Where is the fuel cutoff switch located in a 1988 Chevrolet Astro Van?

There isn't a readily accessible, easily identifiable "fuel cutoff switch" like you might find in some modern vehicles on a 1988 Chevrolet Astro van. Fuel shut-off in these older vehicles is typically achieved by either:

* Manually disconnecting the fuel pump's electrical connection: This requires some mechanical knowledge and involves locating the fuel pump relay or the wiring harness leading to the fuel pump itself. This isn't a switch in a typical sense.

* Severing the fuel line (emergency only): This is a drastic measure and should only be used in extreme emergencies like a fire, as it requires specialized tools and is messy.

There's no factory-installed, easily reachable switch for cutting off fuel flow in the 1988 Astro van like some later models might have added as an aftermarket feature. If you need a quick fuel shutoff for security purposes, you'd have to install one aftermarket.