GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • EN 46342 Driver Handle
    • EN 46347 Crankshaft Front Oil Seal Driver

Removal Procedure

  1. Remove the timing belt. Refer to Timing Belt Replacement .
  2. Remove the crankshaft gear. Refer to Crankshaft Gear Replacement .

  3. Object Number: 894318  Size: SH

    Important: Use caution when drilling the hole so as not to damage the area around and behind the seal.

  4. Carefully drill a small, shallow pilot hole into the steel ring of the seal.
  5. Screw in a self tapping screw.
  6. Use pliers to pull out the front main oil seal.
  7. Clean all sealing surfaces.

Installation Procedure


    Object Number: 1227191  Size: SH
  1. Coat the lip of the front main oil seal with a small amount of clean engine oil to aid in the installation.
  2. Use the EN 46347 and EN 46342 to install the oil seal.
  3. Gently tap and install the new oil seal until the tool bottoms on the oil pump housing.

  4. Ensure that the front main oil seal is fully and evenly seated.
  5. Install the crankshaft gear. Refer to Crankshaft Gear Replacement .
  6. Install the timing belt. Refer to Timing Belt Replacement .