NHTSA Complaint #11171347 — 2017 RAM 1500

WHILE AT THE BOAT RAMP, PULLING A BOAT OUT OF THE WATER. THE TRUCK WAS ON AN INCLINE. THE BOAT WAS ABOUT 1200 - 1500 POUNDS TOTAL. THE TRUCK WAS IN PARK, PARKING BRAKE ENGAGED. SITTING IN THE CAB WITH THE SEAT BELT ON AND THE DOOR AJAR, PLACING THE TRANSMISSION IN DRIVE, AFTER THE TRANSMISSION ENGAGED I INCREASED THE RPM SLIGHTLY WITH THE GAS PEDAL AND THEN RELEASED THE PARKING BRAKE. THIS HAS ALWAYS BEEN THE NORMAL PROCEDURE THAT PREVENTS THE RIG FROM ROLLING BACKWARD. WHEN I DID THIS AND ADDED MORE THROTTLE THE TRUCK STARTED TO MOVE FORWARD BUT THEN QUICKLY DISENGAGED FROM PARK TO N, THE TRUCK STARTED TO ROLL BACKWARDS AND THE RPM INCREASED. I WAS ABLE TO APPLY THE BRAKE AND STOP. THIS REPEATED SEVERAL TIMES. THE INSTRUMENT CLUSTER FLASHED A WARNING THAT THE TRUCK WAS NOT IN PARK. I BELIEVE THERE IS A FLAW IN THE AUTO PARK FEATURE. IT IS REPEATABLE. INCLINE, DOOR AJAR, BELT ON, FROM PARK TO DRIVE. ON FLAT GROUND I CAN NOT DUPLICATE.