2005 CHEVROLET IMPALA JUMPED OUT OF PARK AND ROLLED BACKWARDS. *MR THE IMPACT CAUSED THE GARAGE DOOR TO POP OPEN AND CRASH BACK DOWN AND TRAPPING THE CONSUMER INSIDE OF THE GARAGE. THE CONSUMER SUGGESTED THAT GM SHOULD TAKE RESPONSIBILITY FOR THE DEFECTIVE VEHICLE. THE VEHICLE ALSO STALLED WHEN SHIFTING TO REVERSE FROM PARK, THE VEHICLE HESITATED TO START THEREFORE THE CONSUMER HAD TO HOLD THE KEY FROM SEVERAL SECONDS WHILE THE STARTER ATTEMPTED TO TURN OVER AND THE VEHICLE CONTINUED TO GRIND. *SC