GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 41371 Reluctor Wheel Remover
    • J 8433-1 Reluctor Wheel Remover.
    • J 22102 Front Cover Oil Seal Installer
    • J 23523-F Crankshaft Balancer Remover and Installer

Removal Procedure

  1. Disconnect the battery negative cable from the battery. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

  2. Object Number: 64551  Size: SH
  3. Remove the crankshaft balancer from the crankshaft. Refer to Crankshaft Balancer Replacement .
  4. Remove the water pump from the engine block. Refer to Water Pump Replacement in Engine Cooling.
  5. Remove the engine front cover from the engine block. Refer to Engine Cover Replacement .

  6. Object Number: 181777  Size: SH
  7. Use the J 41371 and J 8433-1 in order to remove the crankshaft position reluctor ring from the crankshaft.

Installation Procedure


    Object Number: 65847  Size: SH

    Important: Replace the crankshaft position sensor whenever the crankshaft position reluctor ring is replaced

  1. Use the J 22102 in order to install the crankshaft position reluctor ring on to the crankshaft. Use J 23523-F .

  2. Object Number: 64547  Size: SH
  3. Install the engine front cover to the engine block. Refer to Engine Front Cover Replacement .
  4. Install the water pump to the engine block. Refer to Water Pump Replacement .

  5. Object Number: 4065  Size: SH
  6. Install the crankshaft balancer to the crankshaft. Refer to Crankshaft Balancer Replacement .
  7. Connect the battery negative cable to the battery. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  8. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.