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

Removal Procedure
  1. Remove the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.4L or Air Cleaner Assembly Replacement in Engine Controls - 3.8L.
  2. Remove the cross vehicle brace. Refer to Cross Vehicle Brace Replacement in Body Front End.
  3. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .

    4. Object Number: 540892 Size: SH
  4. Remove the suction hose nut at the accumulator and position the suction hose aside .

    5. Object Number: 540914 Size: SH
  5. Remove the compressor hose nut from the accumulator and position the compressor hose aside.

    6. Object Number: 379838 Size: SH
  6. Remove the accumulator bracket bolt.

    7. Object Number: 379841 Size: SH
  7. Remove the accumulator.

Installation Procedure

    Object Number: 379841 Size: SH
  1. Install the accumulator.

    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.


    Object Number: 379838 Size: SH
  2. Install the accumulator bracket bolt.

    3. Tighten
    Tighten the accumulator bracket bolt to 4 N·m (36 lb in).

    Important: Lubricate the new O-ring seals and seal washers with a mineral base 525 viscosity refrigerant oil.

  3. Install the new O-ring seals onto the compressor hose and the suction hose. Refer to O-Ring Replacement .

    4. Object Number: 540914 Size: SH
  4. Install the compressor hose to the accumulator.

    5. Tighten
    Tighten the compressor hose nut to 16 N·m (12 lb ft).


    Object Number: 540892 Size: SH
  5. Install the suction hose onto the accumulator

    6. Tighten
    Tighten the suction hose nut to 47 N·m (35 lb ft).

  6. Evacuate and charge the system. Refer to Refrigerant Recovery and Recharging .
  7. Inspect the system for leaks. Refer to Leak Testing .
  8. Install the cross vehicle brace. Refer to Cross Vehicle Brace Replacement in Body Front End.
  9. Install the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.4L or Air Cleaner Assembly Replacement in Engine Controls - 3.8L.