I have a 2001 Grand Prix GT and out of nowhere my rear left tire has locked up only when I put the car in drive. I can drive it in reverse no problem and it rolls in neutral. But when I put it in drive it freezes up and only my rear left tire is frozen. Def a brake prob but I dont know it its the parking brake or not. I can drive 40 feet in reverse then drive 40 feet in drive til it freezes up. Or drive 4 feet in reverse and get to move 4 feet in drive before the tire locks up. Thanks for any help.