easier said than done.
alot of things in the way, clearance is non-existant. teh area to work in is in front of the frame rail, not behind it (where the spare is).
This was actually my plan, i crawled under there, and said nope. paid $900 to a shop for labor and have 0 regrets. the time, hassle, and rusty bolts (soon to break) i would have been battling was well worth the money paid.
I haven't crawled under there, so I have no idea. I just stopped using mine when it went. Saved myself $900, . If I do tackle this in the future, I'll try to document it with as minimal work as possible.