GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 22912-01 Bearing Remover
    • J 26941 Differential Side Bearing Seal Puller
    • J 29369-2 Universal Bushing Remover
    • J 35661 Countergear Bearing Installer
    • J 8092 Driver Handle
    • J 35664 Pinion Shaft Bearing Installer
    • J 29182 Pinion Shaft Bearing Cup Installer
    • J 35666 Pinion Shaft Bearing Seal Installer

Disassembly Procedure


    Object Number: 163738  Size: SH
  1. Use a J 22912-01 and a press in order to remove the governor drive gear.

  2. Object Number: 163741  Size: SH
  3. Remove the bearing cage from the drive pinion.
  4. Remove the O-ring from the bearing cage.

  5. Object Number: 163745  Size: SH
  6. Use J 22912-01 and a press in order to remove the following components:
  7. • The pinion bearing
    • The outer race of the drive pinion shaft

    Object Number: 163748  Size: SH
  8. Use J 26941 in order to remove the outer race from the bearing cage.
  9. Use J 29369-2 in order to remove both oil seals from the cage.

  10. Object Number: 163743  Size: SH
  11. Use J 22912-01 and a press in order to remove the counter driven gear.

Assembly Procedure


    Object Number: 163744  Size: SH
  1. Use J 35661 and J 8092 in order to install the counter driven gear bearing.

  2. Object Number: 163746  Size: SH
  3. Use J 35664 in order to install the pinion bearing.

  4. Object Number: 163749  Size: SH
  5. Use J 29182 and J 8092 in order to install a new outer race into the bearing cage.

  6. Object Number: 163753  Size: SH
  7. Use J 35666 in order to install the inner oil seal.
  8. Set the lip of the new oil seal facing downward.

    Coat the lip of the seal with GM P/N 1050169 grease.


    Object Number: 163750  Size: SH
  9. Install the inner oil seal press and the press to a depth of 9.5  mm (0.374 inch).
  10. (Measure this depth from the flat end.)

  11. Use the J 35666 in order to install the outer new seal:
  12. 6.1. Place the outer new seal so that the lip is facing upward.
    6.2. Press in the installer until its end is flush with the surface of the cage.
  13. Install a new O-ring into the bearing cage.
  14. Place the bearing cage onto the drive pinion shaft.
  15. Do not damage the oil seal with the splines.


    Object Number: 163768  Size: SH
  16. Install the governor drive gear.