I need help with a wierd squeak sound coming from the rear driver side wheel area. It doesnt do it all the time. On big bumps, it makes this squeak from back there. And it only sqeaks for a quick second. I can only hear it with the windows down. What i also noticed is that it does it if i swerve back and forth between a couple of lanes. I tried to replicate the sound while parked. I pushed up and down on the rear side and nothing. I pushed back and forth and nothing. I even tried to pull on the rear tire and nothing. Anybody have any ideas, its driving me up a wall.