Hey Bowtied,
Just wanted to offer my thanks on an excellent guide. I wouldn't have attempted this fix without your guide.
Couple of comments (I have an '03 SE Auto 4x4 with 75k miles):
1) My power valve screws were in tight and also had some gunk on them that we cleaned out prior to adding locktite. Not sure if they had been threadlocked or not at the factory, but they were not backed out of the valves at all.
2) My throttle body looks different than the one in your pics. On the backside of the throttle body (firewall side), there is what appears to be an electronic control module and there is no linkage on the frontside. Any idea what changes occurred between the '02 and '03?
3) I replaced my PCV valve while I had the manifolds off. The PCV valve in my engine (probably OEM) is threaded into the valve cover. If you search on rockauto.com (or another parts website), two types of PCV valves come up. One, the Fram version, just seems to plug in and is not threaded. This part did not look like the one that came out of my engine. The second type is threaded and costs 3-4x as much. However, there seem to be different versions of threaded PCV valve. The ACDelco variety does not fit. Any idea why different valves are showing up for the same engine?
Again, thanks for a great post.