Where is the crankshaft sensor located on a 1996 Chevy Lumina 3.1?

The crankshaft position sensor (CKP sensor) on a 1996 Chevy Lumina with the 3.1L V6 engine is located on the passenger side of the engine block, near the front (closest to the radiator). It's usually mounted on the engine block itself, pointing towards the crankshaft pulley.

However, the precise location can vary slightly depending on the specific engine configuration. It's a good idea to consult a repair manual specific to your 1996 Chevy Lumina 3.1L for a diagram and precise location. A picture search online for "1996 Chevy Lumina 3.1 crankshaft position sensor location" may also be helpful in visualizing its position.