GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

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

  2. Object Number: 419283  Size: SH
  3. Remove the evaporator hose from the accumulator cover.

  4. Object Number: 422255  Size: SH
  5. Loosen the evaporator hose fitting at the expansion tube location.
  6. Separate the evaporator hose at the expansion tube location.

  7. Object Number: 1215230  Size: SH
  8. Remove the expansion tube from the evaporator hose.
  9. Remove and discard the O-ring from the evaporator hose.

Installation Procedure

  1. Install the new O-ring to the evaporator hose. Refer to O-Ring Replacement .
  2. Important: Ensure that the short screen and arrow face the evaporator.


    Object Number: 1215230  Size: SH
  3. Install the new expansion tube to the evaporator hose.

  4. Object Number: 422255  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. Connect the evaporator hose.
  6. Tighten
    Tighten the nut to 27 N·m (20 lb ft).


    Object Number: 419283  Size: SH
  7. Position the evaporator hose to the accumulator cover and press to engage.
  8. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  9. Leak test the fittings of the component using the J 39400-A .