SC2 shifts hard between 3rd and 4th
I have a 2004 Saturn SC2 with the 4 speed automatic. Just recently, I have experienced problems with the car downshifting when going up a hill then immediately shifting back up when the rpms come up causing the car to buck violently. I have no engine codes in and the car shifts fine otherwise. It also shifts normally when under full throttle. IF ANYONE HAS ANY INFO ON THIS PLEASE CONTACT ME. THANKS.