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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1546 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Evaporator Tube Replacement - Front >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install a new O-ring onto the A/C refrigerant pressure sensor. Refer to O-Ring Replacement .
    2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the A/C refrigerant pressure sensor to the evaporator tube.

    Tighten:  Tighten the sensor to 4.75 N.m (42 lb in).

  3. Remove the cap or tape from the evaporator tubes.
  4. Install new O-rings onto the front and rear evaporator tubes. Refer to O-Ring Replacement .
    5. Fig 1: A/C Refrigerant Pressure Sensor
    GM621754Courtesy of GENERAL MOTORS CORP.
  5. Install the front evaporator tube to the vehicle.
    6. Fig 2: Front Evaporator Tube & Bolt
    GM297295Courtesy of GENERAL MOTORS CORP.
  6. Connect the front evaporator tube to the rear evaporator tube.
  7. Install the bolt which secures the front evaporator tube to the rear evaporator tube.

    Tighten:  Tighten the bolt to 25 N.m (18 lb ft).

  8. Remove the cap or tape from the condenser.
    9. Fig 3: Condenser Front Evaporator Tube & Bolt
    GM297294Courtesy of GENERAL MOTORS CORP.
  9. Connect the front evaporator tube to the condenser.
  10. Install the bolt which secures the front evaporator tube to the condenser.

    Tighten:  Tighten the bolt to 27 N.m (20 lb ft).

    11. Fig 4: Refrigerant Pressure Sensor & Electrical Connector
    GM380181Courtesy of GENERAL MOTORS CORP.
  11. Connect the electrical connector to the refrigerant pressure sensor.
  12. Install the upper radiator support. Refer to Radiator Support Replacement in Engine Cooling.
  13. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .
  14. Install the battery heat shield. Refer to Battery Heat Shield Replacement in Engine Electrical.
  15. Leak test the fittings of the component using J 39400-A  . See Special Tools and Equipment .
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