GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 23523-F Crankshaft Balancer Remover and Installer


    Object Number: 11503  Size: SH
  1. Remove the engine front cover. Refer to Engine Front Cover Replacement .
  2. Remove the crankshaft position sensor reluctor ring.
  3. Align the camshaft sprocket and the crankshaft sprocket alignment marks.

  4. Object Number: 5164  Size: SH
  5. Remove the timing chain and sprockets.

Installation Procedure

Tools Required

    • J 23523-F Crankshaft Balancer Remover and Installer
    • J 5825-A Installer

    Object Number: 9848  Size: SH
  1. Rotate the camshaft sprocket so that the timing mark on the balance shaft drive gear is straight up.

  2. Object Number: 9849  Size: SH
  3. Remove the drive gear. Turn the balance shaft so that the timing mark on the driven gear points down.

  4. Object Number: 5144  Size: SH
  5. Reinstall the camshaft drive gear onto the camshaft.
  6. • Ensure that the timing marks align.
    • The number four cylinder should be at the top dead center of its compression stroke. When installing the distributor, position the rotor so that it faces the number four terminal.

    Object Number: 5143  Size: SH
  7. Install the timing chain and the camshaft sprocket.
  8. Tighten
    Tighten the camshaft sprocket bolts to 25 N·m (18 lb ft).

    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.