My driver side rear door sounded flimsy (almost like a rattle) when I closed it. I thought it was the pressure relief vents at first; but it was just a different sound. The sound my door made was like kicking a tin can. I finally got to looking at it this past weekend while trying to adjust my door gaps. When I went to adjust the latch on the rear door; the screws were just hand tight. I adjusted the latch inwards (by knocking it in with a brass bar), held it in, and tightened it down very securely. Guess what? The door makes a nice solid thud when I close it now...no more tin can sound.