VEHICLE WAS RUNNING WITH ENGINE IDLING AND GEARSHIFT IN PARK, I GOT OUT OF JEEP AND THEN HEARD A LOUD CLUNK. THE JEEP THEN BEGAN ROLLING BACKWARDS DOWNHILL UNTIL IT HIT A FENCE WHICH CAUSED IT TO STOP. I TOOK THE VEHICLE TO MCKEAN'S JEEP EAGLE IN PITTSBURGH, PA WHO TOLD ME THAT THE REAR AXLE HAD FAILED AND NEEDED TO BE REPLACED. MC KEAN'S SUBSEQUENTLY CHARGES ME $2,500 TO REPAIR THE VEHICLE.