4l60e wont shift out of 2nd at Full Throttle please look at my tune
11-10-2015, 04:03 PM
#1
4l60e wont shift out of 2nd at Full Throttle please look at my tune Guys been through the "ringer" buying this 4th Gen t56 shell and swapping in this 6.0l and 4l60e combo...finally figured out that the ECU pin 42 was grounded internally causing TCC to be engaged all the time...Put my tune on a different 0411 and boom works flawless EXCEPT it will not shift out of 2nd at FULL throttle...I moved the shift mph and rpms very low and it still runs up to redline...but shifts great and part throttle....
Please look over my tune and make sure im not missing something...
Please look over my tune and make sure im not missing something...
11-10-2015, 05:09 PM
#2
Are you sure the trans is good? I had one I was working onand no matter what I did even tried a know good tune and a stock tune and it still would shift under WOT for the 1-2 2-3 or 3-4 shifts told him it must be overpowering the forward sprag. Only thing I could come up with would shift fine everywhere else but wot.