Where is the fuel emergency shut off switch in a 2001 Chevrolet astro van?

There's no single, easily accessible fuel shutoff switch in a 2001 Chevrolet Astro van like you might find in some other vehicles. The fuel system relies on electronic controls and safety mechanisms to prevent fuel flow in the event of a crash. There's no manual switch to cut fuel in a standard Astro van. Disconnecting the battery is the closest equivalent for an emergency shut off, but this will also cut power to other essential systems.