CTS RWD V8-6.2L SC (2009)
Valve Spring: Service and Repair
Valve Stem Oil Seal and Valve Spring Replacement
Special Tools
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J 22794 Spark Plug Port Adapter
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J 38606 Valve Spring Compressor (Head-on)
Removal Procedure
1. Remove the valve rocker arms. Refer to Valve Rocker Arm and Push Rod Replacement (See: Rocker Arm Assembly/Service and Repair).
2. Remove the spark plug. Refer to Spark Plug Replacement (See: Tune-up and Engine Performance Checks/Spark Plug/Service and Repair).
3. Install the J 22794 into the spark plug hole.
4. Attach an air hose to J 22794 .
5. Tap the end of the valve stem with a plastic face hammer in order to loosen any varnish on the valve stem keys.
6. Use the J 38606 in order to compress the valve spring.