GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the transmission. Refer to Transmission Replacement in Automatic Transmission.
  2. Remove the flywheel. Refer to Engine Flywheel Replacement (Automatic) .
  3. Important: When removing the crankshaft rear oil seal be careful not to nick the crankshaft sealing surface.

  4. Remove the crankshaft rear oil seal.
  5. Inspect the chamfer on the crankshaft for damage. Repair as necessary.
  6. Clean the seal running surface on the crankshaft with a non-abrasive cleaner.

Installation Procedure

Tools Required

J 38841 Rear Oil Seal Installer

  1. Install the crankshaft rear oil seal as follows:
  2. 1.1. Lubricate the inner and the outer diameter of the seal with clean engine oil.
    1.2. Install the seal on the J 38841 .
    1.3. Position the J 38841 against the crankshaft.

    Thread the attaching screws into the tapped holes in the crankshaft.

    1.4. Tighten the screws securely with a screwdriver in order to ensure that the seal is installed squarely over the crankshaft.
    1.5. Turn the handle until it bottoms.
    1.6. Remove the J 38841 .
  3. Install the engine flywheel. Refer to Engine Flywheel Replacement (Automatic) .
  4. Install the transmission. Refer to Transmission Replacement in Automatic Transmission.