I was recently going over a pass and as I was accelerating and taking a slight curve to the left I heard a very loud rattle coming from the passeger side. It sounded like it came from underneath the passenger seat maybe passenger footwell area. It was not from the inside of the cabin. Has anyone experienced this, know what it is, and if so, did you have it fixed? I have heard this twice; both times as I'm going uphill and accelrating while turning to the left.