GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Important: Observe and reference mark the positions of all the driveline components, relative to the propeller shaft and axles, prior to disassembly. Reassemble all the components in the exact relationship to each other as the parts were when these parts were removed. You must follow any specifications and torque values, and any measurements made prior to disassembly.

  1. Remove the drive pinion yoke. Refer to Drive Pinion Yoke Replacement .
  2. Remove the pinion oil seal with a suitable seal removal tool. Do not damage the carrier.
  3. Inspect the seal surface of the pinion yoke for the following conditions:
  4. • Tool Marks
    • Nicks
    • Damage such as a groove worn by the seal
  5. Inspect the carrier bore for burrs that might cause leaks around the outside of the seal.

Installation Procedure

Tools Required

J 33782 Pinion Oil Seal Installer


    Object Number: 321794  Size: SH
  1. Install the new pinion oil seal using the J 33782 .
  2. Install the drive pinion yoke. Refer to Drive Pinion Yoke Replacement .