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Thread: 2018 Colorado ZR2 8L45 New TCM

  1. #1
    Tuner in Training
    Join Date
    Feb 2009
    Posts
    26

    2018 Colorado ZR2 8L45 New TCM

    I bought a used TCM and sent it in the HPtuners to be unlocked. Is there anything specific that has to be done before I remove the original TCM and install this unlocked TCM? I thought there was a special sequence to get the correct solenoid data out of the transmission.

    Thanks.

  2. #2
    Tuner in Training
    Join Date
    Feb 2009
    Posts
    26
    Found some instructions and did a replace TCM with the scanner. That seems good.