Installation Procedure

2020 GMC Sierra 2500 HD AT4, 6.6L Eng VIN YSECTION Installation Procedure
  1. GM5354643Courtesy of GENERAL MOTORS COMPANY

    Rear Axle (1) - Install

  2. Remove the suitable lifting device.
  3. GM5040096Courtesy of GENERAL MOTORS COMPANY

    Rear Spring Anchor Plate - Install Rear Spring Anchor Plate Replacement (with Dual Rear Wheels) , or Rear Spring Anchor Plate Replacement (with Single Rear Wheels)

  4. GM5034614Courtesy of GENERAL MOTORS COMPANY

    Rear Shock Absorber - Install Rear Shock Absorber Replacement

  5. GM5342044Courtesy of GENERAL MOTORS COMPANY

    Rear Axle Vent Hose (1) @ Rear Axle Vent Hose Connector (2) - Connect

  6. GM5281383Courtesy of GENERAL MOTORS COMPANY

    Parking Brake Actuator Splash Shield - Outer - Install - Parking Brake Actuator Splash Shield Replacement - Outer

  7. GM5153258Courtesy of GENERAL MOTORS COMPANY

    Chassis Rear Wiring Harness Bracket Bolt - Both Sides (1) - Install [6x] - Rear Wheel Speed Sensor Replacement

  8. Rear Wheel Speed Sensor @ Wheel - Install - Rear Wheel Speed Sensor Replacement
  9. GM5026007Courtesy of GENERAL MOTORS COMPANY

    Rear Brake Rotor - Install - Rear Brake Rotor Replacement (With DZW) , or Rear Brake Rotor Replacement (Without DZW)

  10. Install the rear brake caliper and bracket assemblies. Rear Brake Caliper Bracket Replacement
  11. GM5223907Courtesy of GENERAL MOTORS COMPANY

    Rear Brake Hose - Install [3x] - Rear Brake Hose Replacement

  12. Install the rear tire and wheel assemblies. Tire and Wheel Removal and Installation (Rear with Dual Wheels) , or Tire and Wheel Removal and Installation (with Single Wheels)
  13. Propeller Shaft - Install - Propeller Shaft Replacement (with 4 Bolt Flange) , or Propeller Shaft Replacement (with 8 Bolt Flange)
  14. Fill the axle with lubricant. Use the proper fluid. Approximate Fluid Capacities , Fluid and Lubricant Recommendations
  15. Remove the utility stands.
  16. Lower the vehicle.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.