The PCV valve on a 1996 Buick Roadmaster Wagon with a 5.7L engine is typically located on the
passenger side (right side) of the valve cover. It's a small, usually black, plastic valve with a hose connected to it. However, the exact location can vary slightly depending on specific engine modifications or if any parts have been replaced.
To be certain, you should consult a repair manual specific to your vehicle year and engine. A Haynes or Chilton manual would be helpful, along with a diagram of the engine compartment. You can also search online for "1996 Buick Roadmaster 5.7L engine diagram" to find a visual aid.
