Need to know what year S10.
Remove the fuel tank then unscrew the retainig ring and remove unit.
It is in the gas tank.
Start with changing the fuel filter.
It doesn't have a fuel reset button, aka fuel pump inertia switch.
If you mean an inertia kill switch for the fuel pump, no.
Vacuum leak, clogged/dirty fuel injector, bad spark plug/ wires.
Chevrolet does not use inertia switches.
The relay is on the left side of the power brake booster/.
it is in the fuel tank
No.
It is inside of the fuel tank.