GM Service Manual Online
For 1990-2009 cars only

Tools Required

    â€¢ J 44640 Valve Stem Seal Installer
    â€¢ J 8062 Valve Spring Compressor

    Object Number: 663570  Size: SH

    Important: Lubricate the valve stem with clean engine oil before installing.

  1. Install the valves into the cylinder head.
  2. Install the valve spring lower seat.

  3. Object Number: 663571  Size: SH
  4. Install the valve stem seal using J 44640 .
  5. Install the valve spring with the painted end towards the cylinder head.
  6. Install the valve spring upper seat.

  7. Object Number: 663501  Size: SH
  8. Use the J 8062 to compress the valve spring.
  9. Install the valve keys.
  10. Remove the J 8062 from the cylinder head.

  11. Object Number: 64315  Size: SH
  12. Measure the valve installed height using a ruler. Measure from the base of the valve spring to the top of the valve. Refer to Engine Mechanical Specifications.
  13. Install the remaining valves, springs, and other components.