Greetings, I must tell a short story about the events that have led me to this great forum. I had my freez plugs replaced, all of them. There are 2 plugs that require the removal of drive shaft to replace. Vehicle was returned. When I went to drive the truck when I reach a speed of around 40-50 the truck vibrated pretty good. Now, I also noticed that if I decreased or increased the speed the vibration would stop. I relayed this information to the guy who did the work and he said something about having to turn the drive shaft 180%. So he did that, still have the problem.
Only because the truck didn't have this problem before haveing the work done, I feel it has something to do with drive shaft.