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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating, Ventilation And Air Conditioning >> Repair Instructions >> Heater Case Replacement (C60) >> Installation Procedure

Installation Procedure

  1. Install the heater case (5) to the vehicle.
  2. Connect the vacuum lines.
  3. Connect the electrical connectors.
  4. Roll the instrument panel upward. Refer to INSTRUMENT PANEL (I/P) CARRIER REPLACEMENT in Instrument Panel, Gages, and Console.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
    Fig 1: Installing Heater Case
    G01645721Courtesy of GENERAL MOTORS CORP.
  5. Install the heater case retaining nuts (2) to the engine compartment.

    Tighten 

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

  6. Install the evaporator casing to the vehicle. Refer to EVAPORATOR CORE REPLACEMENT .
  7. Connect the heater hoses to the heater core.
    Fig 2: Installing Heater Hoses
    G01645722Courtesy of GENERAL MOTORS CORP.
  8. Using the J 38185  reposition the heater hose clamps to the heater core.
  9. Evacuate and recharge the A/C system. Refer to REFRIGERANT RECOVERY AND RECHARGING .
  10. Fill the engine coolant. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
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