GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 8062 (KM 348) Valve Spring Compressor - Head Off

Disassembly Procedure

    Caution: Refer to Safety Glasses Caution in the Preface section.


    Object Number: 1241751  Size: SH

    Caution: Valve springs can be tightly compressed. Use care when removing the retainers and plugs. Personal injury could result.

  1. Remove the cylinder head with the intake manifold and the exhaust manifold attached. Refer to Cylinder Head Replacement .
  2. Remove the coolant temperature sensor.

  3. Object Number: 1241753  Size: SH
  4. Remove the exhaust manifold heat shield bolts.
  5. Remove the exhaust manifold heat shields.
  6. Remove the exhaust manifold nuts.
  7. Remove the exhaust manifold.
  8. Remove the exhaust manifold gasket.
  9. Remove the exhaust manifold studs.
  10. Remove the spark plugs.

  11. Object Number: 1241754  Size: SH
  12. Remove the intake manifold retaining nuts.
  13. Remove the intake manifold.
  14. Remove the intake manifold gasket.
  15. Remove the intake manifold studs.

  16. Object Number: 1241756  Size: SH
  17. Remove the thermostat housing mounting bolts.
  18. Remove the thermostat housing.
  19. Remove the thermostat and thermostat gasket.

  20. Object Number: 1241757  Size: SH
  21. Using the J 8062  (1), compress the valve springs.
  22. Remove the valve keys.
  23. Remove the valve spring plates.
  24. Remove the valve springs.
  25. Remove the valves.
  26. Remove the valve stem oil seals.
  27. Remove the camshaft carrier alignment pins.