Oil Pump Disassemble

WARNING: This page is about a different car, the 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Pressure Relief Valve

Courtesy of GENERAL MOTORS CORP.

Disassemble the pressure relief valve.

Fig 2: Exploded View Of Oil Pump Assembly

Courtesy of GENERAL MOTORS CORP.

Remove the oil pump gerotor cover and bolts.
Clean all of the parts in cleaning solvent. Remove varnish, sludge, and dirt.
Inspect the oil pump for wear and scoring. Ensure that all components are within specifications. Refer to Engine Mechanical Specifications .
Replace the front cover and oil pump assembly if it is out of specification or damaged.