There is was minding my own business driving down the road. I rolled down the rear two windows about half way and was subject to the WORST air flutter I have ever experienced. The wierd thing is... it is at the same frequency as the vibe that I have. So I tested it out on the freeway later on, it is the same, it varies with the speed. It flutters so bad that the passenger seat and just about everything in the truck rattles and vibrates at that frequency. Roll up the windows and it goes away... all but the normal slight vibe.
So, Here is a poll. I want to know if you have the Vibe, and if so what else you have. I would also like to hear whether you guys can duplicate what I am trying to explain.
My thought is this. What if the vibe is actually from air flutter outside the truck. More than likely this is assisting the vibe being found in the drivetrain. Thoughts?

 

I think it's just the way the outside of the truck is shaped, and the way the air moves over it. It actually mentions this phenomenon in the manual, how's that for quality engineering.

 

I know exactly what you are talking about with the air flutter, try rolling down 1 rear all the way at about 70, wow haven't felt percussion like that since Ted Nugent concert, but other than that I have no vibe problems at all.

 

Actually, its called wind buffeting. Your owners manual has a small paragraph about it and how to minimize it. Page 27 or 28 IIRC for the 03's