check this place out for fuel pumps. It was the cheapest place by far for my fuel tank and they do sell chevy fuel pumps too.
http://replacement.autopartswarehous...se/wizard.jsp?
But do a quick search on google first there might be a better price yet
If you ask Autozone they might match the lowest price, allowing you to do the job instantly
Fuel pumps are kinda a pain in your truck, but not hard to replace.
Just raise the box, or drop the gas tank.
Replace the fuel filter while your at it
Most people prefer raising the box, and after your first job you'll probably be able to just tilt it knowing where everything is