* Under the hood in the fuse/relay box: This is the most common location. The fuse box is typically situated near the battery. Open the fuse box cover and consult the diagram printed inside the lid or on the inside of the cover to identify the fuel pump relay. Look for a relay that's labeled appropriately, or consult a wiring diagram specific to your engine.
* Under the dashboard: Less common, but possible. This would involve removing a panel or access door under the dashboard. Again, a wiring diagram would be helpful.
To find it definitively:
1. Consult your owner's manual: This is the best place to start. It should have a diagram of the fuse and relay box locations and their designations.
2. Use a wiring diagram: A wiring diagram specific to your 1995 Chevy Astro van's year, engine, and trim level will clearly show the location and number of the fuel pump relay. You can find these online through auto parts websites (like Advance Auto Parts, AutoZone, etc.) or repair manuals. You'll need to know your vehicle's VIN for the most accurate results.
3. Check online forums: Search online forums dedicated to Chevy Astro vans. Someone might have already posted about their fuel pump relay location. Be sure to specify your engine type (e.g., 4.3L V6).
Without knowing the specifics of your Astro (engine type, trim level), a more precise answer isn't possible. Always use caution when working with automotive electrical systems.
