You'll need to consult your owner's manual or a wiring diagram to find the specific fuse number and location. The fuse box is usually located under the hood or inside the vehicle, often under the dashboard. The owner's manual will provide a fuse box diagram showing which fuse is related to the fuel pump circuit (often labeled as "fuel pump" or something similar, but might be part of a larger circuit). If you don't have an owner's manual, you can often find a digital version online by searching for "[year] Chevy Astro owner's manual."
