Does a 1993 Chevy S10 Blazer have Inertia switch If so where is it?

No, a 1993 Chevy S10 Blazer does not have an inertia switch in the traditional sense like some later vehicles. The fuel pump cutoff system in that model year works differently, typically relying on other safety systems and components rather than a standalone inertia switch. There's no single component you can identify as "the inertia switch".