PARKED VEHICLE IN SLOPED PARKING LOT LEFT VEHICLE RUNNING WALKED BEHIND JEEP WITH TALIGATE LIFTED TO REMOVE WET ITEMS FROM JEEP. NOTICED THE JEEP WAS ROLLING BACKWARDS MY QUICK REACTION WAS TO JUMP BACK IN DRIVERS SEAT TO TURN OFF CAR. WHILE DOING THIS THE JEEP PUSHED ME BACKWARDS FLAT ON MY BACK AND BROKE MY T11 AND T12 ON 9-14-2019. THIS RESULTED IN SURGERY AND STRESS WHILE NOT BEING ABLE TO WORK. I HAVE RESEARCHED THIS MODEL OF JEEP AND APPEARS THERE WAS POWER TRAIN ISSUES IN 2017 AND COULD BE CARRIED OVER INTO 2018 MODELS. PLEASE ADVISE