Tools Required

J 8062  Valve Spring Compressor - Head Off. See Special Tools .

Fig 1: View Of Cylinder Head Components
Courtesy of GENERAL MOTORS CORP.
IMPORTANT:
• Remove the spark plugs from the cylinder head with the components at room temperature.
• Mark, organize, or sort the cylinder head components for assembly. Return the components to their original location during assembly.
• Do not remove the cylinder head core hole plugs (216, 226), unless service is required.
1. Remove the spark plugs from the cylinder heads.
Fig 2: Compressing Valve Spring Using
Courtesy of GENERAL MOTORS CORP.
2. Use the J 8062  in order to compress the valve spring. See Special Tools .
Fig 3: View Of Cylinder Head Components
Courtesy of GENERAL MOTORS CORP.
3. Remove the valve stem keys (225).
4. Remove the valve spring cap (224).
5. Remove the valve spring (223).
6. Remove the valves (227 and 228).
7. Remove the valve stem oil seal (222). Refer to Separating Parts .
Fig 4: View Of Cylinder Head Expansion Plugs
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8. Remove the cylinder head core hole plugs (226), if required.
Fig 5: View Of Coolant Temperature Sensor (Left Cylinder Head)
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9. Remove the coolant temperature sensor from the left cylinder head.
Fig 6: View Of Coolant Plug (Right Cylinder Head)
Courtesy of GENERAL MOTORS CORP.
10. Remove the coolant plug from the right cylinder head.