* In the fuel tank: This is more common. You won't be able to see or easily access it without dropping the fuel tank.
* On the frame rail, near the fuel pump: Less common, but possible. This would be closer to the engine, somewhere along the frame rail. You'd likely see a cylindrical canister attached to fuel lines.
To find it definitively:
1. Consult your owner's manual: This is the best source. It will have a diagram showing the location of the fuel filter.
2. Use a repair manual: A Haynes or Chilton manual for your specific year and engine will have detailed diagrams and instructions.
3. Search online: A web search for "1996 Chevy S-10 fuel filter location [engine size]" will likely yield images and forum posts from others who have done this repair. Be sure to specify your engine size (e.g., 2.2L, 4.3L).
Without knowing your engine size, I cannot give a more precise location. Remember that working with fuel lines involves potential fire hazards. Take appropriate safety precautions.
