GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

    • J 22794 Spark Plug Port Adapter
    • J 38606 Valve Spring Compressor
    • J 5892-D Valve Spring Compressor
  1. Remove the valve rocker arms. Refer to Valve Rocker Arm and Push Rod Replacement .
  2. Remove the spark plugs. Refer to Spark Plug Replacement .

  3. Object Number: 65039  Size: SH
  4. Install the J 22794 into the spark plug hole.
  5. Caution: Wear safety glasses in order to avoid eye damage.

  6. Apply compressed air in order to hold the valves in place.

  7. Object Number: 1964  Size: SH
  8. Install the valve rocker arm nut.
  9. Use the J 5892-D in order to compress the valve spring.

  10. Object Number: 218211  Size: SH
  11. Use the J 38606 if clearance does not permit use of J 5892-D.

  12. Object Number: 69538  Size: SH
  13. Remove the valve stem keys (1).
  14. Carefully release the valve spring tension.
  15. Remove the J 5892-D or the J 38606 .
  16. Remove the valve spring cap and valve spring (4).
  17. Remove the valve stem oil seal (2).

Installation Procedure

Tools Required

    • J 22794 Spark Plug Port Adapter
    • J 38606 Valve Spring Compressor
    • J 5892-D Valve Spring Compressor
    • J 42073 Valve Stem Seal Installer

    Object Number: 200320  Size: SH

    Important: The exhaust valve oil seal has the letters EX (1) molded into the top of the seal. The seal material is brown in color (2) with a white stripe (3) painted on the outside diameter of the seal.

  1. Select the proper valve stem oil seal for the specific valve guide.
  2. Lubricate the valve stem oil seal and guide with clean engine oil.
  3. The exhaust and intake valve seals are not interchangeable.

  4. Assemble the valve stem oil seal onto the valve guide using the J 42073 and a hammer.
  5. Install the oil seal onto the valve guide until the installation tool bottoms against the valve spring seat.

  6. Install the valve spring.

  7. Object Number: 1964  Size: SH
  8. Use the J 5892-D in order to compress the valve spring.

  9. Object Number: 31730  Size: SH
  10. Use the J 38606 if clearance does not permit use of J 5892-D.
  11. Install the valve stem keys (1).
  12. Use grease in order to hold the valve stem keys in place.
  13. Carefully release the valve spring pressure, making sure the valve stem keys stay in place.

  14. Object Number: 65039  Size: SH
  15. Remove the J 5892-D or J 38606 and the J 22794 .
  16. Install the spark plugs. Refer to Spark Plug Replacement .
  17. Install the valve rocker arms. Refer to Valve Rocker Arm and Push Rod Replacement .