GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 23523-F Crankshaft Balancer Remover


    Object Number: 70257  Size: SH
  1. Disconnect the battery negative cable from the battery. Refer to Battery Cable in Engine Electrical.
  2. Remove the upper fan shroud from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
  3. Remove drive belt from the vehicle. Refer to Drive Belt Replacement .
  4. Raise the vehicle and support with safety stands.
  5. Remove the lower fan shroud from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
  6. Remove the crankshaft pulley from the crankshaft.

  7. Object Number: 173172  Size: SH
  8. Remove the crankshaft balancer bolt and washer from the crankshaft.

  9. Object Number: 60256  Size: SH
  10. Use the J 23523-F to remove the crankshaft balancer from the crankshaft.
  11. Remove the J 23523-F from the crankshaft balancer.

Installation Procedure

Tools Required

J 23523-F Crankshaft Balancer Remover


    Object Number: 66720  Size: SH
  1. Apply a small amount of clean engine oil the crankshaft balancer.
  2. Lightly tap the crankshaft balancer into the crankshaft.
  3. Install theJ 23523-F to the crankshaft balancer.
  4. Install the crankshaft balancer to the crankshaft.
  5. Remove the J 23523-F from the crankshaft balancer.

  6. Object Number: 173172  Size: SH

    Important: When installing the crankshaft balancer bolt and washer, make sure take the curved part of the washer is pointed away from the engine.

    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.

  7. Install the crankshaft balancer bolt and washer to the crankshaft.
  8. Tighten
    Tighten the bolt to 270 N·m (200 lb ft).


    Object Number: 70257  Size: SH
  9. Install the crankshaft pulley to the crankshaft.
  10. Install the crankshaft pulley bolts.
  11. Tighten
    Tighten the bolts to 40 N·m (30 lb ft).

  12. Install the lower fan shroud to the radiator. Refer to Fan Shroud Replacement .
  13. Lower the vehicle.
  14. Install the drive belt in the vehicle. Refer to Drive Belt Replacement .
  15. Install the upper fan shroud to the radiator. Refer to Fan Shroud Replacement .
  16. Connect the battery negative cables to the batteries. Refer to Battery Cable in Engine Electrical.