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Originally Posted by HanibalTheCannibal
I found the PCValve. I pulled the old one, and you know what is weird? It is absolutely hollow. There is no rattley thing in there. No signs of mods, just an empty PCValve fitting. It is exact same shape as the one I put in, but nothing inside ofit. The one I have bought has the rattley thing inside. The one I removed said ACDelco on it, the one I put in is a Deutsch (?) or whatever.
Whats up with that? Any thoughts?
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Mine was like that too. Chevy replaced the normal "rattly" PCV valves on some of these with a fixed orifice type due to oil contamination fouling the TB. There was a TSB, I think. I read all this in some other forums. If I can find the link, I'll post it. Supposedly, if you have the fixed orifice type, you should replace it with one. I have never been able to find one aftermarket, though, so I think you'd have to go to a dealership. I changed mine (before I knew about this) with the normal type from the auto parts store, and have not had the contamination problem. It has not been very long, but supposedly you see deposits on the TB right away. I'm just going to keep my eye on it.