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Home >> Cadillac >> 2019 >> XTS Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 44 (Suspension Control System - Suspension Leveling) >> Repair Instructions >> Automatic Level Control Air Compressor Tube Replacement >> Installation Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Installation Procedure

WARNING: This page is about a different car, the 2018 Cadillac XTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM2850187Courtesy of GENERAL MOTORS COMPANY

    Position the air compressor tubes (1) in the vehicle.

  2. GM2850269Courtesy of GENERAL MOTORS COMPANY

    Install the 3 air compressor tubes retainers (2) to the cross member.

  3. Install the 2 air compressor tubes retainers (1) to the frame rail.
  4. For AWD vehicles, raise the differential carrier assembly into place. Differential Carrier Assembly Replacement
  5. Install the new air compressor tube fittings to the rear air springs and the rear air spring compressor and insert air tubes into new fittings. Automatic Level Control Air Compressor Tube Fitting Replacement 
  6. CAUTION:

    Do NOT pressurize the air springs/shocks under load or damage to the air spring/shocks will occur. Always pressurize the system with the wheels of the vehicle off the ground.

  7. Lower the vehicle, but DO NOT allow the tires assemblies to touch the ground.
  8. Pressurize the air suspension system. Air Suspension System Depressurization and Pressurization 
  9. Continue to lower the vehicle to load suspension.
  10. Start the vehicle and run for approximately (1) minute to ensure the air spring is completely pressurized and functioning properly.
  11. Raise the vehicle and with a squirt bottle filled a soapy water solution, check for leaks at all fitting areas, repair if necessary.
  12. Lower the vehicle.