMs need to be sent in to unlock?

    What TCMs do we need to send in to get unlocked?

  2. #2
    Advanced Tuner IARLLC's Avatar
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    I think that all TCMs 2017 and newer are locked until made otherwise. No totally sure about ALL of them. Even through T87 has been around since 2014 or so, in 2017 GM introduced the T87A, similar but with the ability to lock you out of editing and unreadable.

  3. #3
    Tuning Addict 5FDP's Avatar
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    2017+ 6L80e TCM's do not require this service, just to give more information. Those use different TCM's than the 8 and 10 speeds.
    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
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    So would a T87 from 2016 need to be unlocked? On a 8 speed C7 z06?

  5. #5
    Tuning Addict 5FDP's Avatar
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    No, because that is not a T87A.

    The website says it's for T87A's only.
    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.

  6. #6
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    Thanks guys