Is there a reset switch on 1999 Chevrolet S10 fuel pump?

No, there's no reset switch on a 1999 Chevrolet S10 fuel pump itself. Fuel pumps are fairly simple electromechanical devices; they either run when power is applied or they don't. If your S10's fuel pump isn't working, the problem lies elsewhere in the system – possibly a faulty pump relay, a blown fuse, a problem in the wiring, a bad fuel pump itself, or an issue with the inertia switch (which is a safety device that cuts power to the fuel pump in a collision). You would need to troubleshoot these components to diagnose the problem.