GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Corvette 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Air Conditioning Accumulator Replacement

Removal Procedure
  1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging

    2. Object Number: 74060 Size: SH
  2. Remove the battery. Refer to Battery Replacement

    3. Object Number: 284760 Size: SH
  3. Remove the battery heat shield. Refer to Battery Heat Shield Replacement

    4. Object Number: 621749 Size: SH
  4. Remove the nut retaining the heater pipe bracket to the dash panel.
  5. Reposition the heater pipe bracket to access the refrigerant lines.

    6. Object Number: 95632 Size: SH
  6. Remove the compressor hose to accumulator retaining bolt.

    7. Important: Cap or tape the open compressor hose and the accumulator immediately to prevent contamination.

  7. Disconnect the compressor hose from the accumulator, discard the O-ring.
  8. Reposition the compressor hose end.

    9. Object Number: 297298 Size: SH
  9. Remove the accumulator bracket mounting nuts.
  10. Reposition the accumulator slightly to access the accumulator hose to accumulator fitting.

    11. Important: Prior to removal, take note of the accumulator alignment to the accumulator hose and the rear evaporator tube.


    Object Number: 297225 Size: SH
  11. Using a back-up wrench on the accumulator fitting (2), loosen the accumulator hose fitting (1) from the accumulator.

    12. Important: Cap or tape the open accumulator hose and the accumulator immediately to prevent contamination.


    Object Number: 297300 Size: SH
  12. Disconnect the accumulator hose from the accumulator, discard the O-ring.

    13. Object Number: 296228 Size: SH
  13. Remove the accumulator from the vehicle.
  14. Loosen the accumulator bracket bolt.
  15. Remove the accumulator from the accumulator bracket.
  16. Inspect the accumulator bracket insulator and the accumulator lower insulator for wear or damage.

    17. Object Number: 628098 Size: SH
  17. If replacing the accumulator, drain and measure as much of the oil as possible from the removed accumulator.

    18. This measurement will be used during installation of the replacement accumulator.

Installation Procedure

    Object Number: 628098 Size: SH
  1. Replacement accumulator will come without refrigerant oil.
  2. Add 60 ml (2 oz) more than amount drained from old accumulator.

    3. Object Number: 296233 Size: SH
  3. Replace the accumulator bracket insulator, if necessary.
  4. Replace the accumulator lower insulator, if necessary:
    5. 4.1. Remove the paper backing from the lower insulator (1).
    4.2. Position and install the insulator (1) to the bottom of the accumulator (2) as shown.
  5. Install the accumulator to the accumulator bracket.
  6. Tighten the accumulator bracket bolt just enough to provide some resistance in rotating the accumulator.

    7. Object Number: 297232 Size: SH
  7. Install the accumulator and bracket into position in the vehicle.
  8. Remove the cap or tape from the accumulator hose and the accumulator.
  9. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the accumulator hose and the accumulator.
  10. Lightly coat the new O-ring seal (1) with mineral base 525 viscosity refrigerant oil.

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

  11. Carefully slide the new O-ring seal (1) onto the accumulator hose until seated.

    12. Object Number: 297300 Size: SH
  12. Install the accumulator hose to the accumulator.
  13. Align the accumulator to the accumulator hose and the rear evaporator tube as noted prior to removal.

    14. Object Number: 297225 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.

  14. Using a back-up wrench on the accumulator fitting (2), secure the accumulator hose fitting (1) to the accumulator.

    15. Tighten
    Tighten the accumulator hose fitting to the accumulator to 41 N·m (30 lb ft).


    Object Number: 297298 Size: SH
  15. Install the accumulator and bracket into position.
  16. Install the accumulator bracket mounting nuts.

    17. Tighten
    Tighten the accumulator bracket mounting nuts to 10 N·m (89 lb in).

  17. Tighten the accumulator bracket bolt.

    18. Tighten
    Tighten the accumulator bracket bolt to 10 N·m (89 lb in).


    Object Number: 297228 Size: SH
  18. Remove the cap or tape from the compressor hose and the accumulator.
  19. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the compressor hose and the accumulator.
  20. Lightly coat the O-ring seal (1) with mineral base 525 viscosity refrigerant oil.

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

  21. Carefully slide the new O-ring (1) onto the compressor hose until seated.

    22. Leave a light coating of the refrigerant oil to remain on the compressor hose in the area indicated (2) ONLY.


    Object Number: 95632 Size: SH
  22. Install the compressor hose to the accumulator.
  23. Install the compressor hose to accumulator retaining bolt.

    24. Tighten
    Tighten the compressor hose to accumulator retaining bolt to 20 N·m (15 lb ft).


    Object Number: 621749 Size: SH
  24. Install the heater pipe bracket to the dash panel stud.
  25. Install the heater pipe bracket retaining nut.

    26. Tighten
    Tighten the heater pipe bracket retaining nut to 10 N·m (89 lb in).


    Object Number: 284760 Size: SH
  26. Install the battery heat shield. Refer to Battery Heat Shield Replacement
  27. Install the battery. Refer to Battery Replacement
  28. Program the transmitters. Refer to Transmitter Programming/Synchronization
  29. Evacuate and charge the refrigerant system. Refer to Refrigerant Recovery and Recharging
  30. Check the accumulator joints for leaks. Refer to Leak Testing