Oil Pump Cleaning and Inspection: Disassemble
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.
Remove the inner rotor (2) and outer rotor (1).
- Disassemble the oil pressure relief valve (3 - 5).
- Clean all of the parts in cleaning solvent. Remove varnish, sludge and dirt.
- Inspect the oil pump for wear and scoring. Insure that all components are within specifications. Refer to Engine Mechanical Specifications .
- Replace the oil pump assembly if it is out of specification or damaged.
WARNING:
Refer to Safety Glasses Warning .