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: 614450  Size: SH
  3. Disconnect the electrical connector from the orifice solenoid.
  4. Disconnect the orifice solenoid from the accumulator cover.
  5. Disconnect the hose fittings (1, 2) at each end of the valve.
  6. Remove the valve.

Installation Procedure

    Important: Lubricate the new expansion tube O-ring with mineral base 525 viscosity refrigerant oil before installing into the evaporator hose.

  1. Inspect the orifice valve screen and clean or replace as necessary.

  2. Object Number: 614450  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.

  3. Install the orifice valve to the lines (1, 2) and hand tighten to ensure a good connection.
  4. Tighten
    Tighten the fittings to 27 N·m (20 lb ft).


    Object Number: 527470  Size: SH
  5. Install the orifice valve into the accumulator cover and connect the electrical connector.
  6. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  7. Leak test the fittings of the component using theJ 39400-A .