Hi DMK, I think I have the same thing, it sounds like a cable stretching to me. I was at the dealer for an engine service light and the Service Manager heard it "herself" and came back and said it was some sort of a bearing on the the leftside went bad, needed to order it and then have the car aligned. The part hasn't come in yet or they haven't called me yet but I will call them tomorrow and report back their findings once replaced.