SINCE I PURCHSED THIS TRUCK IT HAS BEEN TO THE 3 FORD GARAGES. AT FIRST I HAD A VIBRATION IN 3 RD GEAR AND 7TH. FINALLY AFTER SPENDING A LOT OF MONEY A FORD SERVICE SAID IT WAS THE DRIVE SHAFT. THE VIBRATION LESSONED. FOR THE PAST 6 MONTHS THE TRANSMISSION PAUSES BETWEEN SHIFTS MAKING DANGROUS WHEN YOUR MOVING THEN THE TRUCK PAUSES FOR A COUPLE OF SECONDS. FIRST YOU COULD GRT HIT FROM THE REAR. SECOND IF YOUR TURING ONTO A LANE AND IT PAUSES AS SOMEONE IS COMING. POSSIBLE ACCIDENT.