GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Note: Do not remove the crankshaft rear oil seal housing if only replacing the crankshaft rear oil seal.


    Object Number: 1877081  Size: SH
  1. Remove the oil pan. Refer to Oil Pan Replacement.
  2. Remove the engine flywheel. Refer to Engine Flywheel Replacement.
  3. Remove the housing bolts and nut.
  4. Remove the housing.

  5. Object Number: 524322  Size: SH
  6. Remove and discard the housing gasket.
  7. Clean all the sealing surfaces.
  8. Inspect and replace the housing for warping, cracks, wear, or damage.

Installation Procedure


    Object Number: 524322  Size: SH

    Note: When installing a NEW housing the seal will come with the housing. If reusing the housing and then installing a NEW seal follow the instructions for installing the housing and than refer to Crankshaft Rear Oil Seal Replacement to install the seal.

  1. Install a NEW housing gasket.

  2. Object Number: 1877081  Size: SH
  3. Install the NEW housing with the seal using the following procedure.
  4.         Note: Do not oil or grease the seal lip or the crankshaft seal area.

    2.1. Leave the sleeve in the seal and use the sleeve as a guide to ease installing the seal lip over the end of the crankshaft.
    2.2. Push the housing fully onto the crankshaft until the housing is against the seal gasket and the engine.
    2.3. Remove the sleeve.

    Caution: Refer to Fastener Caution in the Preface section.

  5. Install the crankshaft rear oil seal housing bolts and nut and tighten to 12 N·m (106 lb in).
  6. Install the engine flywheel. Refer to Engine Flywheel Replacement.
  7. Install the oil pan. Refer to Oil Pan Replacement.