To find it, you'll need to consult your owner's manual. It should have a fuse box diagram showing the location of the fuel pump relay and the fuse that protects it (often labeled as a "fuel pump" or "EFI" fuse, but sometimes related to the injection system).
If you don't have the owner's manual, you can often find a digital version online by searching for "[Year] [Make] [Model] owner's manual PDF".
Look in both fuse boxes: 1993 S10 Blazers typically have two fuse boxes: one under the hood and one inside the vehicle, usually under the dash. Check both. The under-hood fuse box is often the larger of the two.
Without your specific owner's manual, I can't give you a precise location. Always check your owner's manual for the most accurate information.
