ok, i have a 2012 ram express with only 400 miles and already have a rattle on the passenger side, only on bumps. its not the seat belt, and its not the seat. does it with window up or down, and sounds like its coming from the corner of the dash/or door panel, but i cant really tell. Anyone have this rattle yet? id rather have the rear bumper falling off than have a rattle i cant find. SMH!