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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1738 (HEATING, VENTILATION, AND AIR CONDITIONING)REPAIR INSTRUCTIONSAIR CONDITIONING COMPRESSOR REPLACEMENT (LY7)INSTALLATION PROCEDURE
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Installation Procedure

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Installation Procedure
WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the compressor.
  2. Raise and support the vehicle.
    3. Fig 1: View Of Compressor
    GM1563412Courtesy of GENERAL MOTORS CORP.
  3. Install the compressor mounting bolts.
    4. CAUTION: Refer to Fastener Caution .
  4. Tighten the compressor mounting bolts and tighten to 25 N.m (18 lb ft).
  5. Connect the electrical connector.
    6. Fig 2: View Of Suction Line Bolt & Discharge Line Bolt At Compressor
    GM1563410Courtesy of GENERAL MOTORS CORP.
  6. Install new O-ring seals to the line fittings. Refer to O-Ring Replacement .
  7. Connect the suction line to the compressor.
  8. Install the suction line bolt (1) and tighten to 9.8 N.m (87 lb in).
  9. Connect the discharge line to the compressor
  10. Install the discharge line bolt (2) and tighten to 9.8 N.m (87 lb in).
  11. Install the engine splash shield. Refer to Air Inlet Grille Panel Replacement .
  12. Install the LH wheel and tire. Refer to Tire and Wheel Removal and Installation .
  13. Lower the vehicle.
  14. Reposition and install the power steering reservoir. Refer to Remote Power Steering Fluid Reservoir Replacement (LY7) or Remote Power Steering Fluid Reservoir Replacement (LH2) .
  15. Install the drive belt tensioner. Refer to Air Conditioning Compressor and Power Steering Pump Belt Tensioner Replacement .
  16. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  17. Evacuate and recharge the refrigerant system. Refer to Refrigerant Recovery and Recharging .
  18. Using J 39400-A  , leak test the fitting of the repaired or reinstalled component. See Special Tools .
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:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.