GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2007 🢒 STS 🢒 HVAC 🢒 Heating, Ventilation, and Air Conditioning 🢒 Liquid Line Replacement

Liquid Line Replacement LY7/LLT

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedure
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
  2. Remove the air cleaner from the vehicle. Refer to Air Cleaner Assembly Replacement.
  3. Disconnect the quick connect fitting at the condenser tube. Refer to Air Conditioning Line/Tube Connector Removal/Replacement.

    4. Object Number: 1570363 Size: SH
  4. Disconnect the liquid line from the strut tower retaining clip.
  5. Remove the windshield wiper transmission. Refer to Windshield Wiper Transmission Replacement.

    6. Object Number: 1570765 Size: SH
  6. Disconnect the quick connect fitting at the evaporator core. Refer to Air Conditioning Line/Tube Connector Removal/Replacement.
  7. Disconnect the liquid line from the evaporator core.
  8. Remove the liquid line from the vehicle.
  9. Remove and discard the O-ring seals.

Installation Procedure
  1. Install new O-rings to the liquid line. Refer to O-Ring Replacement.

    2. Object Number: 1570765 Size: SH
  2. Install the liquid line in to the vehicle.
  3. Connect the liquid line to the evaporator core.
  4. Install the A/C quick connect fitting. Refer to Air Conditioning Line/Tube Connector Removal/Replacement.
  5. Install the windshield wiper transmission. Refer to Windshield Wiper Transmission Replacement.

    6. Object Number: 1570363 Size: SH
  6. Connect the liquid line to the strut tower retaining clip.
  7. Connect the liquid line to the condenser tube.
  8. Install the A/C quick connect fitting. Refer to Air Conditioning Line/Tube Connector Removal/Replacement.
  9. Install the air cleaner from the vehicle. Refer to Air Cleaner Assembly Replacement.
  10. Evacuate and recharge the refrigerant system. Refer to Refrigerant Recovery and Recharging.
  11. Using J 39400-A leak test the fittings of the component.

Liquid Line Replacement LH2

Special Tools

J 39400-A Halogen Leak Detector

Removal Procedure
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
  2. Remove the air cleaner from the vehicle. Refer to Air Cleaner Assembly Replacement.
  3. Disconnect the quick connect fitting at the condenser tube. Refer to Air Conditioning Line/Tube Connector Removal/Replacement.

    4. Object Number: 1570363 Size: SH
  4. Disconnect the liquid line from the strut tower retaining clip.
  5. Remove the windshield wiper transmission. Refer to Windshield Wiper Transmission Replacement.

    6. Object Number: 1570343 Size: SH
  6. Disconnect the quick connect fitting at the evaporator core. Refer to Air Conditioning Line/Tube Connector Removal/Replacement.
  7. Disconnect the liquid line from the evaporator core.
  8. Remove the liquid line from the vehicle.
  9. Remove and discard the O-ring seals.

Installation Procedure

    Object Number: 1570343 Size: SH
  1. Install new O-rings to the liquid line. Refer to O-Ring Replacement.
  2. Install the liquid line in to the vehicle.
  3. Connect the liquid line to the evaporator core.
  4. Install the A/C quick connect fitting. Refer to Air Conditioning Line/Tube Connector Removal/Replacement.
  5. Install the windshield wiper transmission. Refer to Windshield Wiper Transmission Replacement.

    6. Object Number: 1570363 Size: SH
  6. Connect the liquid line to the strut tower retaining clip.
  7. Connect the liquid line to the condenser tube.
  8. Install the A/C quick connect fitting. Refer to Air Conditioning Line/Tube Connector Removal/Replacement.
  9. Install the air cleaner from the vehicle. Refer to Air Cleaner Assembly Replacement.
  10. Evacuate and recharge the refrigerant system. Refer to Refrigerant Recovery and Recharging.
  11. Using J 39400-A , leak test the fittings of the component.