To find it, you'll need to:
1. Locate the valve cover: This is the top part of the engine, often with a lot of wiring and hoses attached.
2. Look for a small, usually black, plastic valve: It's often capped with a hose on one end and has a hose or tube connected to the intake manifold on the other. The PCV valve itself might be somewhat recessed into the valve cover.
3. Consult a repair manual or online diagrams: Searching for "[Your Engine Size] 2000 Chevy Silverado 1500 PCV valve location" with images will be helpful. A repair manual specific to your truck's engine will give you the most precise location.
It's crucial to use the correct engine size when searching for diagrams, as the location can slightly vary between different engines.