GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 38606 Valve Spring Compressor

For equivalent regional tools, refer to Special Tools.


    Object Number: 909634  Size: SH
  1. Remove the heater inlet pipe stud from the right cylinder head, if required.
  2. Remove the coolant temperature sensor from the right cylinder head, if required.

  3. Object Number: 54421  Size: SH
  4. Compress the valve springs using the J 38606 compressor .

  5. Object Number: 1456477  Size: SH

    Caution: Do not damage the valve guide. Remove any burrs that have formed at the key groove by chamfering the valve stem with an oil stone or a file.

    Note: Ensure that the valve train components are marked, organized or sorted when disassembling the cylinder head. Install the valve train components in the original location from which the component were removed.

  6. Remove the valve spring cap keys.
  7. Remove the valve spring caps.
  8. Remove the valve springs.
  9. Remove the valves.
  10. Remove the valve stem oil seals and spring seats as an assembly.