GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

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

  5. Object Number: 59839  Size: SH
  6. Remove the crankshaft balancer from the crankshaft. Refer to Crankshaft Balancer Replacement .
  7. Important: Use care as not to damage the engine front cover, or the crankshaft when removing this seal.

  8. Remove the crankshaft front cover oil seal from the engine front cover.

Installation Procedure

Tools Required

J 22102 Seal installer

  1. Apply a small amount of clean engine oil to the sealing surface of the crankshaft balancer.
  2. Apply a small amount of clean engine oil to the inner sealing surface of the oil seal.

  3. Object Number: 67878  Size: SH
  4. Use the Install New Engine Front Cover Oil Seal 6.5L to install the crankshaft front cover oil seal.

  5. Object Number: 59839  Size: SH
  6. Install the crankshaft balancer to the crankshaft. Refer to Crankshaft Balancer Replacement .
  7. Remove the safety stands and lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  8. Install the drive belt. Refer to Drive Belt Replacement .
  9. Install the fan shroud to the radiator. Refer to Fan Shroud Replacement (Lower VIN 1) in Engine Cooling.
  10. Connect the battery negative cable to the battery. Refer to Battery Cable Replacement in Engine Electrical.