no the car is stopped and has no trouble code. That is the only time it does it. When the car is stopped and you put it in r but dont move then pput it in d without moving it slams hard. If u shift from p directly into d no problem. if u put it in r back up, stop then put it in d minor slam. But if u put it in r then n for a second then d there is no problem. The cars is not moving at any point. Also I geussed as to which spring went where on the od and ud pistons, the stock 1's not the 1's in the kit, cause 1 was longer and less firm.