I bought a used car from a car dealership and have had it a little under a month. It worked fine til today when I was at the store. I got in the car and it wouldn't turn over to start. It would start, then die just as fast. It wouldn't stay on. Anyways, I had it towed home and had some guys look at it. They said they thought maybe it was our fuel pump and that it wasn't pumping enough gas into the engine to turn over and that we may need a new one. First of all, what could have happened and how much do fuel pumps approximately cost for '96 Pontiac Grand Am's?