Tools Required

J 44915 Seal Installer

1. Remove the torque tube assembly. Refer to Driveline Torque Tube Replacement .
2. Remove the drive pinion housing oil seal (1) and discard.




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.

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

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 .