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. Remove the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.

  3. Object Number: 257983  Size: SH
  4. Remove the evaporator tube nut from the evaporator.
  5. Remove the evaporator tube nut from the evaporator.
  6. Remove the O-ring seal.
  7. Remove the grille. Refer to Grille Replacement in Exterior Trim.
  8. Remove the evaporator tube nut from the condenser.
  9. Remove the evaporator tube from the condenser.
  10. Remove the O-ring seal.
  11. Remove the tube from the clip.

Installation Procedure


    Object Number: 257983  Size: SH
  1. Install the evaporator tube into the clip.
  2. Coat the new O-ring seal with 525 viscosity refrigerant oil.
  3. Install the new O-ring seal.
  4. Install the evaporator tube to the condenser.
  5. 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.

  6. Install the evaporator tube nut to the condenser.
  7. Tighten
    Tighten the nut to 20 N·m (15 lb ft).

  8. Coat the new O-ring seal with 525 viscosity refrigerant oil.
  9. Install the new O-ring seal.
  10. Install the evaporator tube to the evaporator.
  11. Install the nut to the evaporator.
  12. Tighten
    Tighten the nut to 20 N·m (15 lb ft).

  13. Install the grille. Refer to Grille Replacement in Exterior Trim.
  14. Install the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.
  15. Evacuate and recharge the system. Refer to Refrigerant Recovery and Recharging .
  16. Leak test the fittings of the component using the J 39400-A .