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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Compressor Replacement (4.8L, 5.3L, 6.0L) >> Installation Procedure

Installation Procedure

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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.
  1. Install the compressor with the mounting bolts in the compressor.

    Tighten 

    Tighten the bolts to 50 N.m (37 lb ft).

  2. Install the fan shroud. Refer to Fan Shroud Replacement in Engine Cooling .
  3. Install the new sealing washers. Refer to Sealing Washer Replacement .
  4. Install the suction hose to the compressor.
  5. Install the suction line bolt to the compressor.

    Tighten 

    Tighten the bolt to 35 N.m (26 lb ft).

  6. Install the discharge hose to the compressor.
  7. Install the discharge line bolt to the compressor.

    Tighten 

    Tighten the bolt to 35 N.m (26 lb ft).

  8. Connect the compressor clutch electrical connector.
  9. Connect the high pressure switch connector.
  10. Install a ratchet into the air conditioning (A/C) belt tensioner adapter opening.
  11. Rotate the belt tensioner clockwise in order to install the belt.
  12. Install the A/C belt on to the pulley.
  13. Install the splash shield.
  14. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  15. Leak test the fittings of the component using the J-39400-A  .
    Fig 1: Installing A/C Belt Onto Pulley
    G01216896Courtesy of GENERAL MOTORS CORP.
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