Brandie, One of 4 things happen. 1. Brake wheel cylinder leaked fluid and when you applied brakes it locked up. 2. Brakes got real hot for some reason and expanded which pushed it up against the drum and locked it up. ( Usually OK after they cool down) 3. Brake return spring either broke or came disconnected and brake is up against the drum. 4. Wheel cylinder is sticking in closed position which applies brake to that wheel. Ron Allyn Swartley |