Where is the PCV valve located on a 2004 Pontiac Grand Prix?

PCV Valve Location

I just changed mines recently. Remove the top cover. It should be located on the left side (passenger side) next to the fuse box. It has a plastic covering that reads sensor. Look for the wiring.

That's correct if its a Grand Prix GT. If you have a Grand prix GTP supercharged engine, the PCV valve is under the black plastic engine cover which comes off by removing the oil filler plastic tube and lifting up and forward. Look to the back right corner of the intake manifold when standing in front of the car and you will see a small metal cover with two bolts. Inside is a gasket, a spring, and the PCV valve. Be careful and keep it clean.