Tools Required

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Drain cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.



3. Remove the duct between the throttle body and the air cleaner.



4. Remove the generator stud-ended bolt.
5. Remove the intake manifold. Refer to Intake Manifold Replacement .
6. Install the generator stud-ended bolt.
7. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement .
8. Install the J 28467-360 . Refer to Engine Support Fixture .
9. Remove the ignition coil and module assembly. Refer to Ignition Control Module Replacement in Engine Controls - 2.4L.



10. Disconnect the camshaft position sensor connector.
11. Remove the power steering pump. Refer to Power Steering Pump Replacement in Power Steering System.



12. Remove the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement in Engine Controls.
13. Leave the fuel lines attached and position the fuel rail aside (on top of the master cylinder).
14. Remove the camshaft housings and camshafts. Refer to Intake Camshaft, Housing and Lifter Replacement or Exhaust Camshaft, Housing and Lifter Replacement .
15. Remove the lifters. Refer to Exhaust Camshaft, Housing and Lifter Replacement .



16. Disconnect the electrical connection from the oil pressure switch.
17. Disconnect the radiator inlet (upper) hose from the coolant outlet.



18. Disconnect the coolant temperature sensor connectors.
19. Remove cylinder head bolts.
20. Remove the cylinder head and gasket.

1. Install the cylinder head and the gasket.

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.

2. Install cylinder head bolts.

Tighten

•	Tighten bolts 1  through 8  to 65 N·m (40 lb ft).

•	Tighten bolts 9  and 10  to 40 N·m (30 lb ft).

•	Then tighten all bolts an additional 90  degrees.




3. Connect the coolant temperature sensor connectors.
4. Connect the radiator inlet (upper) hose to the coolant outlet.



5. Connect the electrical connection to the oil pressure switch.
6. Install the lifters. Refer to Exhaust Camshaft, Housing and Lifter Replacement .
7. Install the exhaust camshaft housing. Refer to Exhaust Camshaft, Housing and Lifter Replacement .
8. Install the intake camshaft housing. Refer to Intake Camshaft, Housing and Lifter Replacement .
9. Install the timing chain housing and the timing chain. Refer to Timing Chain Housing Replacement .
10. Install the fuel rail to the cylinder head. Refer to Fuel Injection Fuel Rail Assembly Replacement in Engine Controls.



11. Connect the vacuum line to the fuel pressure regulator and the fuel injector harness connector.




Important: Before you reinstall the power steering pump, apply a 3 mm bead of GM P/N 12346586 sealer or the equivalent to the joint at the end of the camshaft housing halves.

12. Install the power steering pump assembly. Refer to Power Steering Pump Replacement in Power Steering System.



13. Connect the camshaft position sensor connector.
14. Install ignition coil to the module assembly. Refer to Ignition Control Module Replacement in Engine Controls - 2.4L.
15. Install engine mount. Refer to Engine Mount Replacement .
16. Remove the J 28467-360 . Refer to Engine Support Fixture .
17. Install the exhaust manifold. Refer to Exhaust Manifold Replacement .
18. Remove the generator stud - ended bolt.
19. Install the intake manifold. Refer to Intake Manifold Replacement .



20. Install the generator stud - ended bolt.
21. Connect the following electrical connections:

•	The MAP sensor

•	The EVAP canister purge solenoid

•	The camshaft position sensor

22. Install the power brake vacuum hose to the throttle body.
23. Install the heater inlet and the throttle body hose to the water outlet.



24. Install the duct between the throttle body and the air cleaner.
25. Fill the coolant system. Refer to Cooling System Draining and Filling in Engine Cooling.
26. Connect the battery cable.