I'm having a lot of difficulty rolling my pickup around the garage. I've gone through the front and rear wheels packing bearings and working the brakes. When in the air, the wheels roll fine. I did notice when I roll one back wheel the other one rotates the opposite direction. Some kind of limited slip reaend ???? When on the ground, I can't push or pull it by myself. The trans is in neutral because when I pull it around with another vehicle the engine doesn't roll over. Any suggestions on what to do would be appreciated.