GM Service Manual Online
For 1990-2009 cars only

Liquid Line Replacement LHD, LA3, LY9

Tools Required

    • J 39400-A Halogen Leak Detector
    • J 45689 A/C Quick Joint Tool

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 in Engine Controls 2.6L and 3.2L.

  3. Object Number: 789018  Size: SH
  4. Disconnect the A/C high pressure switch electrical connector (1) from the switch (2).

  5. Object Number: 789019  Size: SH
  6. Remove the retaining clip screw  (1) from the A/C line.
  7. Important: The body of the tool (1) should be parallel to the A/C line.


    Object Number: 817526  Size: SH
  8. Using the J 45689 disconnect the quick joint (2) by pressing the probe end into the two small openings on the quick joint.

  9. Object Number: 788980  Size: SH
  10. Remove the liquid line from the strut tower retaining clip (1).
  11. Using the J 45689 disconnect the liquid line at the evaporator fitting .
  12. Remove the liquid line from the vehicle.

Installation Procedure


    Object Number: 817518  Size: SH
  1. Coat new O-rings with refrigerant oil. Refer to O-Ring Replacement .
  2. Install the liquid line in to the vehicle.

  3. Object Number: 788980  Size: SH
  4. Secure the liquid line into the bracket (1) on the strut tower.

  5. Object Number: 817540  Size: SH
  6. Connect the liquid line to the evaporator.
  7. Install the A/C quick connect clamp (1) on the line.
  8. Important: Squeeze the clamp together until you here it engage.

  9. Engage the clamp.
  10. Gently tug on the liquid line to ensure that the clamp is engaged.

  11. Object Number: 789019  Size: SH
  12. Connect the liquid line at the condenser.
  13. Notice: Refer to Fastener Notice in the Preface section.

  14. Install the retaining clip screw  (1) to the A/C line.
  15. Tighten
    Tighten the screw to 9.8 N·m (87 lb in).

  16. Install the A/C quick connect clamp on the line.
  17. Gently tug on the liquid line to ensure that the clamp (2) is engaged.

  18. Object Number: 789018  Size: SH
  19. Connect the high pressure switch electrical connector (1) to the switch (2).
  20. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls 2.6L and 3.2L.
  21. Evacuate and recharge the refrigerant system. Refer to Refrigerant Recovery and Recharging .
  22. Leak test the fittings of the repaired or reinstalled component using the J 39400-A .

Liquid Line Replacement RHD, LA3, LY9

Tools Required

    • J 39400-A Halogen Leak Detector
    • J 45689 A/C Quick Joint Tool

Removal Procedure

  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the battery. Refer to Battery Replacement in Engine Electrical.
  3. Remove the air cleaner from the vehicle. Refer to Air Cleaner Assembly Replacement in Engine Controls 2.6L and 3.2L.

  4. Object Number: 789018  Size: SH
  5. Disconnect the A/C high pressure switch electrical connector (1) from the switch (2).

  6. Object Number: 789019  Size: SH
  7. Using the J 45689 disengage the clamp (2) at the fan assembly.
  8. Remove the retaining clip screw (1) from the A/C line.

  9. Object Number: 817526  Size: SH

    Important: The body of the tool (1) should be parallel to the A/C line.

  10. Using J 45689 , disconnect the quick joint (2) by pressing the probe end into the two small openings on the quick joint.

  11. Object Number: 788980  Size: SH
  12. Remove the liquid line from the strut tower retaining clip (1).
  13. Using J 45689 disconnect the liquid line at the evaporator fitting.
  14. Remove the liquid line from the vehicle.

Installation Procedure


    Object Number: 817518  Size: SH
  1. Coat new O-rings with refrigerant oil. Refer to O-Ring Replacement .
  2. Install the liquid line in to the vehicle.

  3. Object Number: 788980  Size: SH
  4. Secure the liquid line into the bracket (1) on the strut tower.

  5. Object Number: 817540  Size: SH
  6. Connect the liquid line to the evaporator.
  7. Install the A/C quick connect clamp (1) on the line.
  8. Important: Squeeze the clamp together until you here it engage.

  9. Engage the clamp.
  10. Gently tug on the liquid line to ensure that the clamp is engaged.

  11. Object Number: 789019  Size: SH
  12. Connect the liquid line at the condenser.
  13. Notice: Refer to Fastener Notice in the Preface section.

  14. Install the retaining clip screw  (1) to the A/C line.
  15. Tighten
    Tighten the screw to 9.8 N·m (87 lb in).

  16. Install the A/C quick connect clamp on the line.
  17. Gently tug on the liquid line to ensure that the clamp (2) is engaged.

  18. Object Number: 789018  Size: SH
  19. Connect the high pressure switch electrical connector (1) to the switch (2).
  20. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls 2.6L and 3.2L.
  21. Install the battery. Refer to Battery Replacement in Engine Electrical.
  22. Evacuate and recharge the refrigerant system. Refer to Refrigerant Recovery and Recharging .
  23. Leak test the fittings of the repaired or reinstalled component using the J 39400-A .