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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Accumulator Replacement >> Installation Procedure

Installation Procedure

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  1. If replacing the accumulator add the specified amount of PAG oil directly into the accumulator. Refer to Refrigerant System Capacities .
  2. Install the accumulator (1).
    CAUTION: 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 screw (4) to the accumulator retaining bracket (2).

    Tighten 

    Tighten the screw to 9 N.m (80 lb in).

    Fig 1: Installing Accumulator Retaining Bracket Screw
    G01216950Courtesy of GENERAL MOTORS CORP.
  4. Connect the low pressure sensor electrical connector (1).
    Fig 2: Connecting Low Pressure Sensor Electrical Connector
    G01216951Courtesy of GENERAL MOTORS CORP.
  5. Install new sealing washers. Refer to Sealing Washer Replacement .
  6. Install the evaporator outlet hose.
  7. Install the evaporator outlet hose retaining nut (1) to the accumulator.

    Tighten 

    Tighten the nut to 16 N.m (12 lb ft).

  8. Install the compressor inlet hose.
  9. Install the compressor inlet hose retaining nut (2) to the accumulator.

    Tighten 

    Tighten the nut to 16 N.m (12 lb ft).

  10. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  11. Leak test the fittings of the component using the J-39400-A  .
    Fig 3: Installing Evaporator Outlet Hose & Compressor Inlet Hose
    G01216952Courtesy of GENERAL MOTORS CORP.
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