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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1331 (Rear Drive Axle) >> Repair Instructions >> Rear Axle Replacement (15/25 Series) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Rear Axle, Spacers, Spring Plates & U-Bolts
    GM348393Courtesy of GENERAL MOTORS CORP.
  1. Place the rear axle assembly under the vehicle.
  2. Align the rear axle assembly with the springs.
  3. Connect the spacers, the spring plates and the U-bolts to the rear axle.
  4. Raise the rear axle assembly into position.
    5. CAUTION: Refer to Fastener Caution .
  5. Install the washers if equipped and the nuts to the U-bolts.

    Tighten: 

    • 15 Series tighten the nuts in a criss cross pattern to 72 N.m (53 lb ft).
    • 25 series tighten the nuts in a criss cross pattern to 150 N.m (110 lb ft).

  6. Install the vent hose to the rear axle vent fitting. Refer to Vent Hose Replacement .
  7. Connect the shock absorbers to the rear axle. Refer to Shock Absorber Replacement (2500, 3500) or Shock Absorber Replacement (1500) .
  8. Install the brake calipers. Refer to Rear Brake Caliper Replacement (JD9) or Rear Brake Caliper Replacement (JH6, JH7) .
  9. Install the brake lines and the brake line bracket bolts to the axle.
  10. Connect the parking brake cable. Refer to Parking Brake Rear Cable Replacement - Left Side (JF3, JF7) or Parking Brake Rear Cable Replacement - Left Side (JD9) and Parking Brake Rear Cable Replacement - Right Side (JF3, JF7) or Parking Brake Rear Cable Replacement - Right Side (JD9) .
  11. Install the tire and wheel assemblies. Refer to Tire and Wheel Removal and Installation .
  12. Connect the propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-Piece Propeller Shaft Replacement .
  13. Fill the axle with lubricant. Use the proper fluid. Refer to Approximate Fluid Capacities and Fluid and Lubricant Recommendations (USA and Canada) .
  14. Remove the utility stands.
  15. Lower the vehicle.
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