my 04 makes a chattering feeling when starting from a dead stop turning left up until i hit about 15mi pr hr you can feel it in the wheel it wont do it with the tires going strt and i havnt felt it making a right hand turn, if im tooling down the road and slow down to 5mi per hr and make a left turn it wont do it its only from a dead stop, also about a week ago I was towing a 6000lb trailer with a 7000lb ford tractor on it and it did it when i made just a very slight left turn and was rolling not from a dead stop, i can stomp down on it going strait and it wont do it, at first I thought it was the tranny slipping thats kinda what it feels like. can anyone send me off in the right direction, ive got tools in hand. thanks