The 1989 Chevrolet Corvette doesn't have a readily accessible, easily-located fuel pump cutoff switch like some other vehicles. There's no single switch you can flip to instantly cut power. The fuel pump is controlled by the car's computer system and various safety interlocks.
To stop the fuel pump from operating in an emergency situation, you would need to disconnect the battery's negative terminal. This is the most reliable method to completely cut power to the fuel pump.
