GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

    •  J 39046 Crankshaft Balancer Remover
    •  J 22102 Seal Installer
  1. Disconnect the negative battery cables. Refer to

    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.

    in General Information.
  2. Remove the accessory drive belt.
  3. Remove the upper radiator upper shroud. Refer to Cooling and Radiator.
  4. Remove the bolts.
  5. Remove the crankshaft pulley.
  6. Remove the crankshaft balancer bolt and washer.

  7. Object Number: 60256  Size: SH
  8. Remove the crankshaft balancer. Use the J 22102 .
  9. Remove the engine front cover oil seal. Pry out the oil seal with a screwdriver.

Installation Procedure


    Object Number: 67878  Size: SH
  1. Install the new engine front cover oil seal. Use the J 22102 .
  2. Lubricate the sealing area with engine oil. Apply clean engine oil to the crankshaft.
  3. Inspect the crankshaft balancer sealing surface for grooving or roughness. Replace the crankshaft balancer if necessary.
  4. Install the crankshaft balancer. Tap into place with a mallet and make sure the balancer is all the way on the crankshaft.
  5. Install the crankshaft balancer bolt and washer.
  6. Tighten
    Tighten the bolt to 270 N·m (200 lb ft).

    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.

  7. Install the crankshaft pulley and bolts.
  8. Tighten
    Tighten the bolts to 40 N·m (30 lb ft).

  9. Install the accessory drive belt.
  10. Connect the negative battery cables.