GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 22794 Spark Plug Port Adapter
    • J 5892-D Valve Spring Compressor
    • J 38606 Valve Spring Compressor

Removal Procedure

  1. Remove the spark plugs. Refer to Spark Plug Replacement in Engine Controls.
  2. Remove the rocker arms. Refer to Valve Rocker Arm and Push Rod Replacement .
  3. Install the J 22794 to the spark plug port.
  4. Apply compressed air in order to hold the valves in place.
  5. Compress the valve spring using the J 5892-D or the J 38606 .
  6. Measure the following items:
  7. • The valve locks
    • The valve cap
    • The valve spring

    Object Number: 54389  Size: SH
  8. Remove the valve stem oil seal.

Installation Procedure

  1. Install the valve stem oil seal. Use the plastic sleeve provided. Press the oil seal over the valve guide boss.

  2. Object Number: 54389  Size: SH
  3. Assemble the following items:
  4. • The spring seat
    • The valve spring
    • The valve cap
  5. Compress the valve spring using the J 38606 or the J 5892-D .
  6. Install the valve locks. Hold the valve locks in place with grease if needed.
  7. Release the valve spring. Ensure that the valve locks are seated.
  8. Install the rocker arms. Refer to Valve Rocker Arm and Push Rod Replacement .
  9. Install the spark plugs. Refer to Spark Plug Replacement in Engine Controls.