I have noticed an annoying vibe as I come up through 67 mph under power.
I coasted the truck down a long hill in neutral going between 65 and 70 mph and there was no vibe.
Is this the same drivetrain vibe I keep reading about or something different?
Seems that the ones I read about are all the time, at that speed, not just under power?

The Domie

 

Nope. That's normal engine buzz. I wish that's all my '03 had.

 

moving this to the front.

 

I rotated my tires a couple of weeks ago. This was the first time that I actually did the "Modified X" instead of just switching fronts to rears and vice-versa. Immediately I got a vibration at 70 mph that I never had before. I switched the two front tires around and the vibration stopped. Go figure.......

 

I've got that vibe, underpower from approx 55 - 70 MPH especially if it locks up in OD.

I believe it has to do with the rear carrier bearing and position/angle of the u-joints. I had the TSB for shudder on take off done, well that was cured but the vibe moved to that 55 - 70 MPH range now.

I'm going to look into a custom solution for the driveshaft because I know any dealer I go to will be incapable of fixing and/or diagnosing this issue. It's not terrible but it is noticeable.

Eric