1. Disconnect the battery negative cables from the batteries. Refer to Battery Cable in Engine Electrical.
2. Drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
3. Remove the upper fan shroud from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
4. Remove the drive belt from the pulleys. Refer to Drive Belt Replacement .
5. Raise the vehicle.
6. Remove the lower fan shroud from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
7. Remove the A/C compressor from the mounting bracket and reposition to the side.
8. Remove the power steering pump from the mounting bracket. Refer to Power Steering Pump Replacement in Power Steering.



9. Remove the left mounting bracket from the engine block.
10. Remove the generator from the mounting bracket. Refer to Generator Replacement in Engine Electrical.
11. Remove the vacuum pump from the mounting bracket. Refer to Vacuum Pump Replacement .



12. Remove the right mounting bracket from the engine block.
13. Remove the water pump from the engine front cover. Refer to Water Pump Replacement in Engine Cooling.
14. Remove the crankshaft balancer from the crankshaft. Refer to Crankshaft Balancer Replacement .
15. Remove the crankshaft position sensor from the engine front cover. Refer to Crankshaft Position Sensor Replacement in Engine Controls-6.5L.



16. Remove the fuel injection drive gear from the camshaft.
17. Remove the fuel injection pump mounting bolts. Refer to Fuel Injection Pump Replacement in Engine Controls-6.5L



18. Remove the bolts from the engine front cover and the oil pan.

Important: Mark the fuel line clips, so that they can be re-installed on the proper stud.

19. Remove the fuel line clips from the studs.



20. Remove the engine front cover from the engine block.

Tools Required

J 22102 Seal Installer

1. Use the J 22102 to install a new crankshaft front cover oil seal.



2. Apply a 2 mm (3/32 inch) bead of anaerobic sealant GM P/N 1052357 to the engine front cover.
3. Apply a 5 mm (3/16 inch) bead of RTV sealant GM P/N 12345739 to the engine front cover sealing surface that mates with oil pan.



4. Install the engine front cover to the engine block




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.

5. Install the engine front cover mounting bolts

Tighten
tighten the engine front cover mounting bolts to 40 N·m (30 lb ft).




6. Install the left mounting bracket to the engine front cover.
7. Install the power steering pump to the mounting bracket. Refer to Power Steering Pump Replacement in Power Steering.



8. Install the A/C compressor to the mounting bracket and reposition to the side.



9. Install the right mounting bracket to the engine front cover.
10. Install the generator to the mounting bracket. Refer to Generator Replacement in Engine Electrical.
11. Install the vacuum pump to the mounting bracket. Refer to Vacuum Pump Replacement .
12. Install the fuel injection pump mounting bolts. Refer to Fuel Injection Pump Replacement in Engine Controls-6.5L.
13. Install the water pump to the engine block. Refer to Water Pump Replacement in Engine Cooling.

Important: Check the marks on the fuel line clips made during removal. Ensure that the fuel line clips are re-installed on the proper studs.




14. Install the fuel pump drive gear to the camshaft and align the timing marks.

Tighten
Tighten the bolts to 25 N·m (20 lb ft).

15. Install the fuel return line clips.
16. Install the crankshaft position sensor to the engine front cover. Refer to Crankshaft Position Sensor Replacement in Engine Controls-6.5L.
17. Install the crankshaft balancer to the crankshaft. Refer to Crankshaft Balancer Replacement .
18. Install the lower fan shrouds to the radiator. Refer to Radiator Replacement in Engine Cooling.
19. Lower the vehicle.
20. Install the drive belt on the pulleys. Refer to Drive Belt Replacement .
21. Install the upper fan shroud to the radiator. Refer to Fan Shroud Replacement
22. Connect the battery negative cables to the batteries. Refer to Battery Cable in Engine Electrical
23. Refill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
24. Reset the fuel injection pump timing. Refer to Fuel Injection Pump Timing Adjustment in Engine Controls-6.5L.
25. Perform the TDC offset timing procedure. Refer to Fuel Injection Pump Top Dead Center Offset Adjustment in Engine Controls-6.5L.