GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 36660-A Torque Angle Meter


    Object Number: 36603  Size: SH
  1. Assemble the timing chain on the sprockets. Ensure that the timing marks are in the closest together position.

  2. Object Number: 35816  Size: SH
  3. Install the timing chain and the crankshaft sprocket.
  4. Install the camshaft sprocket.
  5. Notice: This bolt is designed to permanently stretch when tightened, and therefore MUST be replaced anytime it is removed. The correct part number fastener must be used to replace this type of fastener. Do not use a bolt that is stronger in this application. If the correct bolt is not used, the parts will not be tightened correctly. The system or the components may be damaged.

  6. Install the camshaft sprocket bolt.
  7. Tighten
    Tighten the bolt to 100 N·m (74 lb ft). Use the J 36660-A in order to tighten the bolt an additional 90 degrees.

    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.

  8. Install the timing chain damper.