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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1380 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> HVAC Module Assembly Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
    CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  1. Disconnect the negative battery cable.
  2. Discharge and recover the Refrigerant. Refer to Refrigerant Recovery and Recharging.
  3. Drain the engine cooling system. Refer to Draining and Filling Cooling System in Engine Cooling.
    4. Fig 1: Heater Core And Hoses
    GM244231Courtesy of GENERAL MOTORS CORP.
  4. Remove the heater hoses (2,3) at the heater core.
    5. Fig 2: Inlet Tube, Compressor, Suction Line, Bolts And Nuts
    GM833674Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Cap the open fittings in order to prevent dirt and moisture from entering the refrigeration system.
  5. Remove the evaporator inlet (4) and outlet (3) tubes from the evaporator.
  6. Remove the instrument panel assembly. Refer to Trim Pad Replacement - Instrument Panel (I/P) Upper and Instrument Panel (I/P) Trim Panel Replacement - Lower in Instrument Panel, Gages, and Console.
  7. Remove the instrument panel reinforcement. Refer to Instrument Panel (I/P) Carrier Support Replacement in Instrument Panel, Gages, and Console.
  8. Disconnect the blower motor electrical connector.
    9. Fig 3: HVAC Module Assembly, Rear Heater Ducts And Nuts
    GM834531Courtesy of GENERAL MOTORS CORP.
  9. Separate the rear heater ducts (3) from the HVAC module assembly (1).
  10. Remove the four nuts (2).
  11. Pull the HVAC module assembly forward and remove from the vehicle.
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