GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 41478 Crankshaft Front Oil Seal Installer

Removal Procedure

    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 negative battery cable.
  2. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .

  3. Object Number: 220622  Size: SH
  4. Remove the crankshaft front oil seal.

Installation Procedure


    Object Number: 63177  Size: SH
  1. Install the crankshaft front oil seal. Refer to Crankshaft Front Cover Oil Seal Installation .
  2. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
  3. Connect the negative battery cable.