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Thread: 4L60e to 4L80e

  1. 03-12-2009 04:52 PM #1
    maze2525
    maze2525 is offline Senior Member
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    4L60e to 4L80e

    I seen the sticky thread on this very nice and helpfull but it says that u need to reflash ur pcm for the 4L80e. My question is who can do this can the dealer or does it have to be a tuner? Im new to all of this so if u could put in new guy turms that would be great
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  2. 03-12-2009 04:53 PM #2
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    SCIV
    SCIV is offline 5,981 cc's
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    Need your PCM reflashed. May I recommend:

    Nelson Performance - Performance without Sacrificing Drivability
    Gone, but not forgotten!
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  3. 03-13-2009 09:08 AM #3
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    GasGuzzler
    GasGuzzler is offline Pants on the ground
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    Nope, not at the dealer.
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  4. 03-13-2009 10:20 AM #4
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    banker099
    banker099 is offline Senior Member
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    not only the retune but the wires are in different places on the trans harness that goes to the pcm...so u will need a 4l60-4l80 conversion harness...pretty sure nelson performance carries those too
    ↓↓↓click pic to go to garage↓↓↓

    408, WCCHL92s, nelson tune,4L80e 3600 Circle D,
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  5. 03-13-2009 04:38 PM #5
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    Melissa@NelsonPerformance
    Melissa@NelsonPerformance is offline Custom Tuning
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    We offer tuning and the harness for the 60e to the 80e. Please call me or PM for more information 210-626-0278

    Thanks!

    Her name is A Meli-
    "If everything is under control, you are going too slow."- MA
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