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Installation Procedure

  1. GM6464426Courtesy of GENERAL MOTORS COMPANY

    Automatic Level Control Air Compressor Tube (1) - Install

  2. GM6464425Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Automatic Level Control Air Compressor Tube (1) @ Automatic Level Control Air Compressor - Install and tighten - Fastener Specifications 

  3. GM6464424Courtesy of GENERAL MOTORS COMPANY

    Automatic Level Control Air Compressor Tube (1) @Air Suspension Controller - Install and tighten - Fastener Specifications 

  4. GM6445094Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Connect

  5. GM6305013Courtesy of GENERAL MOTORS COMPANY

    Rear Wheelhouse Panel Rear Liner (1) - Install - Rear Wheelhouse Panel Rear Liner Replacement

  6. GM6452604Courtesy of GENERAL MOTORS COMPANY

    Remove the automatic level control air supply reservoir coupling cap (1).

  7. NOTE:

    Fill the front air bags first.

  8. Install CH-52667  Air Spring Inflator to the automatic level control air supply reservoir air valve and set the regulator on the nitrogen tank to 15 Bar (217.55 PSI).
  9. Using CH-52667  Air Spring Inflator, open the valve on the pressure gage to fill the automatic level control air supply reservoir.
  10. Using CH-52667  Air Spring Inflator and the shop nitrogen tank, fill the automatic level control air supply reservoir to 15 Bar (217.55 PSI).
  11. Partially lower the vehicle, but DO NOT let the wheels touch the ground.
  12. NOTE:

    The vehicle must be in Maintenance Mode.

  13. Using GDS2 tool, use short-term inflate to increase pressure to the air springs:
    • Front: 5.5 Bar (80 PSI)
    • Rear: 5.5 Bar (80 PSI)
  14. Using GDS2, verify automatic level control air supply tank pressure is at 15 Bar (217.55 PSI), if not repeat steps 4 - 9.
  15. Close the pressure gauge valve and remove CH-52667  Air Spring Inflator from the automatic level control air supply reservoir.
  16. Install the automatic level control air supply reservoir coupling cap (1) and tighten. Fastener Specifications .
  17. Install underbody panels as necessary. Underbody Panel Component Locator
  18. Install the right rear tire and wheel assembly. Tire and Wheel Removal and Installation