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Thread: 4l80e tune

  1. #1
    Tuner in Training
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    4l80e tune

    Will a 2005 4l80e tune work in a 2007 new body style computer? Is the a difference between 2005 and 2008 4l80e transmission tunes? Thanks for helping

  2. #2
    Tuning Addict 5FDP's Avatar
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    May 2012
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    It won't work.

    The 2005 truck is a P59 computer. The 2007 new body style truck is a E38 computer. Nothing about the calibrations is the same.
    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.

  3. #3
    Tuner in Training
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    Is it better to buy 08 express t42 tcm or reflash current t42?