I have a 96 ram 1500 ext cab 4x4 5 speed manual.. About a year ago i was rear ended and the car went under my truck and shoved the rear axle forward. Bent the driveshaft, busted the transfer case and bent the rear axle. I got a transfer case, driveshaft and rear axle from the local scrap yard new ujoints for the driveshaft and had i got a bad vibration from 60+(never tried going over 65 as the whole truck vibrated extremely bad) i ended up getting new tires and the vibration threw the truck is gone. But i do still have a vibration that i can feel distinctly in my shifter but the vibration is only at about 70-80 mph. If i accelerate past 80 mph and let off the gas for a second and then get back on the gas the vibration goes away until i drop down below 80. I have put about 6000 miles on my truck since the accident with no other issues. I get a very slight vibration in the shifter starting at 65 but it doesn't get bad till 70-80. Any suggestions?

 

Rotate your tires, and see if the vibration changes at all.

 

Make sure the u joint is centered in the yoke on the rear and no slop in the caps(side to side).

 

All the tires are new but have been rptated with no change. The u-joint on the end of the driveshaft that connects to the rear axle does have a slight movement sliding into the caps as if they arent held together tight enough but the c-clips are holding the caps in place. Do they make differnt thickness c-clips to pull the caps closer together and take up the play? The u-joint only came with the one set of c-clips

 

Just got finished with the same kind of symptom. My money is you need to have your drive shaft balanced. Put one or two hose clamps on the drive shaft and see if it effects the vibration any. If it does you need to get the ds balanced