* Under the hood in the underhood fuse box: This is the most common location. The fuse box is usually located near the battery. The relay itself might be labeled, or you might need to consult your owner's manual or a wiring diagram to identify it.
* Inside the passenger compartment fuse box: Less common, but possible. This fuse box is typically located under the dashboard on the passenger side. Again, you'll need to refer to your owner's manual or a wiring diagram.
To find it:
1. Consult your owner's manual: This is the best place to start. The manual will have a diagram showing the location of all fuses and relays.
2. Look for the underhood fuse box: It's usually a black plastic box near the battery. Open it and look for a relay that's labeled "fuel pump" or has a symbol representing a fuel pump.
3. Check the interior fuse box (if you can't find it under the hood): Locate the interior fuse box and carefully examine the relays inside.
4. Use a wiring diagram: If you can't find it using the above methods, a wiring diagram specific to your 2003 Chevy S10 will show you the exact location and the relay's appearance. These diagrams are available online through various automotive repair resources.
Remember to always disconnect the negative battery terminal before working with electrical components.
