I explained about a shudder a while back and nobody had a clue...I think that I may have explained it wrong. It is more of a vibration that starts in the rear and is predominant while in the 40-50mph range. If i feather the pedal light the vibration can be felt in the rear and right by the transfer case. Could it possibly be the u joint is shot and the yoke is seizing and light pedal pressure isn't enough for everything to rotate properly? also i have a clicking sound coming from the rear...that's usually a sign of u joint problems right? transmission shifts fine by the way. should I replace the u joint and yoke? If so is there a right up and where is the best place to get parts. Thank you all in advance...