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: 527470  Size: SH
  3. Disconnect the orifice valve wiring harness and position out of the way.

  4. Object Number: 614452  Size: SH
  5. Remove the accumulator cover (1).

  6. Object Number: 608777  Size: SH
  7. Remove the A/C compressor suction hose (1) from the accumulator.

  8. Object Number: 422256  Size: SH
  9. Remove the evaporator hose from the accumulator.
  10. Remove the accumulator from the housing.

Installation Procedure

  1. Add the proper amount of refrigerant oil to the accumulator. Refer to Refrigerant System Capacities .
  2. Install the accumulator into the housing.

  3. Object Number: 422256  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.

  4. Install the evaporator hose and nut to the accumulator.
  5. Tighten
    Tighten the nut to 20 N·m (15 lb ft).


    Object Number: 608777  Size: SH
  6. Install the A/C compressor suction hose (1) and nut to the accumulator.
  7. Tighten
    Tighten the nut to 20 N·m (15 lb ft).


    Object Number: 614452  Size: SH
  8. Install the accumulator cover (1).

  9. Object Number: 527470  Size: SH
  10. Install the evaporator hose into the retainer.
  11. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  12. Leak test the fittings of the component using the J 39400-A .