I'm working on a 2010 Silverado 6.2l a6 camed with a 3200 circle d stall converter. I cannot make the converter stay locked in 5th and 6th gear No matter what I put in my TCC tables The TCM calls for unlock at random TPS positions . There has to be something corrupted in the TCM program. I was going to have the dealer Reprogram to stock so I have a fresh platform to work off of. I took it to the dealer today and they were unable to reprogram it due to the fact that it showed it having up-to-date calibration in it and there software wouldn't let them reprogram it. So at this point I have been told the only thing I can do is replace the TCM. Does anyone have any ideas how I can get my TCM back to stock form Short of having to replace the entire module? Could I get a tune file from the repository with the correct OS and do a write entire on to tcm? If I did would it even be worth trying? I did try to write entire with my own stock file and it didn't change anything.