This may be a unique situation but after about 400 miles I began to hear a rattle coming from the front passenger side. Long story short they replaced a lock assembly for the front passenger door and it's gone. The noise has stopped... for now.

 

when it comes back..... take the door pannel off, and screw the door lock down onto it's post untill it's super snug, that should fix it again. had the same problems with mine...

 

A little blue Loctite (releasable kind) would keep it snug without potentially stripping it. I'll have to remember to do this when I get the door panels off.