1. Identify your engine: Look for an engine ID tag usually located on the engine block itself. This will tell you the specific engine (e.g., 350 cubic inch small-block Chevy, 400 cubic inch small-block Chevy, etc.).
2. Consult a repair manual: Once you know your engine, get a repair manual specific to your 1979 GMC Vandura and that engine. This is the most reliable way to pinpoint the fuel filter location. Chilton and Haynes manuals are readily available online and at auto parts stores.
3. Look in common areas: While the exact location depends on the engine and any modifications, common places for fuel filters on vehicles of that era include:
* On the frame rail: Near the fuel tank.
* On the engine: Somewhere near the fuel pump.
* In the engine compartment: Often near the carburetor or fuel injection components (though less likely on a 1979).
Without knowing the specific engine, giving a precise location is impossible. Using the steps above will significantly increase your chances of finding it quickly and safely.
