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I have a Chevrolet suburban 2008 1500 with a 5.8L V8 engine. Can you describe with pictures where the PCV valve is, and how to check and replace it? I suspect it to have failed. Some have said it’s on the back of the left valve cover facing the front of the car (I.e. The corner closest to the passenger seat), but there is nothing there. Does this engine not have a PCV system?

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It should be located in the driver's side (left) valve cover towards the rear, pointing just about straight up. There should be a hose which is attached to it and plumbed into the intake manifold (IIRC). Whatever you're looking at (I really can't tell) does not look like the PCV at all.

Here's an image of the driver side valve cover (from RockAuto.com). If you were looking over the fender on the driver's side, this is what you'd see (with a bunch of coils and wires on top):

enter image description here

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  • Thank you. I was looking at the wrong side of the engine, lol. I have found it now.
    – TheLabCat
    Commented Nov 25, 2023 at 18:18
  • Any information on how to check it?
    – TheLabCat
    Commented Nov 25, 2023 at 18:20
  • @TheLabCat - This might help._
    – Pᴀᴜʟsᴛᴇʀ2 ♦
    Commented Nov 26, 2023 at 2:22
  • Thanks. Anyways, why would advance auto parts be selling the PCV valve separate from the valve cover? It looks like the two can’t be separated, but… shop.advanceautoparts.com/p/carquest-premium-pcv-valve-pca1463/…*81544%7CL2*82022%7CL3*-49998050
    – TheLabCat
    Commented Nov 26, 2023 at 21:22
  • @TheLabCat - Because it can be separated? It's designed to be replaced.
    – Pᴀᴜʟsᴛᴇʀ2 ♦
    Commented Nov 26, 2023 at 22:58

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