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So this may be a stupid question, but.... My car started life as a MT82 then I went to a Mag XL now I'm at a built 6R80. I installed it earlier this year and ever since I installed it the car is REALLY hard to push around when in neutral. My question is, is it normal for a built 6R80 (shaft and...

Hey guys, As stated my PCM looks to have failed. I have found a few for sale but I can't seem to find much info on the different part numbers. Do they matter, are they interchangeable, can the dealer flash any PCM p/n to the correct as-built? If anyone has gone through a change or has knowledge...