2002 Pontiac Grand Am whats wrong

Sounds like a fuel line is plugged up or a line going to the gas tank is plugged. You need to first replace your fuel filter, if that doesnt help, have your fuel pump checked. If you buy cheap grade gas like at a Arco, they light to add water to their gas at a lot of them and also alot of gas at different places is oxygenated and you have to watch out for that stuff because it produces small black chunks of sediment (it looks like the same stuff you would see in a fish aquarium filter) that ends up plugging up your fuel filter and can cause your fuel pump to go out. When the sediment starts plugging up your filter to the point where your car starts screwing it, it will start acting like your car is doing now.