The fuel filter on a 1997 Chevy S10 is located
in the fuel line, usually near the fuel pump, under the vehicle. It's not easily accessible without getting under the truck. You'll likely need to locate the fuel pump (often near the fuel tank) and then trace the fuel line back towards the engine; the filter will be somewhere along that line.
Because its location can vary slightly depending on engine type and trim level, referring to a repair manual specific to your 1997 Chevy S10 is highly recommended. A repair manual with diagrams will show you the exact location. You can find these online or at auto parts stores.
