Anyone else have this problem? I thought it might have been the passenger side mirror but know I'm not so sure. Sounds like something is loose and the only thing I have a removed and installed is the glovebox and I know that's not it.

 

I have the same issue. I thought there was something loose in the glovebox but I dont have anything in there to rattle. I think there may be some thing behind the glovebox and the fire wall but I cant seem to figure it out. Let me know if you ever figure anything out.