Installation Procedure

2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION Installation Procedure
WARNING: This page is about a different car, the 2018 GMC Savana 3500, 2018 GMC Savana 2500, 2018 Chevrolet Express 3500, and 2018 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. GM818438

    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.

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