Grand Prix V6-191 3.1L VIN M SFI (1998)
4. Compress the valve using the J 38606.
5. Install the valve locks. If necessary, hold the valve locks in place with grease.
6. Release the valve spring using the J 38606.
7. Make sure that the valve locks are seated.
8. Install the valve rocker arm. Refer to Valve Rocker Arm and Push Rod Replacement.
9. Release the air pressure and remove the J 22794.
10. Install the spark plug. Refer to Spark Plug Replacement (3100 L82 (VIN M)) in Starting and Charging.