2004 GRAND CHEROKEE ROLLED BACKWARDS WHILE THE SHIFT LEVER WAS IN PARK. THE CONSUMER THINK THE PROBLEM IS WITH THE TRANSMISSION. *TS WHEN THE VEHICLE ROLLED BACKWARDS THE DRIVER'S DOOR CRASHED INTO THE MIDDLE SECTION OF THE CONSUMER'S GARAGE DOORS. THE DRIVER'S DOOR BUCKLED AND THE WINDOW SHATTERED. *NM