Tools Required: Notes

J 35268-A  Camshaft/Front Main Seal Installer. See Special Tools and Equipment .

1. Remove the oil pump pipe and screen assembly. Refer to Oil Pump Pipe and Screen Assembly Replacement .
2. Remove the crankshaft drive gear. Refer to Crankshaft Pulley Replacement .
3. Remove the engine oil pressure switch. Refer to Engine Oil Pressure Sensor and/or Switch Replacement .
Fig 1: Identifying Generator Lower Mounting Bolt & Generator Upper Mounting Bolt
Courtesy of GENERAL MOTORS CORP.
4. Remove the generator lower mounting bolt (2).
5. Loosen the generator upper mounting bolt (1).
6. Pivot the generator out of the way and tighten the generator upper mounting bolt only enough to hold in position.
Fig 2: Removing & Installing Oil Pump Bolts
Courtesy of GENERAL MOTORS CORP.
7. Remove the oil pump bolts.
8. Remove the oil pump and gasket.
9. Remove the front main oil seal from the oil pump.
10. Clean the engine block and oil pan sealing surfaces.
11. Clean and inspect the oil pump. Refer to Oil Pump Cleaning and Inspection .
12. Disassemble the oil pump if necessary. Refer to Oil Pump Disassemble .