GM Service Manual Online
For 1990-2009 cars only

    Important: Do not nick the crankshaft sealing surface when removing the seal.

  1. Remove crankshaft rear main oil seal using one of the following techniques:
  2. • Refer to step #2 for the removal of new style crankshaft rear main oil seal.
    • Refer to step #3 for the removal of old style crankshaft rear main oil seal.

    Object Number: 1718330  Size: SH
  3. If removing a new style seal--seal lip is facing outward, insert a flat-bladed or similar tool between the sealing lip and the outer casing of the seal at an angle, and gently pry seal out by moving tool towards the center of the crankshaft.

  4. Object Number: 1718332  Size: SH
  5. If removing an old style--seal lip faces inward, insert a flat-bladed or similar tool between the outer seal casing and the engine block casting and gently pry seal out.
  6. Repeat above steps as necessary around the crankshaft rear oil seal, until the seal is removed.