GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2006 🢒 H3 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Air Conditioning Compressor Replacement

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure
  1. Recover the air conditioner (A/C) refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the drive belt. Refer to Drive Belt Replacement .
  3. Remove the cooling fan and shroud. Refer to Fan Replacement .
  4. Disconnect the A/C compressor electrical connector.
  5. Remove the left front tire. Refer to Tire and Wheel Removal and Installation .
  6. Remove the left front wheelhouse panel. Refer to Wheelhouse Panel Replacement .

    7. Important: Some system pressure may still exist in the A/C compressor crankcase after you evacuate the system.


    Object Number: 1562448 Size: SH
  7. Remove the A/C discharge hose bolt 2 from the A/C compressor.
  8. Remove the A/C suction hose bolt 3 from the compressor.
  9. Remove the A/C compressor hoses (1,4) from the A/C compressor.
  10. Remove and discard the sealing washers.

    11. Object Number: 1559929 Size: SH
  11. Remove the A/C compressor mounting bolts from the A/C compressor.
  12. Remove the A/C compressor from the vehicle.
  13. Drain and measure the A/C compressor oil. Refer to Air Conditioning Compressor Oil Balancing .

Installation Procedure
  1. Adjust the proper amount of oil to the replacement compressor. Refer to Refrigerant System Capacities .

    2. Object Number: 1559929 Size: SH
  2. Install A/C the compressor to the vehicle.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the A/C compressor mounting bolts.

    4. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 1562448 Size: SH
  4. Install new sealing washers to the A/C hoses.
  5. Install the A/C compressor hoses to the A/C compressor.
  6. Install the A/C suction hose bolt (3).
  7. Install the A/C discharge hose bolt.

    8. Tighten
    Tighten the bolts to 33 N·m (24 lb ft).

  8. Connect the compressor electrical connectors.
  9. Install the cooling fan and shroud. Refer to Fan Replacement .
  10. Install the drive belt. Refer to Drive Belt Replacement .
  11. Install the left front wheelhouse liner. Refer to Wheelhouse Panel Replacement .
    12. ⇒Install the left front tire. Refer to Tire and Wheel Removal and Installation .
  12. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  13. Using J 39400-A leak test the fittings .