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Removal Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Heater Hoses & Evaporator Inlet/Outlet Tube
    GM1547627Courtesy of GENERAL MOTORS CORP.
  1. Recover the refrigerant from the air conditioning (A/C) system. Refer to Refrigerant Recovery and Recharging .
  2. Drain the cooling system. Refer to Draining and Filling Cooling System (Static Fill) or Draining and Filling Cooling System (Vac-N-Fill) in Engine Cooling.
    3. IMPORTANT: The defroster door must be closed to allow clearance during defroster duct removal.
  3. Set the heating, ventilation and air conditioning (HVAC) controls in the vent setting to close the defroster door.
  4. Remove the blower motor. Refer to Blower Motor Replacement .
  5. Disconnect the electrical connector from the blower motor resistor.
  6. Disconnect the electrical connector from the evaporator temperature sensor.
  7. Disconnect all of the HVAC actuator electrical connectors.
  8. Remove the instrument panel (I/P) carrier. Refer to Instrument Panel (I/P) Carrier Replacement in Instrument Panel, Gages and Console.
  9. Remove the evaporator outlet tube nut.
  10. Disconnect the evaporator outlet tube and evaporator inlet tube from the thermal expansion valve (TXV).
  11. Remove and discard the sealing washers.
    12. Fig 2: Locating HVAC Module To Dash Panel Sound Barrier Nuts
    GM656207Courtesy of GENERAL MOTORS CORP.
  12. Remove the heater inlet and outlet hoses. Refer to Heater Hose/Pipe Replacement - Inlet/Outlet .
  13. Remove the HVAC module nuts.
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