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Home >> GMC >> 2001 >> C3500 HD 8.1 G, Standard >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Electronic Suspension - Suspension Damping & Automatic Level Control >> Repair Instructions >> Automatic Level Control Air Compressor Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Air Compressor & Air Inlet Hose
    GM657691Courtesy of GENERAL MOTORS COMPANY
  1. Install the air compressor (2) to the vehicle.
  2. Refer to FASTENER NOTICE in Cautions and Notices.

    Slide the air compressor forward to secure the fasteners into the frame slots and tighten the mounting nuts.

    Tighten 

    Tighten the nuts to 15 N.m (11 lb ft).

  3. Install the air inlet hose (1) to the fuel filler neck bracket.
    4. Fig 2: Air Tube At Air Dryer & Electrical Connection
    GM657695Courtesy of GENERAL MOTORS COMPANY
  4. Connect the air tube (1) to the air dryer.
  5. Connect the electrical connection (2).
    6. IMPORTANT:

    Before driving the vehicle, turn the ignition on and wait approximately 45 seconds. This will ensure that the air adjustable shock absorbers are filled with residual pressure.

  6. Lower the vehicle.
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