PCV

[alleycat3]

Is there a pcv valve for a 2008 4.8 Chevrolet Silverado valve cover or do I have to buy the valve cover?

 

[Mike534x]

PCV Valve is molded into the valve cover, so you would need to replace it. Dorman makes a revised model that helps cut down on oil blow by for a reasonable cost.

 

[TollKeeper]

What @Mike534x is exactly correct.