* Primary Fuel Filter: This is usually located on the passenger side frame rail, near the fuel tank. It's a larger filter.
* Secondary Fuel Filter (Water Separator): This is also typically located on the passenger side frame rail, but often slightly closer to the engine than the primary filter. It's designed to separate water from the fuel.
Important Note: The exact location might vary slightly depending on specific options and modifications to the truck. It's always best to consult a repair manual specific to your truck's year, engine, and trim level for the precise location. Using a repair manual with diagrams will give you the clearest answer. You can often find these manuals online or at auto parts stores.
