There isn't an "S" terminal on a typical 1995 Chevy starter. Starters generally have only two large terminals: one for the battery's positive (+) cable and one for the ground (-). The "S" terminal is sometimes found on solenoid-style starters, but it usually functions as a second power input, not as a standard terminal for connection. The 1995 Chevy starter uses the battery positive cable and the engine block for the ground.
If you're working on your starter and are seeing a terminal labeled "S," or are looking for a way to activate the solenoid separately, you'll need to consult a wiring diagram specific to your vehicle's year, make, and model. A wiring diagram will show you precisely how the starter solenoid's power connections are made.
