Under the "sight shield," the plastic engine cover. Remove the two black 13mm nuts, then unhook from the clip on the rear valve cover. The PCV valve is located in the front valve cover, on the transmission end of the motor, opposite the oil filler cap. Check out this picture: 99intrigue.shutterfly.com/headgasket/97#103
The PCV valve is located in the valve cover
The PCV valve on a 1998 Oldsmobile Intrigue is located under the MAP sensor. If you remove the large plastic cover with 3800 written on it and look to the left side of the engine there is a sensor marked (Pressure Sensor) with 3 wires going into it. Unplug that sensor and turn it counter clockwise and lift it off and you will see the PCV valve under it. Here is a picture to go along with my answer. http://autorepair.about.com/library/illustrations/bl795lib.htm
The PCV valve for a 1999 Regal 3.8 is located on the top of the valve cover. The valve pulls out to replace it.
The PCV valve on a 1999 Bravada is located near the oil filter. It is on the passenger side of the engine compartment.
The PCV valve on a 1999 Astro should be located on top of the valve cover. It plugs in and can be easily replaced.
There is a rubber elbow on both ends of the metal pipe that connects to your PCV valve.
In the intake behind the throtle body.
THERE IS NOT ONE.
The PCV valve on a 1999 GMC Jimmy is located on top of the engine, on the left side. It connects the valve cover to the intake manifold.
The PCV valve located is on top of the valve cover. It is right beside of the oil filler cap.
i DONT KNOW WHERE BUT I AM TOLD IT IS LOCATED INSIDE THE VALVE COVER