GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 23523-F Crankshaft Balancer remover and Seal Installer
    • J 22102 Front Cover Oil Seal Installer

Removal Procedure

  1. Disconnect the battery negative cable to the battery. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Remove the upper fan shroud from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
  3. Raise the vehicle and support with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Remove the drive belt from the vehicle. Refer to Drive Belt Replacement .
  5. Remove the lower fan shroud from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.

  6. Object Number: 354023  Size: SH

    Important: Use care as not to damage the engine front cover or the crankshaft sealing area when removing the crankshaft front cover oil seal.

  7. Remove the crankshaft balancer from the crankshaft. Refer to Crankshaft Balancer Replacement .
  8. Remove the crankshaft front cover oil seal from the engine front cover.

Installation Procedure

  1. Coat the crankshaft front cover oil seal with clean engine oil.

  2. Object Number: 67878  Size: SH
  3. Use the J 22102 to install the crankshaft front cover oil seal.
  4. Remove the J 22102 from the crankshaft front cover oil seal.

  5. Object Number: 354023  Size: SH
  6. Install the crankshaft balancer to the crankshaft. Refer to Crankshaft Balancer Replacement .
  7. Install the lower fan shroud to the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
  8. Remove the support stands and lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  9. Install the drive belt on the vehicle. Refer to Drive Belt Replacement .
  10. Install the upper fan shroud on the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
  11. Connect the battery negative cable to the battery. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.