To find it, you'll need to:
1. Consult a repair manual: A Haynes or Chilton repair manual specific to your year, make, and model will have diagrams showing the exact location of the EGR valve. This is the most reliable method.
2. Use online resources: Search for "1997 Dodge Ram 2500 6cyl EGR valve location" along with images. You might find photos or videos showing the location on a similar engine.
3. Visual inspection: With the engine cool, carefully look at the back of the intake manifold. The EGR valve is usually a relatively small, rectangular or cylindrical component with a vacuum line connected to it. It may have a few wires as well. Look for anything that resembles this description and matches images you find online.
Safety First: Remember to let the engine cool completely before working on it to avoid burns. Always disconnect the negative battery terminal before any significant work near electrical components.