GM Service Manual Online
For 1990-2009 cars only

Tools Required

    â€¢ J 8062 Valve Spring Compressor
    â€¢ J 42037 Valve Spring Compressor Adapter
    â€¢ J 38820 Valve Stem Seal Remover/Installer

    Object Number: 954128  Size: SH
  1. Remove the spark plugs.

  2. Object Number: 954132  Size: SH
  3. Remove the A.I.R. injection pipe cover studs.
  4. Remove the A.I.R. injection pipe cover and gasket.

  5. Object Number: 858292  Size: SH

    Important: Organize the valve train components when disassembling so they can be reassembled in the same location and matched up with the same components as previously installed.

  6. Use J 8062  (2) and J 42037  (1) to compress the valve spring.

  7. Object Number: 858296  Size: SH
  8. Remove the valve keys.

  9. Object Number: 858298  Size: SH
  10. RemoveJ 8062 and J 42037 .
  11. Remove the valve spring retainer and valve spring.

  12. Object Number: 858300  Size: SH
  13. Remove the valves.

  14. Object Number: 858302  Size: SH
  15. Use J 38820 to remove the valve seals.

  16. Object Number: 637598  Size: SH
  17. Inspect the water jacket plug, for leakage. Replace if necessary.

  18. Object Number: 637599  Size: SH
  19. Inspect the (inner) oil gallery plug, for leakage. Replace if necessary.

  20. Object Number: 637600  Size: SH
  21. Inspect the (end) oil gallery plugs, for leakage. Replace if necessary.