GM Service Manual Online
For 1990-2009 cars only

Discharge Hose Replacement LX9

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

Important: Cap or tape the open air conditioning (A/C) components immediately in order to prevent system contamination.


    Object Number: 1713521  Size: SH
  1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .
  2. Remove the A/C discharge hose to A/C condenser bolt.
  3. Remove the A/C discharge hose from the A/C condenser.
  4. Remove and discard the sealing washer.
  5. Remove the radiator air baffle. Refer to Radiator Air Baffle Assemblies and Deflectors.

  6. Object Number: 1713518  Size: SH
  7. Remove the A/C discharge hose to A/C compressor nut.
  8. Remove the A/C discharge hose from the A/C compressor.
  9. Remove and discard the sealing washer.
  10. Disconnect the A/C pressure sensor electrical connector.
  11. Remove the A/C discharge hose (2).

  12. Object Number: 1713524  Size: SH
  13. Remove the A/C pressure sensor.
  14. Remove and discard the A/C pressure sensor O-ring.

Installation Procedure


    Object Number: 1713524  Size: SH
  1. Install a NEW O-ring to the A/C discharge hose.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the A/C pressure sensor.
  4. Tighten
    Tighten to 5 N·m (44 lb in).


    Object Number: 1713518  Size: SH
  5. Install new sealing washers to the A/C discharge hose. Refer to Sealing Washer Replacement .
  6. Remove the cap or tape from the A/C compressor discharge port.
  7. Install the A/C discharge hose (2) to the A/C compressor.
  8. Install the A/C discharge hose to A/C compressor nut.
  9. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  10. Install the radiator air baffle. Refer to Radiator Air Baffle Assemblies and Deflectors.

  11. Object Number: 1713521  Size: SH
  12. Remove the cap or tape from the discharge port on the A/C condenser.
  13. Install the A/C discharge hose to the A/C condenser.
  14. Install the A/C discharge hose to A/C condenser bolt.
  15. Tighten
    Tighten the bolt to 16 N·m (12 lb ft).

  16. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  17. Leak test the fittings of the A/C components using the J 39400-A .

Discharge Hose Replacement LZ9

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

Important: Cap or tape the open air conditioning (A/C) components immediately in order to prevent system contamination.


    Object Number: 1713521  Size: SH
  1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .
  2. Remove the A/C discharge hose to A/C condenser bolt.
  3. Remove the A/C discharge hose from the A/C condenser.
  4. Remove and discard the sealing washer.
  5. Remove the radiator air baffle. Refer to Radiator Air Baffle Assemblies and Deflectors .

  6. Object Number: 1713517  Size: SH
  7. Remove the A/C discharge hose to A/C compressor nut.
  8. Remove the A/C discharge hose (2) from the A/C compressor.
  9. Remove and discard the sealing washer.
  10. Disconnect the A/C pressure sensor electrical connector.
  11. Remove the discharge hose (2).

  12. Object Number: 1713524  Size: SH
  13. Remove the A/C pressure sensor.
  14. Remove and discard the A/C pressure sensor O-ring.

Installation Procedure


    Object Number: 1713524  Size: SH
  1. Install a new O-ring to the A/C discharge hose.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the A/C pressure sensor.
  4. Tighten
    Tighten to 5 N·m (44 lb in).


    Object Number: 1713517  Size: SH
  5. Install new sealing washers to the A/C discharge hose (2). Refer to Sealing Washer Replacement .
  6. Remove the cap or tape from the A/C compressor discharge port.
  7. Install the A/C discharge hose (2) to the A/C compressor.
  8. Install the A/C discharge hose (2) to A/C compressor nut.
  9. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  10. Install the radiator air baffle. Refer to Radiator Air Baffle Assemblies and Deflectors .

  11. Object Number: 1713521  Size: SH
  12. Remove the cap or tape from the discharge port on the A/C condenser.
  13. Install the A/C discharge hose to the A/C condenser.
  14. Install the A/C discharge hose to A/C condenser bolt.
  15. Tighten
    Tighten the bolt to 16 N·m (12 lb ft).

  16. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  17. Leak test the fittings of the A/C components using the J 39400-A .