I would check your rear shock mounts to be sure the rubber hasn't pushed thru the mount or is just worn out and the top of the shock is just banging around in the mount when you go over a bump. Check both sides. see photo's...
1. Removed the 2 access hole covers.
2. Look in between the 2 shock mount nuts to view the rubber bushing and the top of the shock strut.... push up and down on the car to make sure the rubber is not loose in it's mount allowing the top of the shock to hit the metal above it.
Last edited by socks210; 01-02-2013 at 04:50 AM.