Removal Procedure

Equivalent regional tools:Special Tools 

1. Drain the coolant system. Cooling System Draining and Filling (GE 47716)Cooling System Draining and Filling (Static)
2. Drain the engine oil. Engine Oil and Oil Filter Replacement 
3. Remove the camshaft cover. Camshaft Cover Replacement (1st Design Tamper-Proof PCV System) 
Fig 1: Intake Manifold
Courtesy of GENERAL MOTORS COMPANY
4. Remove the intake manifold (1). Intake Manifold Replacement 
5. Remove the exhaust manifold. Exhaust Manifold Replacement (LTG)
6. Remove the engine front cover. Engine Front Cover Replacement 
Fig 2: Fuel Pump
Courtesy of GENERAL MOTORS COMPANY
7. Remove the fuel pump (2). Fuel Pump Replacement
8. Remove the timing chain and tensioner. Camshaft Timing Chain and Tensioner Replacement 
9. Remove the intake and exhaust camshaft, bearing cap and lash adjuster. Intake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Removal 
10. Disconnect the intake camshaft position sensor. Camshaft Position Sensor Replacement - Intake
11. Disconnect the exhaust camshaft position sensor. Camshaft Position Sensor Replacement - Exhaust
Fig 3: Engine Coolant Temperature (ECT) Sensor Connector
Courtesy of GENERAL MOTORS COMPANY
12. Disconnect the hoses from the water outlet (2). Water Outlet Replacement (LTG)
13. Remove Thermostat Bypass Pipe - Thermostat Bypass Pipe Replacement (LTG)
Fig 4: Engine Lift Brackets And Fastener
Courtesy of GENERAL MOTORS COMPANY
14. Install the J-36857  Engine Lift Bracket (2) and fastener (1) into the engine block.
NOTE:

Support the engine as necessary from underneath while repositioning the engine support fixture.

15. Reposition the engine support fixture lift hook from the engine lift bracket (3) to the J-36857  Engine Lift Bracket (2)
Fig 5: Cylinder Head Bolt tightening Sequence
Courtesy of GENERAL MOTORS COMPANY
16. Remove the cylinder head to the block bolts in sequence.

    Discard the bolts.

Fig 6: Cylinder Head Bolts
Courtesy of GENERAL MOTORS COMPANY
CAUTION:

In order to prevent damage to the valves and injectors during cylinder head removal, set the cylinder head on blocks.

17. Disconnect ground wire.
18. Remove the cylinder head (2).
19. Remove the cylinder head gasket (3).
20. Clean all of the gasket surfaces.
21. Use the following procedures when cleaning the cylinder head and cylinder block surfaces:
    • Be careful not to gouge or scratch the gasket surfaces. Do not gouge or scrape the combustion chamber surfaces. The feel of the gasket surface is important, not the appearance. There will be indentations from the gasket left in the cylinder head after all of the gasket material is removed. These small indentations will be filled in by the new gasket.
    • Use a gasket scraper to clean the cylinder head and cylinder block gasket surfaces. Do not scratch or gouge any surface.
    • Do not use any other method or technique to clean these gasket surfaces.
NOTE:

Do not use a tap to clean the cylinder head bolt holes.

22. Clean the old sealer/lube and dirt from the bolt holes.
23. Clean the bolt holes with a nylon bristle brush.
WARNING:

Wear safety glasses to avoid injury when using compressed air or any cleaning solvent. Bodily injury may occur if fumes are inhaled or if skin is exposed to chemicals.

24. When cleaning the cylinder head bolt holes use a suitable commercial spray liquid solvent and compressed air from an extended-tip blow gun to reach the bottom of the holes.
25. Remove any broken long cylinder head bolts using the EN 38188  kit.
26. If replacing the cylinder head, remove the fuel injection fuel rail and transfer as necessary. Fuel Injection Fuel Rail Assembly Replacement
27. For cylinder head disassemble. Cylinder Head Disassemble 
28. For cylinder head cleaning and inspection. Cylinder Head Cleaning and Inspection