I've been trying to identify the cause for weeks. But no luck. Hopefully someone has had a similar experience and fixed it before it broke. I have this growl type vibration that is felt once i get to 60 MPH...the vibration is strongest between 60 - 70...55 it's not too bad and 70 and beyond it's not too bad. I feel the vibe in the floor board and gas peddle. I let off the throttle and it goes away. It does it in O/D and third at the speeds mentioned above. This started after i had to use the winch to get out of a mud hole...I'm thinking i worked the tranny trying to rock out before goin to the winch...Just looking for folks opinions before i start breakin into things lookin for problems that aren't there. Anyone have a similar experience???