Where is the EGR valve in a Chevy 97 express?

The EGR valve location on a 1997 Chevy Express van varies slightly depending on the engine (e.g., 4.3L, 5.0L, 5.7L, 6.5L diesel). However, it's generally found on the intake manifold, near the back of the engine.

To locate it precisely, you'll need to:

1. Consult your owner's manual: This is the best resource, as it will have a diagram showing the exact location for your specific engine.

2. Use a repair manual (like a Haynes or Chilton manual): These manuals contain detailed diagrams and descriptions.

3. Search online for your specific engine: A Google image search for "[your engine type] EGR valve location" might yield images that can help you identify it.

Keep in mind that the EGR valve is usually a small, rectangular or cylindrical component with a vacuum line connected to it. It might be somewhat difficult to access, depending on the engine and other components surrounding it. Always be careful when working near hot engine parts.