Timing Cover: Service and Repair

Engine Front Cover Replacement
Removal Procedure
1. Disconnect the negative battery cable.
2. Drain the cooling system. Refer to Draining and Filling Cooling System.
3. Remove the drive belt tensioner.
4. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement.
5. Remove the oil pan.
6. Remove the crankshaft balancer.
7. Remove the thermostat bypass pipe from the engine front cover.
8. Remove the radiator outlet hose from the engine front cover.
9. Remove the water pump from the engine front cover.





10. Remove the crankshaft position (CKP) sensor wiring harness bracket bolt.
11. Remove the CKP sensor wiring harness bracket.





12. Remove the engine front cover bolts.
13. Remove the engine front cover.





14. Remove the engine front cover gasket.
15. Clean and inspect the engine front cover. Refer to Engine Front Cover Cleaning and Inspection.
16. If replacing the engine front cover, remove the drive belt shield bolt and the drive belt shield.
17. If replacing the engine front cover remove the water pump. Refer to Water Pump Replacement (2.4L) Water Pump Replacement (3.5L) Water Pump Replacement.





18. If replacing the engine front cover, remove the 24X CKP sensor. Refer to Crankshaft Position (CKP) Sensor Replacement.

Installation Procedure





1. If removed, install the 24X CKP sensor. Refer to Crankshaft Position (CKP) Sensor Replacement.
2. If removed install the water pump.

3. Notice: Refer to Fastener Notice in Service Precautions.

If removed, install the drive belt shield. Install the drive belt shield bolt.
Tighten the bolt to 10 Nm (89 inch lbs.).





4. Apply sealant to both sides of the engine front cover gasket with GM P/N 12346004 (Canadian P/N 10953480) or equivalent.





5. Install the engine front cover gasket.





6. Install the engine front cover.
7. Install the engine front cover bolts (1, 2, and 3).
^ Tighten the small engine front cover bolts (1) to 27 Nm (20 ft. lbs.).
^ Tighten the large engine front cover bolts (2, 3) to 55 Nm (41 ft. lbs.).





8. Install the CKP sensor wiring harness bracket.
9. Install the CKP sensor wiring harness bracket bolt.
Tighten the bolt to 27 Nm (20 ft. lbs.).
10. Install the radiator outlet hose to the engine front cover.
11. Install the thermostat bypass pipe to the engine front cover.
12. Install the crankshaft balancer.
13. Install the oil pan.
14. Install the drive belt tensioner.
15. Fill the crankcase with new engine oil. Refer to Engine Oil and Oil Filter Replacement.
16. Fill the cooling system. Refer to Draining and Filling Cooling System
17. Connect the negative battery cable.
18. Perform the CKP system variation learn procedure. Refer to CKP System Variation Learn Procedure. Service and Repair