Where is the PCV valve on a 1970 Buick?

On a 1970 Buick, the Positive Crankcase Ventilation (PCV) valve is typically located on the valve cover. It is often positioned near the rear of the engine, where it connects to the intake manifold or a hose leading to it. To locate it, look for a small, round or cylindrical component that can be pulled out of its grommet or fitting.