* On the frame rail: This is the more common location. Look along the frame rail, usually near the fuel tank, but possibly closer to the engine. It will be a cylindrical canister, often with fuel lines connected.
* In the fuel tank: Less common, but possible on some 1998 S-10s. In this case, you won't be able to access it without dropping the fuel tank.
To find it definitively:
1. Consult your owner's manual: This is the best resource. It will show a diagram of your vehicle's fuel system.
2. Use a repair manual: A Haynes or Chilton repair manual specific to your 1998 S-10 will have detailed diagrams and instructions.
3. Search online: Search for "[your engine type] 1998 S-10 fuel filter location" on Google Images. Seeing pictures will greatly help you identify it. (Make sure to specify the engine, e.g., "4.3L V6" or "2.2L 4-cylinder").
Remember to be careful when working around fuel lines and fuel. Always disconnect the battery's negative terminal before working on the fuel system. If you are unsure, take your vehicle to a qualified mechanic.
