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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Rear Drive Axle >> Repair Instructions >> Rear Axle Replacement >> Removal Procedure

Removal Procedure

    Fig 1: Rear Axle Vent Hose & Vent Tube
    GM796012Courtesy of GENERAL MOTORS CORP.
  1. Depressurize the air suspension system, if equipped. Refer to Air Suspension Depressurization .
  2. Disable the park brake cable automatic adjuster. Refer to Parking Brake Cable Adjuster Disabling .
  3. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  4. Place jack stands at the front of the vehicle.
  5. Support the rear axle with jack stands.
  6. Remove the rear tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation .
  7. Disconnect the rear axle vent tube (1).
  8. Remove the rear propeller shaft. Refer to Rear Propeller Shaft Replacement .
    9. Fig 2: Cable, Lever & Backing Plate
    GM793127Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the left-rear park brake cable (3) from the backing plate (1), the park brake actuator (2), and the cable guide at the rear axle.
    10. Fig 3: Track Bar & Clips
    GM793129Courtesy of GENERAL MOTORS CORP.
  10. Remove the park brake cable clips (1) from the track bar.
  11. Disconnect the right-rear park brake cable (2) from the backing plate, the park brake actuator, and from the cable guide at the rear axle.
    12. Fig 4: Brake Crossover Pipe, Wheel Speed Sensor Harness & Electronic Locker Harness
    GM913408Courtesy of GENERAL MOTORS CORP.
  12. Remove the brake crossover pipe bracket bolt.
  13. Remove the brake crossover pipe, wheel speed sensor harness, and electronic locker harness from the rear axle and secure them to the body or frame.
    14. Fig 5: View Of Brake Caliper & Brake Caliper Bracket
    GM924321Courtesy of GENERAL MOTORS CORP.
    NOTE: Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.
  14. Remove the brake caliper and bracket assemblies from the rear axle and support them with heavy mechanics wire or equivalent. DO NOT disconnect the hydraulic brake flexible hose from the caliper.
    15. Fig 6: Rear Stabilizer Shaft Insulator Bracket Bolts
    GM913402Courtesy of GENERAL MOTORS CORP.
  15. Remove the rear stabilizer shaft insulator bracket bolts (2) from the rear axle.
  16. Pivot the stabilizer shaft (1) to the rear and secure it out of the way.
    17. Fig 7: Track Bar & Rear Axle
    GM913437Courtesy of GENERAL MOTORS CORP.
  17. Disconnect the track bar from the rear axle and suspend it out of the way.
  18. Disconnect the lower control arms from the rear axle. Refer to Rear Axle Lower Control Arm Replacement .
  19. Disconnect the upper control arms from the rear axle. Refer to Rear Axle Upper Control Arm Replacement .
  20. Remove the lower shock nuts and bolts from the rear axle shock bracket.
  21. Remove the coil springs, if equipped. Refer to Coil Spring Replacement .

    If equipped with air suspension, the air springs will remain attached to the frame and will not need to be removed.

  22. Remove the rear axle assembly from the vehicle.
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