* Under the hood in the underhood fuse/relay center: This is the most likely location. The fuse/relay center is usually located near the battery or firewall. Consult your owner's manual (if you have it) or a repair manual for a diagram showing the fuse/relay layout. Look for a relay that's labelled "Fuel Pump" or has a similar designation.
* Inside the cab, under the dash: This is less common but possible. Again, a diagram from your owner's manual or a repair manual will be crucial to locate it.
To find it reliably:
1. Consult your owner's manual: This is the best starting point. The manual will have a diagram showing the location of all fuses and relays.
2. Use a repair manual: A Chilton's or Haynes repair manual for your specific year and model S-10 will have detailed diagrams and instructions.
3. Online resources: Search for "1991 Chevy S-10 fuel pump relay location" along with any specific engine information (e.g., "4.3L V6") for more targeted results. However, be cautious; some online sources might be incorrect.
Without a diagram, physically locating it will be more challenging. Remember to disconnect the negative battery terminal before working with any electrical components.
