2000 Tundra V8 2wd Trans Problem (1 Viewer)

[CJ Fisher]

Father in-laws truck sat for a year. 2000 Tundra 4x2 V8. 218,000 mikes. I put a new battery in it and drove it around the block. When i pulled back in the driveway it felt like the rear end was binding up. The truck would go forward fine but felt like it was locked up on reverse. Like it was going into park and reverse at the same time. I gave it a little too much throttle and BANG! it went into reverse and spun the tires. Now the trans sounds like marbles in reverse but fine forward. Did the Parking Prowl get stuck and I broke it? I towed it home and put it on the lift. Rear end sounds fine but jacked up and turning the driveshaft its smooth going forward (at the trans) but turning it backwards sounds like marbles near the tail shaft. Help....