GM Service Manual Online
For 1990-2009 cars only

Evaporator Outlet Hose Replacement First Design

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

The first design can be identified by the attachment method of the evaporator outlet hose and the liquid line to the Thermal Expansion Valve (TXV) . They are retained to the TXV independently using nuts.

  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .

  2. Object Number: 1332452  Size: SH
  3. Remove the evaporator outlet hose nut from the evaporator outlet hose.
  4. Remove the evaporator outlet hose from the compressor hose.

  5. Object Number: 1332453  Size: SH
  6. Remove the evaporator outlet hose nut from the thermal expansion valve (TXV).
  7. Remove the evaporator outlet hose from the TXV.
  8. Remove evaporator outlet hose from the vehicle.
  9. Remove and discard the sealing washers from the evaporator outlet hose and the compressor hose. Refer to Sealing Washer Replacement .
  10. Install protective caps to the TXV and the compressor hose to prevent contamination and desiccant saturation.

Installation Procedure


    Object Number: 1332453  Size: SH
  1. Remove the protective caps from the TXV and the compressor hose.
  2. Install new sealing washers to the evaporator outlet hose and the compressor hose. Refer to Sealing Washer Replacement .
  3. Install the evaporator outlet hose to the TXV.
  4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the evaporator outlet hose nut to the TXV.
  6. Tighten
    Tighten the nut to 16 N·m (12 lb ft).


    Object Number: 1332452  Size: SH
  7. Install the evaporator outlet hose to the compressor hose.
  8. Install the evaporator outlet hose nut to the evaporator outlet hose.
  9. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  10. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  11. Test the affected A/C joints for leaks using J 39400-A .

Evaporator Outlet Hose Replacement Second Design

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

The second design can be identified by the attachment method of the evaporator outlet hose and the liquid line to the Thermal Expansion Valve (TXV) . They are retained to the TXV as a pair using a single nut.


    Object Number: 1332452  Size: SH
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  2. Remove the evaporator outlet hose nut from the evaporator outlet hose.
  3. Remove the evaporator outlet hose from the compressor hose.

  4. Object Number: 1506428  Size: SH
  5. Remove the evaporator outlet hose and liquid line retainer plate nut from the TXV.

  6. Object Number: 1506429  Size: SH
  7. Remove the evaporator outlet hose and liquid line from the TXV.
  8. Remove evaporator outlet hose from the vehicle.
  9. Remove and discard the sealing washers from the evaporator outlet hose and the compressor hose. Refer to Sealing Washer Replacement .
  10. Install protective caps to the TXV and the compressor hose to prevent contamination and desiccant saturation.

Installation Procedure


    Object Number: 1506429  Size: SH
  1. Remove the protective caps from the TXV and the compressor hose.
  2. Install new sealing washers to the evaporator outlet hose, liquid line, and the compressor hose. Refer to Sealing Washer Replacement .
  3. Install the evaporator outlet hose and the liquid line to the TXV.

  4. Object Number: 1506428  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the evaporator outlet hose and the liquid line nut to the TXV.
  6. Tighten
    Tighten the nut to 20 N·m (15 lb ft).


    Object Number: 1332452  Size: SH
  7. Install the evaporator outlet hose to the compressor hose.
  8. Install the evaporator outlet hose nut to the evaporator outlet hose.
  9. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  10. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  11. Test the affected A/C joints for leaks using J 39400-A .