TL*THE CONTACT OWNS A 2008 FORD EXPEDITION. THE CONTACT STATED THAT THE TRANSMISSION MADE A KNOCKING NOISE AND WHEN TRAVELING AT LOW SPEEDS AND LUNGED FORWARD. WHILE SLOWING DOWN TO 15 MPH TO MAKE A RIGHT TURN, THE VEHICLE JERKED FORWARD AND WHEN DRIVING STRAIGHT AND SLOWING DOWN, IT WOULD CONTINUE TO JERK AFTER AN ATTEMPT TO ACCELERATE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE PLATE ASSEMBLY/DRIVE PLATE AND THE SCREEN ASSEMBLY WERE REPLACED. THE PROBLEM WAS NOT REMEDIED BY THE REPAIRS. THE CONTACT WAS DRIVING IN REVERSE OUT OF THE GARAGE WHEN THE VEHICLE BEGAN PULLING IN REVERSE. THE VEHICLE ALSO PULLED BACK 6 FEET WHEN IN THE PARK POSITION. WHEN THE TOW TRUCK ARRIVED, THE VEHICLE EXHIBITED THE IDENTICAL FAILURE WHILE IT WAS IN PARK. THE DEALER INFORMED THE CONTACT THAT THEY COULD NOT DUPLICATE THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 20,035. THE CURRENT MILEAGE WAS APPROXIMATELY 35,000.