GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • EN 46101 Spark Plug Tube Seal Guide
    • EN 46105 Camshaft Locking Tools

    Object Number: 1958789  Size: SH
  1. Remove the EN 46105  (2) from the rear of the left hand camshafts (1).

  2. Object Number: 1957994  Size: SH
  3. Install the EN 46101  (1) onto the spark plug tubes of the left cylinder head.
  4. Install the camshaft cover bolt grommets prior to installing the camshaft cover bolts.
  5. Wipe the camshaft cover sealing surface on the left cylinder head with a clean, lint-free cloth.

  6. Object Number: 1957995  Size: SH

    Important: Make sure the sealing surfaces of the cylinder head and camshaft cover are clean.

  7. Place a 3mm bead of RTV sealant (1) on the join line between the engine front cover and the cylinder head.
  8. Install a NEW camshaft cover seal and NEW grommets.

  9. Object Number: 1957993  Size: SH
  10. Install the camshaft cover (2) from the cylinder head (3).
  11. Loosely install the left camshaft cover to cylinder head retaining bolts (1).
  12. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1961737  Size: SH
  13. Tighten the left camshaft cover to cylinder head retaining bolts in the sequence shown.
  14. Tighten
    Tighten the bolts in sequence to 10 N·m (89 lb in).


    Object Number: 1961738  Size: SH
  15. Remove the EN 46101  (1) from the spark plug tubes of the left cylinder head.

  16. Object Number: 1958116  Size: SH
  17. Install the spark plugs (1).

  18. Object Number: 1958000  Size: SH

    Important: DO NOT damage the spark plug and/or the seal in the left camshaft cover or an engine misfire condition may result.

  19. Install the ignition coils (2) to the camshaft cover (3).
  20. Install each ignition coil to camshaft cover retaining bolt (1).
  21. Tighten
    Tighten the bolt to 10 N·m (89 lb in).