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: 798935  Size: SH
  3. Remove the suction hose mounting bolt (2) from the A/C compressor (4).
  4. Remove the suction hose (1) from the A/C compressor (4).

  5. Object Number: 798937  Size: SH
  6. Remove the suction hose nut (1) from the accumulator (3).
  7. Remove the suction hose (2) from the accumulator (3).
  8. Remove the suction hose (2) from the vehicle.
  9. Discard all of the used sealing washers.
  10. Cap all of the A/C system openings.

Installation Procedure

  1. Install the suction hose assembly to the vehicle.
  2. Install the new sealing washers. Refer to Sealing Washer Replacement .

  3. Object Number: 798937  Size: SH
  4. Install the suction hose (2) to the accumulator (3).
  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 suction hose nut (1) to the accumulator (3).
  7. Tighten
    Tighten the nut to 16 N·m (12 lb ft).


    Object Number: 798935  Size: SH
  8. Install the suction hose (1) to the compressor (4).
  9. Install the suction hose mounting bolt (2) to the A/C Compressor (4).
  10. Tighten
    Tighten the bolt to 16 N·m (12 lb ft).

  11. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  12. Leak test the fittings of the component using the J 39400-A .