So I was going down the road tonight on a long super smooth patch, so everything was completely silent. Had the A/C set on 72 auto, nice and cool...and it was probably on one of the lowest settings...yet out of somewhere in the middle you could hear something not quite loud, but noticeable...a sort of pattern of clicking, like a fan slightly off balance tapping the side of the shroud, or something in the vent flickering from side to side....I inspected what I could and found nothing that would cause it...but it only comes about when the air flow is low... Does anyone else have this problem? Or maybe know exactly where to look to stop it? It sort of lowers the whole quality feel of the vehicle with a small tapping noise like that.