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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 >> Evaporator Tube Replacement - Outlet (C69) >> 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. Connect the evaporator tube (1) to the auxiliary evaporator core.

    Tighten 

    Tighten the hose fitting to 48 N.m (35 lb ft).

  2. Install the evaporator tube retaining nuts (2) to the engine and the body.

    Tighten 

    Tighten the retaining nuts to 6 N.m (53 lb in).

    Fig 1: Connecting Evaporator Tube & Installing Retaining Nuts
    G01216925Courtesy of GENERAL MOTORS CORP.
  3. Install the bolt retaining the hose (1) to the transmission bracket.

    Tighten 

    Tighten the retaining bolt to 5 N.m (44 lb in).

  4. Lower the vehicle.
  5. Install the auxiliary evaporator outlet tube to the compressor hose.

    Tighten 

    Tighten the fitting to 48 N.m (35 lb ft).

  6. Install the engine cover.
  7. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  8. Leak test the fittings of the components using the J-39400-A  .
    Fig 2: Installing Hose Retaining Bolt
    G01216926Courtesy of GENERAL MOTORS CORP.