Hi everyone first time posting something I hope someone can help me out I have 07.5 gmc seria 6" lift 4" duel exhaust cold air intake efi tuning trans go Jr shift kit the problem is it stuck in first gear I drive it down the road and come back in reverse and put in drive and then it's stuck in third gear and going from reverse to neutral to drive it clunks real good it started the other day I was manual shifting came to a light to stop and the torque converter wouldn't unlock it keep trying to push me along and it would do the same in reverse I checked my codes and it pulled a p0700 and a p2724 the torque converter seems to be unlocked now but it won't shift in to any gear can anyone tell me what's going on or what I have to replace and i was also wondering if a tcm out of a 07 classic would work in my 07.5 new Bodie style thanks in advance for any help and feed back.

 

did you ever get this figured out?