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. Refer to Battery Cable Replacement in Engine Electrical.
  2. Remove the fan shrouds from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
  3. Remove the drive belt from the vehicle. Refer to Drive Belt Replacement .
  4. Remove the cooling fan from the water pump. Refer to Fan Replacement in Engine Cooling.
  5. Remove the crankshaft pulley from the crankshaft balancer.

  6. Object Number: 59837  Size: SH
  7. Remove the crankshaft balancer bolt and the washer.

  8. Object Number: 60256  Size: SH
  9. Use the J 23523-F and remove the crankshaft balancer from the crankshaft.

Installation Procedure

Tools Required

J 23523-F Crankshaft Balancer Remover


    Object Number: 66720  Size: SH
  1. Apply clean engine oil to all of the sealing surfaces.
  2. Ensure that the key is in the keyway.
  3. Use a mallet in order to tap the crankshaft balancer on the crankshaft.
  4. Use the J 23523-F and install the crankshaft balancer.
  5. Remove theJ 23523-F from the crankshaft balancer.

  6. Object Number: 59837  Size: SH
  7. Install the crankshaft balancer bolt and washer.
  8. 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.

  9. Tighten the crankshaft balancer bolt.
  10. Tighten
    Tighten the crankshaft balancer bolt to 270 N·m (200 lb ft).


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

  13. Install the cooling fan to the water pump pulley. Refer to Fan Replacement in Engine Cooling.
  14. Install the drive belt on the pulleys. Refer to Drive Belt Replacement .
  15. Install the fan shrouds to the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
  16. Connect the battery negative cables to the batteries. Refer to Battery Cable Replacement in Engine Electrical.