GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • EN 46101 Spark Plug Tube Seal Guide
    • EN-48383 Camshaft Retaining Tools
         For equivalent regional tools, refer to Special Tools.

    Object Number: 1973156  Size: SH
  1. Remove the EN 48383-3 from the rear of the right camshafts.

  2. Object Number: 1836418  Size: SH
  3. Install the EN 46101 guide onto the spark plug tubes of the right cylinder head.

  4. Object Number: 1836419  Size: SH
  5. Install the NEW camshaft cover bolt grommets prior to installing the camshaft cover bolts.
  6. Wipe the camshaft cover sealing surface on the right cylinder head with a clean, lint-free cloth.

  7. Object Number: 1836422  Size: SH
  8. Place a bead 8 mm (0.3150 in) in diameter by 4 mm (0.1575 in) in height of RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent, on the engine front cover split lines (1).

  9. Object Number: 1864543  Size: SH
  10. Place the right camshaft cover into position onto the right cylinder head.

  11. Object Number: 1864544  Size: SH
  12. Loosely install the right camshaft cover bolts.
  13. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1993004  Size: SH
  14. Tighten the right camshaft cover bolts in the sequence shown.
  15. 8.1. Tighten the right camshaft cover bolts in sequence to 10 N·m (89 lb in).
    8.2. Tighten the right camshaft cover bolts a second pass in sequence to 10 N·m (89 lb in).

    Object Number: 1864548  Size: SH
  16. Remove the EN 46101 guide from the spark plug tubes of the right cylinder head.

  17. Object Number: 1864427  Size: SH
  18. Install the NEW spark plugs into the right cylinder head and tighten to 20 N·m (15 lb ft).

  19. Object Number: 1864424  Size: SH
  20. Install the ignition coils.

  21. Object Number: 1864421  Size: SH
  22. Install the ignition coil bolts and tighten to 10 N·m (89 lb in).