Where is the egr valve located on an a 1999 Chevy Malibu 3.1l v 6?

On a 1999 Chevy Malibu 3.1L V6, the EGR valve is generally located on the intake manifold, near the back of the engine. However, precise location can vary slightly depending on the specific engine configuration. It's usually connected to both the exhaust manifold (via a small pipe) and the intake manifold (with a vacuum line and sometimes a small coolant line).

To be certain, you'll want to consult a repair manual specific to your 1999 Chevy Malibu 3.1L V6. A Haynes or Chilton manual would be a great resource with diagrams. You can also often find diagrams online through sites like AutoZone or similar parts retailers by entering your vehicle's information. Looking at pictures of 3.1L V6 engines for that year will also help you visually identify it once you're looking under the hood.

Be careful when working near the engine. Allow the engine to cool completely before attempting to locate the valve.