GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 23523-F Crankshaft Balancer Puller and Installer

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the battery negative cable.
  2. Remove the fan shrouds from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.

  3. Object Number: 173172  Size: SH
  4. Remove the drive belt from the vehicle. Refer to Drive Belt Replacement in Engine Cooling.
  5. Raise the vehicle and support with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.
  6. Remove the crankshaft pulley bolts and pulley from the crankshaft balancer.
  7. Remove the crankshaft bolt and washer from the crankshaft.

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

Installation Procedure

Tools Required

J 23523-F Crankshaft Balancer Puller and Installer

    Important: The inertial weight section of the crankshaft balancer is assembled to the hub with a rubber type material. The correct installation procedures (with the proper tools) must be followed or movement of the inertial weight section of the crankshaft balancer will destroy the balance and will have to be replaced.

  1. Install the crankshaft balancer onto the end of the crankshaft.

  2. Object Number: 66720  Size: SH
  3. Install J 23523-F to the crankshaft balancer.
  4. Use the J 23523-F and install the crankshaft balancer to the crankshaft.
  5. Remove the tool from the crankshaft balancer.

  6. Object Number: 210394  Size: SH
  7. Install the crankshaft pulley to the crankshaft.

  8. Object Number: 173172  Size: SH

    Important: Make sure that when installing the crankshaft bolt and washer, the curved part of the washer is facing away from the engine block.

  9. Install the crankshaft bolt and washer to the crankshaft.
  10. 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.

    Tighten
    Tighten the crankshaft bolt to 149 N·m (110 lb ft).

  11. Install the crankshaft pulley bolts.
  12. Tighten
    Tighten the bolts to 43 N·m (32 lb ft).

  13. Remove the safety stands and lower the vehicle.
  14. Install the drive belt on the pulley. Refer to Drive Belt Replacement in Engine Cooling.
  15. Install the fan shrouds to the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
  16. Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  17. Connect the negative battery cable.