Where is PCV valve on 2002 Buick lesabre?

On a 2002 Buick LeSabre, the Positive Crankcase Ventilation (PCV) valve is located on the engine's valve cover. Specifically, it can be found on the driver's side toward the rear of the engine. You may need to remove any engine covers or components obstructing access to reach it. Be sure to check the PCV hose for any signs of wear or damage when inspecting or replacing the valve.