Component Testing
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Perform the Circuit/System Testing before proceeding with the Component Testing.
- Remove the EGR valve. Refer to Exhaust Gas Recirculation Valve Replacement .
- Inspect the EGR valve, the EGR cooler, the air inlet tube, and all of the EGR passages for the following conditions:
- A sticking, binding, or frozen EGR valve
- A leak or restriction in the EGR valve and EGR ports and passages
- Any coking, soot build up, debris, damage, that can cause the EGR valve to stick partially open or closed
- If any of the above conditions are found, replace the affected component and gaskets, as necessary.