I reworked your stock TCM tune ... set the TCC slip RPM to zero for all gears (like a Corvette) given that you don't have AFM. I also increased the TCC pressure ramp in rate, and the TCC pressure (this is the only parameter changed that is not available in EFILive).
Hopefully this helps ...
Whatever it was, I think you got it! I have a little bit of low-speed off-throttle sensation that I didn't have before, but it beats the bucking that I was experiencing that appears to be gone!Originally Posted by Taz
Thank you!
You are very welcome ...
Work with D2216 (TCC Lock Pressure Ramp) to see if you can smooth out the low throttle sensation ... if you compare the tune I posted with your stock tune, you will see where I increased the slope of the pressure ramp ... perhaps a little too much in the lower torque output areas.
Good job
Yeah, I was having the same issues with my 6L90. tried looking it up everywhere to no avail... I even took it to my local shop (small town) and the guys there didn't know what to do with it...
So I went online to find a remanufactured 6L90 transmission and found this place https://reman-transmission.com/trans...des/?code=6L90 They sent it out and was at my door in a couple/few weeks time.. Then all I had to do was take it to the mechanic, have it installed and I was sittin pretty in my 3500 again
What did the reman shop find as the problem/cause...?
I had the same problem with my 6L90 transmission and couldn't find a solution anywhere. I even took it to my local shop, but they didn’t know how to fix it.
Then I found a remanufactured 6L90 transmission online at https://bestqualityautoparts.com/transmissions/ . They shipped it to me in a couple of weeks. Once it arrived, I took it to my mechanic, got it installed, and now my 3500 is running great again!
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