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Thread: Firebird segment swap AT-MT

  1. #1

    Firebird segment swap AT-MT

    Hi everybody,

    i've got a customers car in the shop which was equipped with a replacement PCM of a different car, because the customer wanted to keep the stock PCM.
    the problem is that the replacement was out of a manual and all the trans tables are wrong.
    next the replacement has a different OS, but fuel system, system and speedo cal numbers are only are different by one digit.

    the question is if i can swap the trans segments form OS 12212156 to 12202088 out of a AT file I found in the repository.

    Thanks

  2. #2
    Tuning Addict 5FDP's Avatar
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    May 2012
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    Segments swap require that the OS's be exactly the same. So both OS's must be a 12212156 for example.

    If you want stuff to be completely trouble free you really should just flash the computer with a GM tool to the OS that you really need. This way you are starting with the correct automatic OS.
    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.