I EXPERIENCED A 'ROLL AWAY' EVENT AFTER PUTTING THE VEHICLE IN PARK VIA THE GEAR KNOB SELECTOR WHILE THE ENGINE WAS RUNNING. AFTER ENGAGING THE VEHICLE IN PARK, OPENING THE DRIVER'S DOOR AND STEPPING OUTSIDE THE VEHICLE, IT ROLLED FORWARD CRASHING INTO ANOTHER VEHICLE SOME 30 FEET AHEAD. THE INITIAL POSITION OF THE VEHICLE WAS OUTSIDE A LARGE COMMERCIAL GARAGE. WHEN THE VEHICLE BECAME DISENGAGED FROM PARK, IT ROLLED FORWARD THROUGH THE GARAGE DOORS AND INTO THE GARAGE SPACE UNTIL CRASHING INTO ANOTHER VEHICLE (PARKED). AFTER REALIZING THE VEHICLE HAD DROPPED OUT OF PARK AND WAS MOVING FORWARD, I TRIED TO JUMP BACK INTO THE CAB TO APPLY THE BRAKES. I WAS UNABLE TO FULLY CATCH UP TO THE TRUCK, SLIPPED ON THE RUNNING BOARD/RAIL AND SLID UNDERNEATH THE MOVING VEHICLE -- INJURING MY ANKLE AND SHIN. FORTUNATELY, THE RAM WAS STOPPED JUST BEFORE RUNNING OVER MY LEGS BY THE PARKED VEHICLE AHEAD. I HAVE SECURITY SURVEILLANCE VIDEO OF THE INCIDENT. I HAVE SUBSTANTIAL DAMAGE TO THE VEHICLE'S FRONT CHROME BUMPER FROM THE CRASH AND NOW HAVE LITTLE CONFIDENCE THAT THE TRUCK IS SAFE TO OPERATE. IT SITS VIRTUALLY UNUSED SINCE THE INCIDENT. I WAS HOPING TO GET CLARITY, ASSURANCE, ALONG WITH A SAFETY FIX AND BODY REPAIR FROM THE MANUFACTURER SO THAT I COULD FEEL CONFIDENT IN DRIVING IT AGAIN. I HAVE CONTACTED FCA AND OPENING A FORMAL CASE ON THIS INCIDENT. THEIR WRITTEN RESPONSE WAS TO QUOTE THE OWNER'S MANUAL AND INDICATE THE PARK IS ONLY A SUPPLEMENT TO THE PARKING BR