Originally Posted by bbmyers
1) I've read about people unbolting the body of the truck to get to the top tranny bolts. Not needed correct?
2) It was unclear if the y pipe needs to be removed. I'm thinking a whole other can-o-worms gets opened there getting the y pipe off the manifolds.
3) Remove the tranny with or without the transfer case attached?
Here's what I can share with you from my experience:
I pulled the transmission from my wife's '93 Jimmy last winter. I didn't jack the body off the frame although I've heard that makes life much easier. I jacked the front of the engine up to tip the entire powertrain down for easier access to the bolts. I put it in the same way.
Remove the Y-pipe. It's in the way of everything if you leave it. Not having it there makes it far easier to get to things like the cooler lines and lower bellhousing bolts.
Take the transfer case off the back of the transmission. It makes removing the transmission much, much easier.
Also, I would have a new transmission mount ready to install. In my experience the transmission mount always has at least one stud broken. It's best to replace it while you have the cross member out of the truck.