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The answer below is NOT true. There IS a PCV valve on all Bonnevilles. It is mounted in the intake manifold. Obviously there would not be a replacement being made for vehicles if it didnt exist!!!! Look on the left hand side of the intake manifold. It will have a sensor mounted to the top of the housing that fits the PCV valve. Remove this sensor and underneath the PCV valve will be sitting. Pull it out with some needle nose pliers and be sure to keep the o ring that is wrapped around the old one if you did not receive on with your new one. =)

Answerthere isn't one evern though all the books at parts stores show that you need PVC vavle 299 or something like that the 3.8 liters don't have one they use a diffrent source of cranckshaft ventilation
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Q: Where is the PCV valve located on a 1997 Pontiac Bonneville?
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