
Remove the pressure relief plug-(1),spring-(2), and plunger-(3).

Remove the oil pump gerotor cover-(1) andbolts.Clean all of the parts in cleaning solvent. Remove varnish,sludge and dirt.Inspect the oil pump-(2, 3) for wear and scoring.Ensure that all components are within specifications. Refer toEngine Mechanical Specifications.
Replace the front cover-(4) and oil pump assemblyif it is out of specification or damaged.
Oil Pump Removal Engine Lubrication Oil Pump
Primary Camshaft Intermediate Drive Chain Removal Valvetrain CamshaftFolded-Over Wire Repair
Special Tools EL-38125-10 Splice Sleeve Crimping ToolFor equivalent regional tools, refer toSpecial Tools.The GM global wire repair strategy uses connector assemblies (pigtails) and terminatedleads to repair wiring harnesses.To reduce and manage GM Service Parts proliferation, the service pigtails a ...