When i drive my dak down the highway i have noticed a very noticeable vibration over 60 when only my foot is on the gas.. if i let off it disappears but the moment i put my foot back on the gas it comes back. I was thinking maybe the universal joints on the drive shaft have gone? Not sure though.. Any thoughts would be appreciated.

 

any ideas?

 

I had a horrible vibration that about shook me off the road all of a sudden. Turned out it was just the tire balance. Couldn't find any missing weights, was strange it developed so quickly. Could be several things though as you mentioned, good luck.