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Thread: 6l80-90 slipping config file?

  1. #1

    6l80-90 slipping config file?

    2012 gmc sierra denali, i have about a thousand miles on it and want to tune it just to make it drive better, seams like maybe trans line pressure is low? feels like its slipping in 2nd and 3rd at low load and lower speed without too much throttle input sometimes. is there a way to log slipping? from what ive read online it seams a tune will fix this, im pretty sure its not really a problem i hate the way this truck shifts and when it shifts, im planning on having the dealer look at it once i figure out whats going on and before i tune it.
    '09 cobalt ss. hahn intercooler, intake, cp,catless downpipe, ottp stage 2 mounts, hptuners, gmpp 3bar tmap sensors, hybrid hp tuned

  2. #2
    Tuner in Training
    Join Date
    Oct 2011
    Posts
    22
    With alot of 6l80s and 6l90s, if the fluid ever gets low, it will cause it too feel like that. check your fluid, and it takes dex 6. I had the same problem, and it turned out it was 1 qt low.