I hear this high pitched whistle when I'm driving. I dont have a clue what it is. I hear it when I am driving in first and second gear, and reverse. The whistle happens most often and its most noticible when Im accelerating, braking, and turning at low speeds for example in parking lots. It might be just the brakes, but I really don't think it is. I am going to have to take it in and have it looked at soon, but I'd like to be prepared with an idea of whats wrong and what it will cost. Any thoughts/info would be appreciated.