GM Service Manual Online
For 1990-2009 cars only

Timing Chain Tensioner Installation Camshaft


    Object Number: 464756  Size: SH
  1. Compress the camshaft tensioner plunger into the body. Insert a retainer (a paper clip or similar tool) through the hole in the body in order to hold the plunger in place.

  2. Object Number: 466579  Size: SH

    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.

  3. Install the gasket and the camshaft timing chain tensioner.
  4. Tighten

        • Tighten the bolts (1) to 11 N·m (97 lb in).
        • Tighten the nut (2) to 45 N·m (33 lb ft).
  5. Remove the retainer.

  6. Object Number: 466546  Size: SH
  7. Turn the crankshaft 2 revolutions realigning the keyway on the crankshaft (5) with the timing mark on the engine block (4).
  8. Ensure that the guide pins on the camshafts (1) are in line with the notches on the cylinder head (6).

Timing Chain Tensioner Installation Crankshaft


    Object Number: 464753  Size: SH
  1. Hold back the latch, compress the plunger and install a retainer (a paper clip or similar tool) to hold the plunger in place.

  2. Object Number: 464755  Size: SH

    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.

  3. Install the gasket and the timing chain tensioner. Secure with the 2 bolts (1).
  4. Tighten
    Tighten the 2 bolts to 11 N·m (97 lb in).

  5. Remove the retainer.