Where is the crankshaft sensor located on a 1993 Chevy Lumina Z34?

The crankshaft sensor is located in the front of the engine, on the passenger's side. Behind the power steering pump. The crankshaft gear teeth pass in front of the sensor which generates an electrical signal when a tooth moves past it's end. This signal is sent to the Engine Control Module (ECM) which uses the signal to determine engine timing.