Just FYI, anyone having a squeek and or rattle which seems to come from the passenger C-pillar area (if your driving) or from the read over your left shoulder (if you're the passenger)...I have the solution. I found that if you put down the back seat you will see a plastic tab with a bolt through it. I believe it is the housing for the rear speakers and amplifiers. I would get a terrible sound if I pressed on this tab because of a small nipple of plastic that protrodes fro the back of the tab through a hold in the metal the tab is bolted to. You'll know what I mean when you see it. If your's squeeks or sounds like a rattle when you press it with your finger then this sound will happen when the top of the back seat moves against this plastic tab. Took me two weeks to find this, I though my passenger belt tensioner on the rear C-pillar was rattling. Hope this helps if anyone has the same. If not, then maybe it will help in the future. :smile: