1. Identify your engine: Check your vehicle's documentation (owner's manual or the sticker on the driver's side doorjamb) to determine the exact engine type (e.g., 4.3L, 4.8L, 5.3L, 6.0L).
2. Consult a repair manual: Once you know the engine, find a repair manual specific to your Silverado's year and engine. This manual will provide a diagram showing the fuel filter's exact location. You can find these manuals online (some are free, others are paid) or at auto parts stores.
3. Look near the fuel tank: In general, the fuel filter on most Silverados is located somewhere near the fuel tank, often along the frame rail. However, without knowing the specific engine, a more precise location can't be given.
Without knowing your engine size, any more specific instructions would be unreliable and potentially unsafe. Always consult your owner's manual or a repair manual before attempting any repairs.