The dealers all seem to do the same thing to solve the problem, in most cases unsuccessfully. They do the drive train realignment, pinion angle/caster adjustment to try to get the front shaft into better alignment. Essentially, misaligning the truck and creating a new problem to solve another one.
Wstoops,
As you know, I am with you on this one. I think it is not an inherent condition with a diesel powered Ram as some say. It is nothing more than poor engineering, taking the cheap way out instead of building it right to begin with.
Get a hose clamp and put it on the front shaft
Sag2, a DC tech did this a month or so ago when he tried to fix the vibe. Didn't work. He indexed the shaft which seemed to do a little better in combination with a caster adjust. Like WStoops said, solve one problem by creating another. Not acceptable.
With the shaft out, no vibe.
My personal belief is that the vibe is a result of several orders coming together at speed. Some engine, some transmission, some transfer case, some shaft and God knows what else.
As I have oft repeated, I don't have so much of an issue with the vibration itself, my complaint lies in the fact that DC doesn't care to find an acceptable fix. Hanging weights off the frame is a stopgap measure if you ask me. Find the source (s) of the vibes and engineer them out!
Steve