I know this is a common problem, but I might have a new twist to it. Most of the rattles I get have always been around the door handle assembly. As I was trying to figure out new ways to find and stop the rattles, I jiggled the door lock assembly and voila - it's very loose, and makes a lot of noise!!. I can bounce the door look around pretty good and it's the same sound I get going over bumps. Anyone know of a way to 'tighten' up the door lock slide? I was surprised it had so much play in it.