GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • EN-48247 Valve Spring Compression Adapter
    • EN-48252 Crankshaft Oil Seal Installer

    Object Number: 1822635  Size: SH
  1. Lubricate the valve stems with engine oil.
  2. Carefully install the valves in their original positions.
  3. Install the valve stem oil seal.

  4. Object Number: 1822633  Size: SH
  5. Install the valve spring.
  6. Install the valve spring seat.
  7. Install the valve.
  8. Install the valve spring retainer.
  9. Compress the valve spring with the 0991614510 (1) and the EN-48247  (2).
  10. Install the valve key.
  11. Remove the 09916510 (1) and the EN-48247  (2).

  12. Object Number: 1822632  Size: SH
  13. Install the valve lash adjuster.
  14. Install the valve bridges.
  15. Install the valve roller finger followers.

  16. Object Number: 2002859  Size: SH
  17. Lubricate the camshaft surface with the clean engine oil.
  18. Install the camshaft.

  19. Object Number: 1822640  Size: SH
  20. Coat the sealant (LOCTITE 573) on the camshaft front/rear cap sealing surface.
  21. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1822630  Size: SH
  22. Install the camshaft caps and bolts.
  23. Tighten
    Tighten the camshaft cap bolt to 28 N·m (20.7 lb ft).


    Object Number: 1822643  Size: SH

    Important: When installing the camshaft front oil seal to the oil pump, make the oil seal groove faced toward the oil pump case contact.

  24. Install a new camshaft front seal ring using by EN-48252 .

  25. Object Number: 1822645  Size: SH
  26. Install the camshaft sprocket.
  27. Tighten
    Tighten the camshaft sprocket bolt to 133 N·m (98.1 lb ft).


    Object Number: 1820584  Size: SH
  28. Install the vacuum pump.

  29. Object Number: 1822528  Size: SH
  30. Install the exhaust manifold.

  31. Object Number: 1820515  Size: SH
  32. Install the intake manifold.