Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

1. Disconnect the negative battery cable.
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
3. Remove the engine oil pan and the oil pump strainer. Refer to Oil Pan Replacement in Engine Mechanical.
4. Remove the timing belt. Refer to Timing Belt Replacement in Engine Mechanical.
5. Remove the lower generator mounting bracket.



6. Place a slotted screwdriver into a square hole (1) in the clutch housing (2) in order to lock the crankshaft on a vehicle equipped with a manual transaxle.



7. Place a slotted screwdriver between the teeth of the flywheel (1) in order to lock the crankshaft on a vehicle equipped with an automatic transaxle.



8. Remove the crankshaft timing gear bolt (1).
9. Remove the crankshaft timing gear (2).
10. Remove the timing belt guide (3).
11. Lower the vehicle.



12. Remove seven oil pump mounting bolts and the oil pump (5) from the cylinder block that has a rubber seal.
13. Remove the rotor plate pins from the oil pump (5).

Tools Required

1. Install the rotor plate pins into the oil pump body (5).
2. Use a J 37747 in order to install the crankshaft oil seal into the oil pump body.



3. Apply engine oil to a J 34853 .
4. Fit the J 34853 to the crankshaft.

Important: Ensure that the oil seal lip is not turned out during oil pump installation.

5. Install the oil pump to the cylinder block.

Use the J 34853 in order to install the oil seal over the crankshaft.

6. Remove the J 34853 .



7. Apply Locite® pipe sealant GM P/N 12346004 or the equivalent to the thread portion of the oil pump mounting bolts (1) indicated.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

8. Install the oil pump mounting bolts (2) to the oil pump assembly.

Tighten
Tighten the oil pump mounting bolts to 11 N·m (97 lb in).




9. Install the rubber seal (2) between the oil pump (1) and the coolant pump (3).



10. Use a sharp knife in order to cut off the edge of the oil pump gasket if the edge of the gasket bulges out.

Verify that the edge is smooth and flush with the end faces of the pump case and the cylinder block.

11. Install the timing belt guide and the crankshaft timing gear.

Ensure that the concave side of the timing belt guide faces the oil pump.

12. Lock the crankshaft with a slotted screwdriver.
13. Secure the timing assembly with a crankshaft timing gear bolt.

Tighten
Tighten the crankshaft timing gear bolt to 130 N·m (96 lb ft).

14. Install the lower generator mounting bracket.

Tighten
Tighten the lower generator mounting bracket bolts to 24 N·m (18 lb ft).

15. Install the engine oil pan and the oil pump strainer. Refer to Oil Pan Replacement in Engine Mechanical.
16. Install the timing belt. Refer to Timing Belt Replacement in Engine Mechanical.
17. Lower the vehicle.
18. Refill the engine oil to specifications. Refer to Approximate Fluid Capacities in Maintenance and Lubrication.
19. Connect the negative battery cable.
20. Start the engine and inspect the engine oil pressure.