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Thread: Help with shift times on 6L80?

  1. #1

    Help with shift times on 6L80?

    I was able to change my "Desired Shift Time for Base Up-shifts" in my 2007 Sierra Denali (6L80). That section is not available in my 2010 Sierra SLT (6L80). There are a bunch of new fields and some that relate to shift times but not so cut and dry. I attached my tune any advice on how to you would shorten shift times a based on my .hpt file?

    Thanks,

    Mark

    2010 GMC Sierra Ext Cab SLT 2wd 6.2L/6L80 w/3.42's
    HPT Pro w/LM-1 Wideband, AR Longtubes, AFE Intake, Gibson 3.5'' Exhaust, SLP UD Pulley, 160* Stat... New times coming soon..


  2. #2
    Advanced Tuner
    Join Date
    May 2007
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    Check out the G8 thread in this forum, there is alot of education in that thread from me and several other members from our trial and error in tuning the 6L80E's.

  3. #3
    I read all 16 pages of that thread last night. I don't have the same tables in my 2010.
    2010 GMC Sierra Ext Cab SLT 2wd 6.2L/6L80 w/3.42's
    HPT Pro w/LM-1 Wideband, AR Longtubes, AFE Intake, Gibson 3.5'' Exhaust, SLP UD Pulley, 160* Stat... New times coming soon..


  4. #4
    Tuner in Training
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    Horicon, WI
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    I just opened your 2010 file with the Beta version I'm running. The only shift times available are the Power Downs. None of the other ones show up.

    So - I don't have any help for you, but I can say that it probably isn't just you!
    Scott Braemer
    2000 NHRA Trans Am - LS1
    2006 Trailblazer SS - LS2
    2008 GMC Sierra Denali - L92

  5. #5
    HP Tuners Support
    (foff667)
    Bill@HPTuners's Avatar
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    Strategy may have changed(GM does this ALL the time) but if you want, shoot support an email with your file & link to this thread and I can have our head engineer confirm.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  6. #6
    Advanced Tuner midevil1's Avatar
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    Quote Originally Posted by markislive View Post
    I read all 16 pages of that thread last night. I don't have the same tables in my 2010.
    WHY ON EARTH WOULD YOU GET RID OF YOUR DENALI??!!!!???
    2023 Ford Edge ST

    2020 Ford F150 King Ranch 5.0

  7. #7
    Quote Originally Posted by midevil1 View Post
    WHY ON EARTH WOULD YOU GET RID OF YOUR DENALI??!!!!???
    Lighter tuck (Ext Cab)
    2010 GMC Sierra Ext Cab SLT 2wd 6.2L/6L80 w/3.42's
    HPT Pro w/LM-1 Wideband, AR Longtubes, AFE Intake, Gibson 3.5'' Exhaust, SLP UD Pulley, 160* Stat... New times coming soon..


  8. #8
    Advanced Tuner
    Join Date
    Jun 2009
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    203
    true, a 2010 escaalde only has the power downs but no other shit time... only some tables for max torque transition