Oil Pump: Service and Repair

Oil Pump Replacement

^ Tools Required
- J 35268-A Camshaft/Front Main Seal Installer
- J 42065 Crank Hub Holding Tool
- J 42098 Crank Hub TORX Socket

Removal Procedure
1. Remove the timing belt.
2. Remove the timing belt idler pulley.
3. Remove the oil flow control module.
4. Remove the oil pan.





5. Remove the oil pump pickup tube.





6. Remove the oil pump bolts (423).
7. Remove the oil pump (424).
8. Clean the oil pump sealing surfaces if pump is to be reinstalled.

Installation Procedure





1. Install NEW O-rings (427) onto the oil transfer pipe (428).
2. Install the pipe (428) into the block.
3. Apply sealant GM P/N 12346240 or equivalent, evenly to the block mating surface of the oil pump housing and to the inner threads of the bolt holes.
4. Install the pins (426).
5. Install a NEW O-ring (426).

Notice: Refer to Fastener Notice in Service Precautions.

6. Install the oil pump assembly and bolts.
^ Tighten the bolts to 12 Nm (106 inch lbs.).





7. Install a NEW O-ring.
8. Install the oil pump pickup tube.
9. Install the oil pump pickup tube bolts.
^ Tighten the bolts to 12 Nm (106 inch lbs.).
10. Install the oil pan.
11. Install the oil flow control module.
12. Install the timing belt idler pulley.
13. Install the timing belt.