* Under the hood in the fuse box: This is the most common location. The fuse box is typically located near the battery. However, the relay itself might not be labeled clearly. You'll likely need to consult your owner's manual's fuse box diagram to identify it. Look for a relay that's related to the fuel system or the fuel pump.
* Under the dash: Less common, but possible. Check the fuse box under the dash as well. Again, the diagram in your owner's manual will be essential.
* In the under-hood power distribution center (PDC): Some S10s had a more complex power distribution center, potentially containing the fuel pump relay. This is less likely, but possible.
How to Identify it:
Since there's no single definitive location, identifying the relay requires some detective work:
1. Consult your owner's manual: This is the first and best place to start. The diagram should show relay locations and functions.
2. Check the fuse box diagrams: There are usually diagrams printed inside the fuse box lids (both underhood and underdash, if applicable). These diagrams should show the layout and may provide clues to the fuel pump relay location.
3. Use a multimeter (if comfortable): If you are comfortable using a multimeter, you can test the circuits associated with the fuel pump to determine which relay controls the pump. This is more advanced, but can confirm the correct relay. Caution: Working with car electrical systems can be dangerous if not done correctly.
If you cannot locate it using these methods: Consult a qualified mechanic. They have the experience and tools to diagnose and locate the component quickly and safely.
