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 right sheet metal diagonal brace. Refer to Front End Sheet Metal Diagonal Brace Replacement in Body Front End.
  3. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls.

  4. Object Number: 379828  Size: SH
  5. Remove the A/C compressor hose nut.
  6. Disconnect the A/C compressor hose from the condenser.

  7. Object Number: 409178  Size: SH
  8. Remove the A/C compressor hose nut.
  9. Remove the A/C compressor hose from the accumulator.
  10. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  11. Remove the lower air deflector. Refer to Radiator Air Baffle Assemblies and Deflectors in Engine Cooling.

  12. Object Number: 409138  Size: SH
  13. Remove the A/C compressor hose nut.
  14. Remove A/C compressor hose assembly at the A/C compressor.
  15. Important: Remove and discard all the used O-ring and sealing washers.

  16. Remove the A/C compressor hose assembly.

Installation Procedure

  1. Install the A/C compressor hose assembly.
  2. Important: The new O-ring seals must be lubricated with mineral base 525 viscosity refrigerant oil.

  3. Install the new O-ring seal to the A/C compressor hose assembly. Refer to O-Ring Replacement .
  4. Install the new sealing washers onto the A/C compressor hose assembly.


    Object Number: 409138  Size: SH
  5. Install the A/C compressor hose assembly to the rear of the A/C compressor.
  6. 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.

  7. Install the A/C compressor hose assembly nut.
  8. Tighten
    Tighten the A/C compressor hose nut to 33 N·m (24 lb ft).


    Object Number: 409178  Size: SH
  9. Install the lower air deflector. Refer to Radiator Air Baffle Assemblies and Deflectors in Engine Cooling.
  10. Lower the vehicle.
  11. Install the A/C compressor hose nut (1) to the accumulator.
  12. Tighten
    Tighten the A/C compressor hose nut to 16 N·m (12 lb ft).


    Object Number: 379828  Size: SH
  13. Install the A/C compressor hose.
  14. Tighten
    Tighten the A/C compressor hose nut to 16 N·m (12 lb ft).

  15. Install the right sheet metal diagonal brace. Refer to Front End Sheet Metal Diagonal Brace Replacement in Body Front End.
  16. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls.
  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 .