There was a link before with people that had rattling noise in the rear of their car. I had checked everything that was suggested, but still had a rattle. I finally took it to a honda/acura shop and it took them awhile, but they found it. One thing to check if you have a rattle is the sway bar in the back. They told me the bolts looked tight, but when they actually grabbed the bar, it moved. I hope this helps someone out..

 

thanks. i'll see if mine does that too.