rear end help!!!

[wiblueboy]

I have a 2000 4x4 7.3 regular cab long box. I was backing out of my parking spot today and hit my brakes kinda hard and all of the sudden my truck would not move. I put it in drive and really stepped on it and something towards the rear end would clunk and id only move an inch. When I put it in neutral me and 2 friends tried to push it and it wouldn't budge an inch. Called my dad and he said try it in 4x4. So I put it in 4 wheel drive and stepped on it. Didn't want to move but then something in the rear end broke free so I could drive again. When this happened a buddy said my leaf springs were bouncing like no other. It moves in 2 wheel drive and 4x4. It feels like something is catching while the wheels are turning and there's a LOUD scream when I'm moving. Got it home and parked it. Talked to some people and no one is exactly sure what it is. Some have said suspension, trans, transfer case, differential and brakes. Breaks don't smell, not leaking any fluids and drive shaft is firm like normal. Does anyone have any idea what the heck the problem is???

[NoRalPh]

Take the cover off the diff and have a look inside...

I suspect it gonna be Ugly

[Turbostang500]

Doesnt sound like it will be pretty but the loud scream is not characteristic of something inside the diff.
jack it up and see how things spin. Then pull the driveshaft and spin again. Now, pull the tires, rear calipers, brackets, and rotors. There is a parking brake inside the hub. It might be there. Just gonna have to start somewhere and look for it.

[lakailimited06]

i agree with the above comments..pull the rear diff cover and look for any pieces missing off the ring/pinion gear or the spider gears/LSD clutch packs etc whatever the rear diff has. i would also drain the tcase fluid and see if there are any metal pieces/filings in that as well.

[wiblueboy]

Got it all fixed. Piston in rear driver side brake busted and locked it all up