GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 38823 Water Pump Pulley Installer
    • J 44212 Camshaft Holding Tool

    Object Number: 650538  Size: SH
  1. Remove the J 44212 from the left cylinder head camshafts.

  2. Object Number: 522716  Size: SH
  3. Ensure new camshaft cover seals are installed.
  4. Place the camshaft cover in position on the cylinder head.

  5. Object Number: 609682  Size: SH
  6. Insert the intake camshaft end through the hole in the end of the camshaft cover.

  7. Object Number: 609683  Size: SH
  8. Using your fingers, guide the camshaft cover up over the edge of the cylinder head. Be careful not to damage the exposed section of the camshaft cover seal on the edge of the cylinder head.

  9. Object Number: 609685  Size: SH
  10. Work the camshaft cover into position by pivoting the cover down and to the left allowing the cover to clear the camshaft drive chain and then aligning the bolt holes.
  11. Install the NEW camshaft cover bolt grommets prior to installing the camshaft cover bolts.
  12. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  13. Install the camshaft cover bolts.
  14. Tighten
    Tighten the camshaft cover bolts to 10 N·m (89 lb in).


    Object Number: 522689  Size: SH
  15. Install a new camshaft seal as follows:
  16. 9.1. Lubricate the lips of the camshaft seal with engine oil.
    9.2. Push the camshaft seal into position around the intake camshaft using the protective sleeve supplied with the seal.

    Object Number: 522688  Size: SH
  17. Coat the seal screws with sealant, GM P/N 1052080, (Canadian P/N 10953480), or equivalent.
  18. Install the screws.
  19. Tighten
    Tighten the camshaft cover seal screws to 3 N·m (27 lb in).


    Object Number: 591908  Size: SH
  20. Place the water pump drive pulley in position on the intake camshaft.

  21. Object Number: 52985  Size: SH
  22. Install the water pump pulley on the intake camshaft using the J 38823 . During installation, the tool will bottom out on the camshaft at the proper depth.

  23. Object Number: 522687  Size: SH
  24. Install the camshaft end cap in the camshaft.
  25. Tighten
    Tighten the camshaft end cap to 2 N·m (18 lb in).