GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 39400-A Halogen Leak Detector

Removal Procedure

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging .
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  4. Remove the radiator air deflector. Refer to Radiator Air Baffle Assemblies and Deflectors in Engine Cooling.
  5. Remove the evaporator outlet tube to suction line bolt.

  6. Object Number: 672951  Size: SH
  7. Disconnect the evaporator outlet tube from the suction line (2).

  8. Object Number: 628879  Size: SH
  9. Remove the suction line to compressor nut.
  10. Disconnect the suction line from the compressor.
  11. Remove the suction line.
  12. Discard the sealing washer.

Installation Procedure

  1. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the A/C refrigerant hose and the A/C refrigerant component.
  2. Important: Flat washer type seals do not require lubrication.

  3. Carefully slide the new sealing washer onto the suction line until seated.
  4. Install the suction line.

  5. Object Number: 628879  Size: SH
  6. Connect the suction line to the compressor.
  7. 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.

  8. Install the suction line fitting nut.
  9. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  10. Install a new sealing washer on the suction line to evaporator outlet tube fitting.

  11. Object Number: 672951  Size: SH
  12. Connect the suction line (2) to the evaporator outlet tube fitting.
  13. Install the suction line to evaporator outlet tube fitting bolt.
  14. Tighten
    Tighten the bolt to 16 N·m (12 lb ft).

  15. Install the radiator air deflector. Refer to Radiator Air Baffle Assemblies and Deflectors in Engine Cooling.
  16. Lower the vehicle.
  17. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  18. Leak test the fittings of the component using J 39400-A .
  19. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.