Thanks for your help man, I've attached an edited photo of the engine bay. Is that the particular hose you were talking about? I've watched nearly every video online, and I don't seem to have the matching "thicker hose" that enters the drivers side valve cover.
Currently working on a 6.0L V8 (2000 LQ9 I believe) and cannot seem to locate the PCV valve and hose (see image for reference).
I was under the impression that they weren’t integrated into the valve cover until around 2005. The body of this truck is a 2000 Sierra 1500 but the engine was replaced from the 4.8 to the 6.0 at some point so I’m guessing for a lot of the component locations.
First time poster, any helps appreciated.