I just purchased an 04 1 ton 4x4 quad cab. It has a driveline vibration from 60 on up. Any sujjestions.

 

My 94 did the same thing and after 5000.00 dollars in warrenty work to figure it out a dodge dealer in california told the guys working on mine that the vibration is a common characteristic of the 12v cummins. mine vibrated between 1200 and 1400 rpms then just quit, its not you trans its the engine but you only feel it when you are under load or accelerating. hope this helps