I had this rattle for awhile now that I always thought it came from the trunk but it turns out that it came from the rear seat. The upper piece has those hooks that you have to hook on the back were making weird rattling noise when you go over bumps. You can imitate the rattle by banging on the back seat below where the headrest are and you can hear what im taking about. Im going to remove the seat and wrap those hooks up with duct tape so they sont have metal to metal contact. hope this helps if you have the same problem.

 

Good i think thats where one of my rattles have been coming from cause i can here it when i lean into the back set to get something or when someone sits in the back seat. Interesting, good post.

Bruce

 

yep, I got rid of that rattle completely by removing the rear upper part and duct taping the metal hooks that are on the sheet metal and also wrapping tape around the 3 metal wire loops that are behind the cushions. now I gotta find this little rattle thats somewhere in the trunk latch mechanism