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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different car >> Section 757 (Rear Suspension System) >> Repair Instructions >> Rear Axle Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the rear coil spring lower insulators to the axle.
  2. Install the axle brackets to the axle bushings, with the alignment slot on the outboard side.
    3. IMPORTANT: The axle bushing through bolts must be installed with the bolt head facing inboard.
  3. Loosely install the bushing bolts and nuts.
  4. Place the axle on the hydraulic lift table.
  5. Raise the axle into position.
    6. Fig 1: View Of Rear Axle Bushing Bracket
    GM855059Courtesy of GENERAL MOTORS CORP.
  6. Hand tighten the axle bracket to body bolts just enough to hold the brackets flush to the body.
    7. IMPORTANT: The axle through bolts must be tightened with the axle at the correct trim height and prior to torquing the axle bracket to body bolts.
  7. Using the lift table, raise the axle to the proper trim height specification by measuring the vertical distance between the bottom edge of the upper spring seat and the bottom of the notch in the lower spring seat. Refer to Trim Height Inspection for D height measurement.
    8. NOTE: Refer to Fastener Notice .
  8. Tighten the axle bushing through bolts.

    Tighten:  Tighten the bolts to 90 N.m (66 lb ft) plus 60 degrees.

  9. Insert two 12 mm diameter pins through the axle brackets into the underbody.
    10. Fig 2: View Of Left Side Of Axle Bracket
    GM855056Courtesy of GENERAL MOTORS CORP.
  10. Align the left side axle bracket and snug down the bolts.
    11. Fig 3: View Of Right Side Of Axle Bracket
    GM855058Courtesy of GENERAL MOTORS CORP.
  11. Align the right side axle bracket and snug down the bolts.
  12. Tighten all the bracket to body bolts.

    Tighten:  Tighten the bolts to 90 N.m (66 lb ft) plus 45 degrees.

  13. Install the wheel bearing/hubs, with the brakes and backing plate assemblies.
    14. Fig 4: Identifying Wheel Bearing/Hubs
    GM888335Courtesy of GENERAL MOTORS CORP.
  14. Install the bearing/hub nuts.

    Tighten:  Tighten the nuts to 45 N.m (33 lb ft) plus 30 degrees.

  15. Connect the brake hoses to the rear axle brackets.
  16. Connect the brake pipes to the brake hoses at the axle.

    Tighten:  Tighten the brake pipe fittings to 19 N.m (14 lb ft).

    17. Fig 5: View Of Coil Spring
    GM855051Courtesy of GENERAL MOTORS CORP.
  17. Install the rear coil springs. Refer to Coil Spring Replacement .
    18. Fig 6: View Of Shock Absorber
    GM855039Courtesy of GENERAL MOTORS CORP.
  18. Install the lower shock bolts. Refer to Shock Absorber Replacement .
  19. Lower and remove the hydraulic lift table.
  20. If applicable, connect the ABS sensor harness connector and harness to axle retainer.
  21. Connect the park brake cables to the axle brackets and rear brakes. Refer to Parking Brake Rear Cable Replacement (Drum) or Parking Brake Rear Cable Replacement (Disc) .
  22. Bleed the brake system. Refer to Hydraulic Brake System Bleeding (Pressure) or Hydraulic Brake System Bleeding (Manual) .
  23. Install the rear wheels. Refer to Tire and Wheel Removal and Installation .
  24. Verify the rear wheel alignment. Refer to Wheel Alignment Specifications .
  25. Lower the vehicle.
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