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Thread: G8 wont shift at wot

  1. #1
    Tuner in Training
    Join Date
    Jun 2019
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    23

    G8 wont shift at wot

    need help my g8 l76 6l80 will not shift at WOT I hit rev limiter at 6400 rpm but it is supposed to shift at 6000 myg8geardod.hpt 2.hpl

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Location
    Rogers, MN
    Posts
    9,400
    Lower the shift mph a few to see if that works.

    Because you have the part throttle 100% for 2nd gear at 62mph and the full throttle shift speed table at 58mph. Those should have matching values. You are tagging the limiter at 60-61mph from what it looks like.

    Side thing here, you should add knock retard, cylinder airmass and your injector information to future logs, they are really helpful things to know.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

  3. #3
    Tuner in Training
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    Jun 2019
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    23
    I lowered shift mph down to around 54 and it?s still doing it

  4. #4
    Tuner in Training
    Join Date
    Jun 2019
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    23
    I do have 3.45 gears but have changed that under the speedometer tab

  5. #5
    Go to transmission section, scroll down, get Bluecat software. Input values and copy paste to tune

  6. #6
    Tuner in Training
    Join Date
    Jun 2019
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    23
    I downloaded it and put my information in but figure out where to input that information to go tuners

  7. #7
    Tuner in Training
    Join Date
    Jun 2019
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    23
    I got Bluecat figured out and it fixed my issue thank you!

  8. #8
    Yeah, that program is awesome