3.8 v6 again: PCV valve

Thanks to those who responded to my question about the oil pressure on my 93 Lumina APV. After reading up in my shop manual I thought maybe my high oil pressure readings might
be related to a clogged PCV valve. However, when I tried to replace it I was not able to. The manual says depress the cover and turn 1/4 turn counterclockwise to remove the cover to gain access to the valve. I cannot depress or rotate the cover at all. I suspect it may be jammed in the depressed position? Also the manual says remove the "sight cover" from the manifold and fuel rail before the step referred to above. I do not see anything that looks like it could be a "sight cover" whatever that could be. The only thing in the way is the FI wire harness.
Any ideas?
Thanks
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It sounds to me like either your "sight cover" is missing or your car didn't come with one (or you took it off without realizing it). It's just a big plastic thing that covers everything on top of the manifold.
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Alan "A.J." Franzman
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For 3.8 L engine, the PCV valve locates just behind the power steering pump. There you should see a square plate (approximately 1 1/2 inch square may be black in color) with two 10mm bolts. Remove the bolts and pull out the PCV valve by the spring. Good luck.! MN

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