GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the rear tires and wheels. Refer to Wheel Removal
  2. Remove the propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement
  3. Remove the rear stabilizer shaft. Refer to Stabilizer Shaft Replacement
  4. Use an adjustable lifting device in order to support the rear axle housing (10).
  5. Refer to

    Rear Axle With Antilock Brake System (Drum Brakes)


    Object Number: 180427  Size: LF
    (1)Differential Drive Pinion Gear Nut
    (2)Differential Drive Pinion Gear Washer
    (3)Differential Drive Pinion Gear Yoke
    (5)Differential Drive Pinion Gear Dirt Deflector
    (6)Differential Drive Pinion Gear Seal
    (7)Differential Drive Pinion Gear Outer Bearing
    (8)Differential Drive Pinion Gear Bearing Spacer
    (9)Rear Axle Housing Drain Plug
    (10)Rear Axle Housing
    (11)Rear Axle Vent
    (12)Wheel Speed Sensor
    (13)Rear Wheel Speed Sensor Bolt/Screw
    (14)Differential Drive Pinion Gear Inner Bearing
    (15)Differential Drive Pinion Gear Shim
    (16)Differential Drive Pinion Gear
    (17)Rear Axle Housing Cover Gasket
    (18)Rear Axle Housing Chip Collector Magnet
    (19)Rear Axle Housing Cover
    (20)Rear Axle Housing Cover Bolt/Screw
    (21)Rear Brake Backing Plate Nut
    (22)Rear Wheel Bearing
    (23)Rear Wheel Bearing Seal
    (24)Rear Brake Backing Plate
    (25)Rear Brake Backing Plate Bolt/Screw
    (26)Rear Axle Shaft Lock
    (27)Rear Axle Shaft
    (28)Rear Wheel Bolt
    (29)Rear Brake
    (30)Rear Brake Drum
    or

    Rear Axle With Antilock Brake and Traction Control Systems


    Object Number: 180429  Size: LF
    (1)Differential Drive Pinion Gear Nut
    (2)Differential Drive Pinion Gear Washer
    (3)Differential Drive Pinion Gear Yoke
    (5)Differential Drive Pinion Gear Dirt Deflector
    (6)Differential Drive Pinion Gear Seal
    (7)Differential Drive Pinion Gear Outer Bearing
    (8)Differential Drive Pinion Gear Bearing Spacer
    (9)Rear Axle Housing Drain Plug
    (10)Rear Axle Housing
    (11)Rear Axle Vent
    (12)Differential Drive Pinion Gear Inner Bearing
    (13)Differential Drive Pinion Gear Shim
    (14)Differential Drive Pinion Gear
    (15)Rear Axle Housing Cover Gasket
    (16)Rear Axle Housing Chip Collector Magnet
    (17)Rear Axle Housing Cover
    (18)Rear Axle Housing Cover Bolt/Screw
    (19)Rear Brake Backing Plate Nut
    (20)Rear Wheel Bearing
    (21)Rear Wheel Bearing Seal
    (22)Rear Axle Tube Flange Shim
    (23)Rear Brake Caliper Bolt/Screw
    (24)Rear Brake Caliper Mounting Plate
    (25)Rear Brake Caliper Mounting Plate Bolt/Screw
    (26)Wheel Speed Sensor
    (27)Rear Brake Caliper
    (28)Rear Axle Shaft Lock
    (29)Rear Axle Shaft
    (30)Rear Wheel Speed Sensor Reluctor Wheel
    (31)Rear Wheel Bolt
    (32)Rear Brake Rotor

  6. Remove the rear shock absorbers. Refer to Shock Absorber Replacement
  7. Remove the rear axle track bar. Refer to Rear Axle Tie Rod Replacement
  8. Remove the rear brake (center) hose from the rear brake hose junction block.
  9. Remove the rear springs. Refer to Coil Spring Replacement
  10. Remove the parking brake cables from the rear axle housing.
  11. If the vehicle is equipped with disc brakes, disconnect the electrical connectors from the rear wheel sensor.
  12. Remove the rear axle torque arm. Refer to Torque Arm Replacement
  13. Remove the rear axle lower control arm. Refer to Rear Axle Lower Control Arm Replacement
  14. Use the aid of a helper in order to remove the rear axle housing.
  15. Refer to

    Rear Axle With Antilock Brake System (Drum Brakes)


    Object Number: 180427  Size: LF
    (1)Differential Drive Pinion Gear Nut
    (2)Differential Drive Pinion Gear Washer
    (3)Differential Drive Pinion Gear Yoke
    (5)Differential Drive Pinion Gear Dirt Deflector
    (6)Differential Drive Pinion Gear Seal
    (7)Differential Drive Pinion Gear Outer Bearing
    (8)Differential Drive Pinion Gear Bearing Spacer
    (9)Rear Axle Housing Drain Plug
    (10)Rear Axle Housing
    (11)Rear Axle Vent
    (12)Wheel Speed Sensor
    (13)Rear Wheel Speed Sensor Bolt/Screw
    (14)Differential Drive Pinion Gear Inner Bearing
    (15)Differential Drive Pinion Gear Shim
    (16)Differential Drive Pinion Gear
    (17)Rear Axle Housing Cover Gasket
    (18)Rear Axle Housing Chip Collector Magnet
    (19)Rear Axle Housing Cover
    (20)Rear Axle Housing Cover Bolt/Screw
    (21)Rear Brake Backing Plate Nut
    (22)Rear Wheel Bearing
    (23)Rear Wheel Bearing Seal
    (24)Rear Brake Backing Plate
    (25)Rear Brake Backing Plate Bolt/Screw
    (26)Rear Axle Shaft Lock
    (27)Rear Axle Shaft
    (28)Rear Wheel Bolt
    (29)Rear Brake
    (30)Rear Brake Drum
    or

    Rear Axle With Antilock Brake and Traction Control Systems


    Object Number: 180429  Size: LF
    (1)Differential Drive Pinion Gear Nut
    (2)Differential Drive Pinion Gear Washer
    (3)Differential Drive Pinion Gear Yoke
    (5)Differential Drive Pinion Gear Dirt Deflector
    (6)Differential Drive Pinion Gear Seal
    (7)Differential Drive Pinion Gear Outer Bearing
    (8)Differential Drive Pinion Gear Bearing Spacer
    (9)Rear Axle Housing Drain Plug
    (10)Rear Axle Housing
    (11)Rear Axle Vent
    (12)Differential Drive Pinion Gear Inner Bearing
    (13)Differential Drive Pinion Gear Shim
    (14)Differential Drive Pinion Gear
    (15)Rear Axle Housing Cover Gasket
    (16)Rear Axle Housing Chip Collector Magnet
    (17)Rear Axle Housing Cover
    (18)Rear Axle Housing Cover Bolt/Screw
    (19)Rear Brake Backing Plate Nut
    (20)Rear Wheel Bearing
    (21)Rear Wheel Bearing Seal
    (22)Rear Axle Tube Flange Shim
    (23)Rear Brake Caliper Bolt/Screw
    (24)Rear Brake Caliper Mounting Plate
    (25)Rear Brake Caliper Mounting Plate Bolt/Screw
    (26)Wheel Speed Sensor
    (27)Rear Brake Caliper
    (28)Rear Axle Shaft Lock
    (29)Rear Axle Shaft
    (30)Rear Wheel Speed Sensor Reluctor Wheel
    (31)Rear Wheel Bolt
    (32)Rear Brake Rotor

Installation Procedure

  1. Use the aid of a helper in order to install the rear axle housing (10).
  2. Refer to

    Rear Axle With Antilock Brake System (Drum Brakes)


    Object Number: 180427  Size: LF
    (1)Differential Drive Pinion Gear Nut
    (2)Differential Drive Pinion Gear Washer
    (3)Differential Drive Pinion Gear Yoke
    (5)Differential Drive Pinion Gear Dirt Deflector
    (6)Differential Drive Pinion Gear Seal
    (7)Differential Drive Pinion Gear Outer Bearing
    (8)Differential Drive Pinion Gear Bearing Spacer
    (9)Rear Axle Housing Drain Plug
    (10)Rear Axle Housing
    (11)Rear Axle Vent
    (12)Wheel Speed Sensor
    (13)Rear Wheel Speed Sensor Bolt/Screw
    (14)Differential Drive Pinion Gear Inner Bearing
    (15)Differential Drive Pinion Gear Shim
    (16)Differential Drive Pinion Gear
    (17)Rear Axle Housing Cover Gasket
    (18)Rear Axle Housing Chip Collector Magnet
    (19)Rear Axle Housing Cover
    (20)Rear Axle Housing Cover Bolt/Screw
    (21)Rear Brake Backing Plate Nut
    (22)Rear Wheel Bearing
    (23)Rear Wheel Bearing Seal
    (24)Rear Brake Backing Plate
    (25)Rear Brake Backing Plate Bolt/Screw
    (26)Rear Axle Shaft Lock
    (27)Rear Axle Shaft
    (28)Rear Wheel Bolt
    (29)Rear Brake
    (30)Rear Brake Drum
    or

    Rear Axle With Antilock Brake and Traction Control Systems


    Object Number: 180429  Size: LF
    (1)Differential Drive Pinion Gear Nut
    (2)Differential Drive Pinion Gear Washer
    (3)Differential Drive Pinion Gear Yoke
    (5)Differential Drive Pinion Gear Dirt Deflector
    (6)Differential Drive Pinion Gear Seal
    (7)Differential Drive Pinion Gear Outer Bearing
    (8)Differential Drive Pinion Gear Bearing Spacer
    (9)Rear Axle Housing Drain Plug
    (10)Rear Axle Housing
    (11)Rear Axle Vent
    (12)Differential Drive Pinion Gear Inner Bearing
    (13)Differential Drive Pinion Gear Shim
    (14)Differential Drive Pinion Gear
    (15)Rear Axle Housing Cover Gasket
    (16)Rear Axle Housing Chip Collector Magnet
    (17)Rear Axle Housing Cover
    (18)Rear Axle Housing Cover Bolt/Screw
    (19)Rear Brake Backing Plate Nut
    (20)Rear Wheel Bearing
    (21)Rear Wheel Bearing Seal
    (22)Rear Axle Tube Flange Shim
    (23)Rear Brake Caliper Bolt/Screw
    (24)Rear Brake Caliper Mounting Plate
    (25)Rear Brake Caliper Mounting Plate Bolt/Screw
    (26)Wheel Speed Sensor
    (27)Rear Brake Caliper
    (28)Rear Axle Shaft Lock
    (29)Rear Axle Shaft
    (30)Rear Wheel Speed Sensor Reluctor Wheel
    (31)Rear Wheel Bolt
    (32)Rear Brake Rotor
    .

  3. Install the rear axle lower control arms. Refer to Rear Axle Lower Control Arm Replacement
  4. Install the rear axle torque arm. Refer to Torque Arm Replacement
  5. Connect the electrical connectors to the rear wheel sensor.
  6. Install the parking brake cables to the rear axle housing.
  7. Install the rear springs. Refer to Coil Spring Replacement
  8. Install the rear brake (center) hose to the rear brake hose junction block.
  9. Install the rear axle track bar. Refer to Rear Axle Tie Rod Replacement
  10. Install the rear shock absorbers. Refer to Shock Absorber Replacement
  11. Remove the lifting device from the rear axle housing.
  12. Refer to

    Rear Axle With Antilock Brake System (Drum Brakes)


    Object Number: 180427  Size: LF
    (1)Differential Drive Pinion Gear Nut
    (2)Differential Drive Pinion Gear Washer
    (3)Differential Drive Pinion Gear Yoke
    (5)Differential Drive Pinion Gear Dirt Deflector
    (6)Differential Drive Pinion Gear Seal
    (7)Differential Drive Pinion Gear Outer Bearing
    (8)Differential Drive Pinion Gear Bearing Spacer
    (9)Rear Axle Housing Drain Plug
    (10)Rear Axle Housing
    (11)Rear Axle Vent
    (12)Wheel Speed Sensor
    (13)Rear Wheel Speed Sensor Bolt/Screw
    (14)Differential Drive Pinion Gear Inner Bearing
    (15)Differential Drive Pinion Gear Shim
    (16)Differential Drive Pinion Gear
    (17)Rear Axle Housing Cover Gasket
    (18)Rear Axle Housing Chip Collector Magnet
    (19)Rear Axle Housing Cover
    (20)Rear Axle Housing Cover Bolt/Screw
    (21)Rear Brake Backing Plate Nut
    (22)Rear Wheel Bearing
    (23)Rear Wheel Bearing Seal
    (24)Rear Brake Backing Plate
    (25)Rear Brake Backing Plate Bolt/Screw
    (26)Rear Axle Shaft Lock
    (27)Rear Axle Shaft
    (28)Rear Wheel Bolt
    (29)Rear Brake
    (30)Rear Brake Drum
    or

    Rear Axle With Antilock Brake and Traction Control Systems


    Object Number: 180429  Size: LF
    (1)Differential Drive Pinion Gear Nut
    (2)Differential Drive Pinion Gear Washer
    (3)Differential Drive Pinion Gear Yoke
    (5)Differential Drive Pinion Gear Dirt Deflector
    (6)Differential Drive Pinion Gear Seal
    (7)Differential Drive Pinion Gear Outer Bearing
    (8)Differential Drive Pinion Gear Bearing Spacer
    (9)Rear Axle Housing Drain Plug
    (10)Rear Axle Housing
    (11)Rear Axle Vent
    (12)Differential Drive Pinion Gear Inner Bearing
    (13)Differential Drive Pinion Gear Shim
    (14)Differential Drive Pinion Gear
    (15)Rear Axle Housing Cover Gasket
    (16)Rear Axle Housing Chip Collector Magnet
    (17)Rear Axle Housing Cover
    (18)Rear Axle Housing Cover Bolt/Screw
    (19)Rear Brake Backing Plate Nut
    (20)Rear Wheel Bearing
    (21)Rear Wheel Bearing Seal
    (22)Rear Axle Tube Flange Shim
    (23)Rear Brake Caliper Bolt/Screw
    (24)Rear Brake Caliper Mounting Plate
    (25)Rear Brake Caliper Mounting Plate Bolt/Screw
    (26)Wheel Speed Sensor
    (27)Rear Brake Caliper
    (28)Rear Axle Shaft Lock
    (29)Rear Axle Shaft
    (30)Rear Wheel Speed Sensor Reluctor Wheel
    (31)Rear Wheel Bolt
    (32)Rear Brake Rotor

  13. Install the rear stabilizer shaft. Refer to Stabilizer Shaft Replacement
  14. Install the propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement
  15. Bleed the brake system. Refer to Hydraulic Brake System Bleeding
  16. Install the rear tires and wheels. Refer to Wheel Removal