My TL has been exibiting some troubling behavior recently and before I take it to the dealer and get reamed I'd like to know if anyone has had a similar problem and what the diagnosis and repair costs might be. When I accelerate quickly from forty or so to highway speeds sometimes the car does not shift smoothly. I will seem to hesitate and the shift with a noticeable jerk. I can't believe this is not causing stress on the drive train. It doesn't seem to happen or I don't recall feeling it if I accelerate slowly or decelarate.