Tools Required

Caution: Refer to Battery Disconnect Caution in the Preface section.

1. Disconnect the negative battery cable.
2. Drain the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.



3. Remove the accessory drive belt. Refer to Drive Belt Replacement .
4. Remove the generator from the engine. Refer to Generator Replacement in Engine Electrical.
5. Install the engine support fixture J 28467-B . Refer to Engine Support Fixture
6. Loosen the A/C receiver pinch clamps.
7. Lift the A/C receiver in order to access the right side engine mount.
8. Remove the right side engine mount. Refer to Engine Mount Replacement .
9. Remove the cylinder head cover. Refer to Cylinder Head Cover Replacement .



10. Set the number one piston to the top dead center position.
11. Align the camshaft timing sprockets.
12. Disconnect the power steering oil pressure switch connector.
13. Raise the vehicle. Support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
14. Remove the right side engine splash shield. Refer to Engine Splash Shield Replacement - Right Side in Body Front End.



15. Remove the two power steering pump through bolts and the nuts (1).
16. Remove the power steering pump from the mounting surface.

Move the pump to the side.




17. Remove the accessory drive belt. Refer to Drive Belt Replacement .
18. Remove the crankshaft pulley retaining bolt using J 8614-01 .



19. Remove the following components:

•	The crankshaft position sensor bolt (5)

•	The sensor

20. Lower the vehicle.
21. Remove the following components from the mounting surface:

•	The drive belt tensioner bolt

•	The drive belt tensioner nut

•	The drive belt tensioner




22. Remove the timing chain tensioner bolts (1, 2).
23. Remove the timing chain tensioner.



24. Remove the following fasteners:

•	The timing chain cover bolts (1-14)

•	The timing chain cover nuts (15)

25. Remove the timing chain cover.

1. Apply silicon sealant GM P/N 12346240 (Canadian P/N 10953493) or equivalent to the four locations (1).



2. Apply a continuous bead of GM P/N 12346240 (Canadian P/N 10953493) or an equivalent to the timing chain cover mating surface.

Notice: Refer to Fastener Notice in the Preface section.




3. Install the timing chain cover.

Use the following fasteners in order to secure the cover:

•	The 15 bolts (2-15)

•	The 2 nuts (1, 16)

Tighten

•	Tighten the timing chain cover nut and bolts (10 mm (0.394 in) head) to 10 N·m (89 lb in).

•	Tighten the timing chain cover nut and bolts (12 mm (0.394 in) head) to 18 N·m (14 lb ft).




4. Use the following steps in order to install the timing chain tensioner:

4.1.	Fully depress the plunger (4).

4.2.	Apply the hook (2) to the pin (3).

4.3.	Install the timing chain tensioner.




5. Install the timing chain tensioner. Secure the timing chain tensioner using 2 bolts (1).

Tighten
Tighten the timing chain tensioner bolts to 21 N·m (15 lb ft).




6. Install the right side engine mounting bracket. Secure the bracket using three bolts.

Tighten
Tighten the engine mounting bracket bolts to 54 N·m (40 lb ft).

7. Install the drive belt tensioner. Secure the tensioner using one bolt and one nut.

Tighten

•	Tighten the bolt to 100 N·m (74 lb ft).

•	Tighten the nut to 29 N·m (21 lb ft).

8. Raise and properly support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
9. Install the crankshaft position sensor. Secure the sensor using 1 bolt (5).

Tighten
Tighten the crankshaft position sensor bolt to 9 N·m (80 lb in).




10. Lubricate the front seal and the sealing surface of the crankshaft pulley with Chassis Grease GM P/N 1051344 (Canadian P/N 993037) or equivalent.
11. Install the crankshaft pulley onto the crankshaft indexing keyway.
12. Install the crankshaft pulley retaining bolt using J 8614-01 .

Tighten
Tighten the bolt to 118 N·m (87 lb ft).




13. Install the power steering pump.
14. Use the following fasteners in order to secure the power steering pump:

•	The 2 bolts (1)

•	The 2 nuts

Tighten
Tighten the power steering pump bolts to 36 N·m (27 lb ft).

15. Install the right side engine splash shield. Refer to Engine Splash Shield Replacement - Right Side in Body Front End.
16. Lower the vehicle.
17. Connect the power steering oil pressure switch connector.



18. Rotate the crankshaft clockwise one revolution. Ensure that the plunger on the timing chain tensioner has released.



19. Complete the following steps if the plunger does not release:

19.1.

Use a screwdriver or your finger in order to press the timing chain dampener into the timing chain tensioner.

19.2.

Release the hook from the pin.

19.3.

Verify proper timing chain alignment after the plunger has released.

20. Install the cylinder head cover. Refer to Cylinder Head Cover Replacement .
21. Install the right side engine mount. Refer to Engine Mount Replacement .
22. Lower the A/C receiver.

Tighten the pinch clamps.

23. Remove the engine support fixture.
24. Install the generator. Refer to Generator Replacement in Engine Electrical.
25. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
26. Connect the negative battery cable.

Tighten
Tighten the battery cable bolt to 15 N·m (11 lb ft).