Cylinder Head Disassemble

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 8062 Valve Spring Compressor
J 42037 Valve Spring Compressor Adapter
J 38820 Valve Stem Seal Remover/Installer

Remove the spark plugs.

Fig 1: Removing Spark Plugs
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Organize the valve train components when disassembling so they can be reassembled in the same location and matched up with the same components as previously installed.
Use J 8062 and J 42037 to compress the valve spring.

Fig 2: Compressing Valve Spring
Courtesy of GENERAL MOTORS CORP.
Remove the valve keys.

Fig 3: Removing Valve Keys
Courtesy of GENERAL MOTORS CORP.
Remove J 8062 and J 42037.
Remove the valve spring retainer and valve spring.

Fig 4: Removing Valve Spring Retainer And Valve Spring
Courtesy of GENERAL MOTORS CORP.
Remove the valves.

Fig 5: Removing Valves
Courtesy of GENERAL MOTORS CORP.
Use J 38820 to remove the valve seals.

Fig 6: Removing Valve Seals
Courtesy of GENERAL MOTORS CORP.
Inspect the water jacket plug, for leakage. Replace if necessary.

Fig 7: Inspecting Water Jacket Plug For Leakage
Courtesy of GENERAL MOTORS CORP.
Inspect the (inner) oil gallery plug, for leakage. Replace if necessary.

Fig 8: Inspecting (Inner) Oil Gallery Plug For Leakage
Courtesy of GENERAL MOTORS CORP.
Inspect the (end) oil gallery plugs, for leakage. Replace if necessary.

Fig 9: Inspecting (End) Oil Gallery Plugs For Leakage
Courtesy of GENERAL MOTORS CORP.