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Home >> Pontiac >> 2004 >> Aztek Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 152 (HVAC Systems - General Servicing) >> Repair Instructions >> HVAC Module Assembly Replacement >> Removal Procedure
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Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the engine coolant. Refer to Draining and Filling Cooling System (LL8) or Draining and Filling Cooling System (LM4) in Engine Cooling.
  2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging .
  3. Remove the instrument panel (I/P) carrier. Refer to Instrument Panel (I/P) Carrier Replacement in Instrument Panel, Gages and Console.
  4. Reposition the heater hose clamps using J 43181  . See Special Tools and Equipment .
  5. Disconnect the heater hoses from the heater core.
    6. Fig 1: Locating Evaporator Tube Components
    GM735916Courtesy of GENERAL MOTORS CORP.
  6. Remove the retaining nut (3) from the accumulator (6) at the evaporator (1).
  7. Disconnect the accumulator (6) from the evaporator (1).
  8. Disconnect the evaporator tube (4) from the evaporator (1).
  9. Disconnect all of the electrical connectors to the HVAC module assembly.
  10. Remove the HVAC module assembly.
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