Control Valve Body Cleaning and Inspection
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2005 GMC Yukon XL, 2005 GMC Sierra, 2005 GMC Savana Special, 2005 GMC Savana Camper Special, and 2005 GMC Savana. However, it is still accessible from the selected car via links, so may be relevant.
- Clean the control valve body (301) in clean solvent.
- Dry the control valve body (301) using compressed air.
- Inspect the control valve body casting for the following conditions:
- Porosity
- Cracks
- Interconnected passages
- Damaged machined surfaces
NOTE:
Do not reuse cleaning solvents. Previously used solvents may deposit sediment which may damage the component.