THE SUPPORT STRUTS FOR THE TAILGATE FAILED. THE DOOR CAME CRASHING DOWN ON MOTHER AND DAUGHTER. MOTHER PUSHED DAUGHTER OUT OF WAY BUT THE DOOR CAUGHT THE MOTHER ON THE RIGHT ARM. UPPER ARM RECEIVED A DEEP BRUISE 1 INCH IN DIAMETER. THE DOOR WORKED WELL PRIOR TO THIS. THERE HAD BEEN NO WARNING LIKE SLOW TO LIFT OR HARD TO LIFT OPEN (OR TO CLOSE). *JS