* Under the hood in the fuse box: This is the more common location. The fuse box is usually located near the battery. The relay itself might be labeled, or you'll need to consult your owner's manual or a wiring diagram to identify it. Look for a relay that's related to the fuel pump or fuel injection system.
* Inside the passenger compartment fuse box (under the dash): Less common, but possible. Again, you'll need your owner's manual or a wiring diagram to pinpoint the correct relay.
To find it definitively:
1. Consult your owner's manual: This is the best first step. The manual will show you a diagram of the fuse and relay boxes and identify each component.
2. Use a wiring diagram: A wiring diagram specific to your 1996 Chevy S10's year, engine, and options will show the relay's location and circuit. You can find these online through various automotive repair databases (often subscription-based) or possibly through a parts store.
3. Check online forums: Search online forums dedicated to Chevy S10s (like S10 Forum). Someone might have already posted about their fuel pump relay location. Be sure to specify your engine size (e.g., 2.2L, 4.3L).
Caution: Before working on any electrical components, disconnect the negative terminal of your battery to prevent accidental shorts or shocks.