Where is the PVC valve on a 2001 Buick lesabre custom?

The Positive Crankcase Ventilation (PCV) valve on a 2001 Buick LeSabre Custom is typically located on the valve cover. However, the exact location on the valve cover can vary slightly depending on the engine (3.1L V6 or 3.8L V6). It's usually a small, plastic or metal valve with a hose connected to it.

To find it, you'll need to:

1. Locate the valve cover: This is the topmost part of the engine, covering the top of the cylinder heads.

2. Look for hoses: Follow the hoses leading from the valve cover. One of them will likely lead to the PCV valve. The other hose typically connects to the intake manifold.

3. Identify the valve: The PCV valve itself might be easily visible, or it might be partially hidden under other parts. It's usually relatively small and can be black, gray, or another dark color.

If you can't find it after looking carefully, a repair manual specific to your 2001 Buick LeSabre Custom with the engine size will provide a diagram showing the exact location. You can also search online for images of a "2001 Buick LeSabre 3.1L (or 3.8L) engine PCV valve location" to see pictures that might help. Remember to be cautious when working around the engine; it's hot when running and has many moving parts.