* Under the hood in the underhood fuse/relay center: This is the most common location. The fuse/relay box is typically located near the battery. You'll need to consult your owner's manual or a wiring diagram specific to your S-10's engine and trim to identify the correct relay. The relay itself might be labeled, or you might need to use a wiring diagram to trace the fuel pump circuit.
* Inside the passenger compartment fuse box: Less common, but possible on some models. Again, your owner's manual is essential here.
To find the exact location:
1. Consult your owner's manual: This is the best starting point. It will have a diagram of the fuse and relay boxes, showing the location and function of each relay.
2. Use a wiring diagram: A wiring diagram for your specific 1999 Chevy S-10 (including engine type) will show you exactly where the fuel pump relay is and what circuits it controls. You can often find these online through automotive repair websites or forums dedicated to Chevy S-10s.
Without knowing your specific engine (e.g., 2.2L, 4.3L) and trim level, it's impossible to give a more precise answer. Checking your owner's manual is crucial for accurate location information.
