Cylinder Head Disassemble

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 8062 Valve Spring Compressor-Head Off

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 expansion plugs (7), unless service is required.

Remove the spark plugs from the cylinder heads.

Fig 1: Identifying Cylinder Head Valve Components
Courtesy of GENERAL MOTORS CORP.
Use the J 8062 in order to compress the valve spring.

Fig 2: Compressing Valve Spring Using J 8062
Courtesy of GENERAL MOTORS CORP.
Remove the valve stem keys (2).
Remove the valve spring cap (3).
Remove the valve spring (4).
Remove the valves (9 and 10).
Remove the valve stem oil seal and shim assembly (5). Refer to Separating Parts .

Fig 3: Removing Valve Components
Courtesy of GENERAL MOTORS CORP.
Remove the cylinder head expansion plugs (1), if required.

Fig 4: Removing Cylinder Head Expansion Plugs
Courtesy of GENERAL MOTORS CORP.
Remove the coolant sensor from the left cylinder head, if required.

Fig 5: Removing Coolant Sensor
Courtesy of GENERAL MOTORS CORP.
Remove the coolant plug from the right cylinder head, if required.

Fig 6: Removing Coolant Plug
Courtesy of GENERAL MOTORS CORP.