Lately my car has started to get stuck in a gear and won't shift. This usually happens when I need it to shift into overdrive (like going up hills). After it won't shift it will DIE! I lose power steering and most power to the car, the only thing that stays on are the headlights. It is a '93 Buick Park Ave. I have checked the transmission fluid but I'm not sure if its the transmission or the computer in the car?! Any help would be great!