Originally Posted by MR.nismo

Yes, I found where the noise is coming from. Last week I was driving from Charlotte to Savannah and the noise was driving me crazy. It was non stop and louder than my factory stereo. I got home checked the trunk and when I pulled the trunk mats....... there were three squirrels having sex and tossing acorns all over the trunk.
Now seriously, maybe (and I had to do it) adjust the trunk latch. The u-bolt inside the trunk. I had to repositioned by loosing the two bolts and pushing down on it as far as it would let me. Now the hatch closes more "solid" and there is no more rattle. Careful pulling the plastic liner, as not to tear the clips apart.