Re: 42RE Auto Box
How does the transmission fluid look like? Fluid level is ok?
Does your T-case have the position Neutral? If so, do you still hear the whine when its in N? When the jeep was on the hoist and you ran it, could you hear better where the noise was coming from?
My transmission was rebuild last year and the "specialist" had mounted a clutchpack wrongly. Didn´t make any noises, but the fluid color changed rapidly from the normal red to grey and even black after some time.
I don´t know the 42RE from inside, but i don´t think that you can make it any stronger then it already is. There are several bearings inside the transmission, but i don´t know if they will start making a whining sound. Those bearings are in a closed environment with lots of lubricant around and hardly show any wear. In the rear housing are some large ball bearings, which maybe could be a cause of whining, but first you have to be sure that its really coming from the transmission and not from the T-case. When you changed the T-case fluid, how was the fluid looking? No metal flakes on the magnetic plug?