To find it, you'll need to do the following:
1. Consult your owner's manual: This is the best place to start. The manual should have a diagram of the fuse box and relay locations.
2. Check the fuse box diagrams: Often, the inside of the fuse box cover will have a diagram showing the location of the relays. Look for a relay labeled "Fuel Pump," "EFI," or something similar.
3. Look in the under-hood fuse box: This is usually located near the battery, but its exact placement varies. Carefully examine all relays in the box. They are usually square or rectangular components with multiple terminals.
4. Check the under-dash fuse block (less likely): While less common for the fuel pump relay, some GM vehicles placed some relays in the under-dash fuse box. Check here if you can't locate it under the hood.
Without a specific diagram for your vehicle's fuse box, pinpointing the exact location is impossible. If you can't find it using the above steps, a local mechanic or auto parts store employee specializing in older GM vehicles might be able to assist. They may have access to repair manuals with better diagrams.
