Removal Procedure

Special Tools

• EN-38188  Cylinder Head Broken Bolt Extractor Kit
• EN-45059  Angle Meter
• J-36857  Engine Lift Bracket

For equivalent regional tools, refer to Special Tools .

1. Drain the coolant system. Refer to Cooling System Draining and Filling (GE 47716) .
2. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
3. Remove the camshaft cover. Refer to Camshaft Cover Replacement .
4. Remove the intake manifold. Refer to Intake Manifold Replacement .
5. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement (LTG) .
6. Remove the engine front cover. Refer to Engine Front Cover Replacement .
7. Remove the camshaft position actuator and camshaft - Intake. Refer to Camshaft Position Actuator and Camshaft Replacement - Intake .
Fig 1: Engine Lift Bracket
Courtesy of GENERAL MOTORS COMPANY
8. 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.

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

    Discard the bolts.

Fig 3: 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.

11. Remove the cylinder head (2).
12. Remove the cylinder head gasket (3).
13. Clean all of the gasket surfaces.
14. 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.

15. Clean the old sealer/lube and dirt from the bolt holes.
16. 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.

17. 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.
18. Remove any broken long cylinder head bolts using the EN 38188  kit.
19. For cylinder head disassemble. Refer to Cylinder Head Disassemble (LTG) .
20. For cylinder head cleaning and inspection. Refer to Cylinder Head Cleaning and Inspection