GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Trans Sport Ext. 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Air Conditioning Accumulator Replacement

Removal Procedure
  1. Remove the air cleaner cover and duct assembly. Refer to Air Cleaner Element Replacement in Engine Controls.
  2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .

    3. Important: Cap or tape the open suction lines and accumulator to prevent contamination of the refrigerant system.


    Object Number: 392582 Size: SH
  3. Disconnect the evaporator suction line from the accumulator. Discard the O-ring seal and cap or tape the open line and accumulator.

    4. Object Number: 392571 Size: SH
  4. Disconnect the compressor suction line from the accumulator. Discard the O-ring seal and cap or tape the open line and the accumulator.

    5. Object Number: 299966 Size: SH
  5. Remove the retaining strap mounting bolt (1).
  6. Remove the accumulator and mounting strap from the vehicle.

    7. Object Number: 392574 Size: SH
  7. Remove the retaining strap pinch bolt and remove retaining strap from the accumulator.

Installation Procedure

    Object Number: 392574 Size: SH
  1. Install the accumulator into the retaining strap.

    2. 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.

  2. Install the retaining strap pinch bolt.

    3. Tighten
    Tighten the bolt to 5.5 N·m (49 lb in).

  3. Install the accumulator and retaining strap assembly into the vehicle.

    4. Object Number: 299966 Size: SH
  4. Install the retaining strap mounting bolt (1).

    5. Tighten
    Tighten the bolt to 5.5 N·m (49 lb in).

  5. Remove the cap or tape from the suction lines.
  6. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of suction lines and accumulator.
  7. Lightly coat the new O-ring seals with the mineral base 525 viscosity refrigerant oil.

    8. Important: DO NOT allow any of the mineral base 525 viscosity refrigerant oil on the new O-ring seals to enter the refrigerant system.


    Object Number: 297232 Size: SH
  8. Carefully slide the new O-ring seal (1) onto the evaporator suction line until seated

    9. Object Number: 297228 Size: SH
  9. Carefully slide the new O-ring seal (1) onto the compressor suction line until seated.

    10. Allow a light coating of the refrigerant oil to remain on the suction line fitting in the area indicated (2) ONLY.


    Object Number: 392582 Size: SH
  10. Connect the suction lines to the accumulator.

    11. Tighten

        • Tighten the evaporator suction line fitting to 47 N·m (35 lb ft).
        • Tighten the compressor suction line bolt to 16 N·m (12 lb ft).
  11. Evacuate, charge and leak test the system. Refer to Refrigerant Recovery and Recharging .
  12. Install the air cleaner cover and duct assembly. Refer to Air Cleaner Element Replacement in Engine Controls.