GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 8614-01 Pinion Flange Holder

  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement .
  3. Mark the following components with a punch in a straight line before disassembly:
  4. • The drive pinion gear flange
    • The drive pinion gear
    • The drive pinion gear nut

    Object Number: 164050  Size: SH
  5. Use J 8614-01 in order to remove the following components:
  6. • The drive pinion gear nut
    • The drive pinion gear washer

    Object Number: 164041  Size: SH
  7. Remove the drive pinion gear flange (1).
  8. If the drive pinion gear flange or flange seal is damaged, replace the component.

Installation Procedure

Tools Required

    • J 8614-01 Pinion Flange Holder
    • J 23911 Pinion Oil Seal Installer

    Object Number: 164048  Size: SH
  1. Install new flange seal (1) with J 23911 into housing, if removed.
  2. Apply chassis lubricant or an equivalent to the following components:
  3. • The outside diameter of the drive pinion gear flange
    • The sealing lip of the new drive pinion gear seal.
  4. Install the drive pinion gear flange (1).
  5. Install the following components:
  6. • The drive pinion gear washer
    • The drive pinion gear nut (finger tight)

    Object Number: 164050  Size: SH
  7. Hold the drive pinion gear flange.
  8. Use J 8614-01 in order to tighten the drive pinion gear nut to the position previously marked.
  9. Tighten
    Tighten the nut to 1.59 mm (1/6 inch) beyond the alignment mark.

  10. Install the propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement .
  11. Lower the vehicle.
  12. Road test for any abnormal rear axle operation, such as whines or howls.