2001 CHEVROLET IMPALA WAS INVOLVED IN A MINOR ACCIDENT AND AFTERWARDS THE TRANSMISSION WOULD NO LONGER FUNCTION.*MR THE TRANSMISSION HAD NO REVERSE AND HAD SHIFTING PROBLEMS. THE TECHNICIAN DETERMINED THAT THE THRUST BEARINGS BROKE AND DAMAGED THE SUN GEAR, INPUT CARRIER AND REACTION SUN GEAR. THE TECHNICIAN INDICATED THE THIS IS A COMMON PROBLEM WITH THIS TRANSMISSION AND THAT IT'S FAILURE WAS NOT RELATED TO THE ACCIDENT. THE MANUFACTURER ISSUED SERVICE BULLETINS REFERENCING TRANSMISSION PROBLEMS. *NM