GM Service Manual Online
For 1990-2009 cars only

Assemble Procedure

Special Tools

    • J 8062 Universal Valve Spring Compressor
    • EN-46119 Valve Spring Compressing Adapter

    Object Number: 2049762  Size: SH
  1. Install the valve spring (3), retainer (2), and seal (4).
  2. Install the J 8062 Universal Valve Spring Compressor and EN-46119 Valve Spring Compressing Adapter .
  3. Install the valve key.

  4. Object Number: 2049393  Size: SH

    Note: Do not scratch the valve tappet. Do not use gloves or tools, except special service tools.

  5. Install the valve tappet.

  6. Object Number: 2049390  Size: SH
  7. Coat and lubricate the camshaft bearing and cam surfaces with clean engine oil.
  8. Install the camshafts on the cylinder head.

  9. Object Number: 2049391  Size: SH

    Note: It is essential to ensure that no sealant is applied outside the marked sealing areas.

  10. Apply surface sealant LOCTITE 574 to sealing surfaces (1) of the 1st camshaft bearing cap thinly and evenly.
  11. Note: The grooves (1) adjacent to the sealing surfaces must remain free from sealant.


    Object Number: 2049389  Size: SH
  12. Install the camshaft bearing caps in this sequence (2)-(3)-(1)-(4).
  13. Install the camshaft position solenoid valve housing.
  14. Tighten
    Tighten the camshaft bearing cap bolts to 8 N·m (70.8 lb in).

  15. Install the new camshaft oil seal rings. Refer to Camshaft Front Oil Seal Replacement.