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new rear end gear tune?

This is a discussion on new rear end gear tune? within the Computer & Tuning forums, part of the LSx Technical Help Section category; If i were to put a new gear in my rear end in my automatic would i need to reprogram ...

  1. #1
    Junior Member
    Join Date
    May 2009
    Livonia mi

    1999 trans am

    new rear end gear tune?

    If i were to put a new gear in my rear end in my automatic would i need to reprogram anything to make this work correct for shift points or anything else?

  2. #2 Tuner
    Frost's Avatar
    Join Date
    Jul 2007
    Richmond VA
    2,415 Sponsor
    GM Tuner

    You need it to fix your speedo...

  3. #3
    Member mvvette97's Avatar
    Join Date
    Aug 2005
    leon iowa

    1997 corvette 00 WS6 TA

    yep you need to have the tune changed because the shift points will be all screwed up.

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