Cylinder Head Disassemble

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

J-8062 Valve Spring Compressor
EN-46116 Valve Stem Seal Remover/Installer
EN-50031 Valve Spring Compressor (off-vehicle)

Equivalent regional tools: Special Tools

Courtesy of GENERAL MOTORS COMPANY

Remove the coolant air bleed hose fitting.

NOTE:

Ensure that the valve train components are kept together and identified in order for proper re-installation in their original position.

Using the J-8062 compressor and the EN-50031 compressor, compress the valve spring (4).
Remove the valve keys (1).
Slowly release the J-8062 compressor and the EN-50031 compressor from the valve spring assembly.
Remove the retainer (3).
Courtesy of GENERAL MOTORS COMPANY

Remove the springs.
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CAUTION:
Do not damage the valve guide. Remove any burrs that have formed at the key groove by chamfering the valve stem with an oil stone or a file.

Remove the valve seal. Use the EN-46116 remover. Do not reuse.
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Remove the valve.
Remove the remaining valves.
Courtesy of GENERAL MOTORS COMPANY

Remove the cylinder head plugs.