* In the fuel tank: This is the *most common* location for 2004 Silverados. If this is the case, you won't be able to access it without dropping the fuel tank.
* On the frame rail: Less common, but possible, particularly with certain engine options. This would involve accessing it from underneath the truck.
To find out definitively, you need to:
1. Check your owner's manual: This is the best source of information. It will specify the location for your particular Silverado's engine.
2. Look online: Search for "[Your Silverado's Engine] fuel filter location" adding details like the engine size (e.g., 4.3L, 4.8L, 5.3L, 6.0L, etc.) for more precise results. Many forums and online repair manuals will have pictures and instructions.
3. Consult a repair shop: A mechanic can easily identify the location.
Without knowing your specific engine, I cannot give you a precise location. Attempting to find it without proper knowledge could lead to difficulties or damage.
