vibration from front passenger side

I've read a lot of different issues with vibrations. One or two that I've read sound similar to mine. I bought my second Taco brand new in 06. Shortly thereafter, in winter, I noticed a really obnoxious--and rather loud--vibration from the front passenger side when backing out of my garage. It rarely occured after pulling onto the street, and I only noticed it on especially cold days when the truck was cold. As winter temps crept in this year, I noticed it a lot more frequently, including after it warmed up. It seems to only happen at low RPMs, but will vibrate in any forward gear, reverse, nuetral, or in park. It can be heard outside, but is especially louder inside. I just lived with it before since it rarely did it. Now its quite often, and I'm ready to drive it off of a cliff! I was dumb enough to wait until I was 2 months out of the factory warranty before I got fed up enough with it. The extended warranty will only cover it if it is mechanical, and there is no way in He|_|_ I'm paying a couple hundred dollars or more on a truck with 2 years left on the lease. Does anyone have any idea what this 1 and only issue I've ever had with a Toyota is?

 

It's your air intake vibrating (where it meets the fender), there is a TSB for it or you could just but some extra foam padding where it meets the fender.