GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 44915 Seal Installer

Removal Procedure


    Object Number: 688821  Size: SH
  1. Remove the torque tube assembly. Refer to Driveline Torque Tube Replacement .
  2. Remove the drive pinion housing oil seal (1) and discard.

  3. Object Number: 630653  Size: SH

    Important: The internal components of the torque tube assembly cannot be serviced separately. If corrosion exists that cannot be polished off, or there is excessive scoring or wear, the torque tube must be replaced as a complete assembly.

  4. Inspect the sealing surface (1) of the propeller shaft contained inside the torque tube. Polish corrosion off with a crocus cloth.

Installation Procedure


    Object Number: 1532256  Size: SH
  1. Lubricate the new pinion housing assembly oil seal with synthetic gear oil GM P/N 12378514 Canadian P/N 88901045 or equivalent.
  2. Use the J 44915 in order to install a new oil seal (2) to the drive pinion housing.
  3. Install the torque tube assembly. Refer to Driveline Torque Tube Replacement .
  4. Inspect the differential carrier lubricant level. Refer to Lubricant Change .