I been getting a loud clunk that seems be to coming from the rear of the car. This would only happen once and generally not long after I start the car. I also noticed it happening once when I just sat into the car maybe about a minute after I closed the door and the car was still off (no radio either). Lately I been thinking it might be associated with my trunk because I think it only happens after I have used the trunk. I will pay attention to see if it happens if I do not use the trunk for a few days. Anyone have this issue?