There isn't a readily accessible, easily identifiable "fuel cut-off switch" like you might find on some equipment or boats on a 1998 Chevy Blazer. Fuel delivery is controlled electronically and through the engine's computer system. Disconnecting the battery is the closest equivalent to a fuel cut-off, as it will shut down power to the fuel pump.
Therefore, the most reliable way to stop fuel flow is to disconnect the negative (-) battery cable. This is safer than tampering with fuel lines directly, which could result in fuel leaks and fire hazards.
