Active Fuel Management Valve Lifters
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- NOTE:
Components that are to be used again must be marked, sorted or organized for assembly.
Clean the components in cleaning solvent.
- Dry the components with compressed air.
- Inspect the valve lifters for the following conditions:
- Broken or collapsed spring (1)
- Worn pushrod socket (2)
- Plugged lubrication hole (3)
- Plugged lifter oil-switching hole (4)
- Flat spots on the roller (5)
- Worn or damaged roller bearing (6)
The roller should rotate freely with no binding or roughness.
- Scuffed or worn sides (7)
WARNING:
Refer to Safety Glasses and Compressed Air Warning .