I know this may seem like a long shot, and it may sound stupid, but I have been thinking about this vibration problem most are having. Some have said that replacing universals help, some have had drive line balanced,or replaced, or midship shimmed. I think that if you could rotate the whole axle a few degrees to relieve some of the stress,and angle on the universals , could solve a lot of the problems. I ask this because I work for a major truck manufacturer and I have seen problems when you are building a fleet of trucks and they are not all the same ie.. day cab, or sleeper cab..etc, but because they are in the same fleet they do not change the specs of each one. What I'm am trying to say is if or trucks come down the assembly line and if a quad cab is built to the same specs as a standard cab etc.. the drive line angle for a standard cab will not be the same for a quad cab or mega cab. The chassis configuration is not the same, or maybe they are using the same specs from an earlier year model? I may be wrong about the whole idea of rotating the axle, but it seems very logical considering the number of universals gone bad. Just my .02

 

Are you talking about pulling the driveshaft, and then sliding off the splines and then re installing it a couple of spines over? It's worth a shot.

 

HOW BAD is this vibe that everyone is talking about? is it really noticable like shakes the entire cab. or just a little bit of a vibration, cause at about 60 to 70 mph i get a little noise that possibly could be a vibe, but i am not sure if it is. Just wanted to know if the vibe i have is the same as the vibe everyone eles is talking about. but it seems like by reading some of these posts it's a lot worse than what i have?

 

I have thought about that also. I have had that happen on a Toyota I have ( one piece shaft). In all reallity it should not make a difference as long as your yokes lined up the same on each end, but it did on my Toyota. What I was talking about in my post was taking the u-bolts loose on the axle and rotating the whole axle up a few degrees to reduce the angle on the yokes, I'm not talking a whole lot , but a few degrees would make a difference I think.This may not be the answer ,but I can see if when the truck was built that if the axle was not installed correctly for the proper driveshaft angle. I work in a place that builds truck just on a larger scale,and I see who and how these things are built, and it would not suprise me one bit , what we would find wrong . The old theory is true...don't buy a truck built on monday or friday.