6.7 L Cummins EGR cooler. Detailed diagnosis and replacement. Watch a pro do it correctly Egr Valve Cooler
Bad EGR cooler or head gasket Decided to take the intake manifold and clean that too. When I removed the throttle body it was sitting in a puddle of engine oil. PCV valve was GM Genuine Parts Exhaust Gas Recirculation (EGR) Cooler Bypass ...