I solved the problem.
I changed the transmission back to the original one with the tail housing from the used one, and fully rebuilt the transfer case. I also changed the NBSU.
Should've thought of this earlier!
I have two Allison 1000 transmissions, one with a broken tail housing. Can I swap the tail housings complete from one to the other? What would I want to consider if I do this? I will be doing this with the transmissions removed.
I think it may be the C4 apply piston after reading other posts.
I checked the transfer case sensor and tone wheel and all is good. I swapped the turbine sensor from my old transmission. The problem is still intermittent, usually happens once every 200 miles at this point with fairly...
Mike, what about the fact that I get both P0732 and P0776? Does that make one scenario more likely than the other? The transmission normally shifts pretty smoothly so I'm not sure if I would be able to tell anything about the C4 condition without taking stuff apart.
I recently purchased a used truck and discovered a major problem after driving it 140 miles home. I saw a small oil leak in the driveway and this led to me discovering that the transfer case was only held on by one bolt. The tail extension housing on the transmission had cracked around the...