Where is the crankshaft sensor on 2004 grand am?

The crankshaft position sensor (CKP sensor) on a 2004 Pontiac Grand Am is located on the passenger side of the engine block, near the bottom of the engine, close to the crankshaft pulley. It's usually a fairly small sensor with a single wire connector.

However, the exact location can vary slightly depending on the specific engine (2.2L or 3.4L). You should consult a repair manual specific to your vehicle's engine for a precise diagram and location. A repair manual will show you exactly where to look, and give you helpful tips and warnings for safely accessing the area.