To be certain, you'll need to:
1. Identify your engine size: Check your vehicle's documentation or the engine block itself.
2. Consult a repair manual specific to your engine: A Haynes or Chilton manual for your year and engine will have a diagram showing the exact location.
3. Look online: Search for "[your engine size] 2000 Chevy Suburban PCV valve location" on YouTube or a car forum. Many people have posted pictures and videos showing the location.
While it's *usually* on the valve cover, double-checking with a manual or visual confirmation is highly recommended to avoid working on the wrong part.