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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Heating, Ventilation, And Air Conditioning System) >> Repair Instructions >> Air Conditioning System Seal Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT:

    Flat washer type seals do not require lubrication.

  1. Inspect the new seal washer for any signs of cracks, cuts, or damage.

    Do not use a damaged seal washer.

  2. Remove the cap or tape from the A/C refrigerant components.
  3. GM818438Courtesy of GENERAL MOTORS COMPANY

    Using a lint-free clean, dry cloth, clean the sealing surfaces of the A/C refrigerant components.

  4. Carefully install the new seal washer onto the A/C refrigerant component.

    The washer must completely bottom against the surface of the fitting.

    5. IMPORTANT:

    After tightening the A/C components, there should be a slight sealing washer gap of approximately 1.2 mm (3/64 in) between the A/C line and the A/C component.

  5. Assemble the remaining A/C refrigerant components. Refer to the appropriate repair procedure.
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