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Thread: 04 Yukon/4l65 tranny tune/any experts in here?

  1. #1
    Junior Member
    Join Date
    Aug 2008

    Default 04 Yukon/4l65 tranny tune/any experts in here?

    if i post my tune, any chance of looking at and making some adjustments. want a nice firm shift.
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  2. #2
    Lifetime Member
    Join Date
    Aug 2010


    Hello Turboolds,

    The purpose of this Forum is to learn how to effectively use the EFILive software - with support from other enthusiasts.

    Take a look at the thread linked below ...!&

    It is Gen III based transmission tuning tutorial - directly applicable to your vehicle. A search of the Forum will lead you to many more of these types of threads.

    Here is another link to several threads on the subject ...

    As you work your way through tuning your transmission, and have questions - post them and they will get answered.

    Last edited by Taz; October 18th, 2011 at 08:09 AM. Reason: - additional link added

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