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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 840 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> HVAC Module Assembly Replacement >> Installation Procedure

Installation Procedure

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  1. If replacing the HVAC module, transfer the components from the old HVAC module as necessary.
  2. Install the HVAC module (2) to the vehicle (1).
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install the nuts (4) to the HVAC module (2).

    Tighten 

    Tighten the nuts to 9 N.m (80 lb in).

  4. Install the bolts(4) to the HVAC module (2).

    Tighten 

    Tighten the bolts to 4 N.m (35 lb in).

  5. Connect the electrical harnesses and the ground connections.
  6. Install the HVAC module drain hose.
    Fig 1: Connecting Electrical Harnesses & Ground Connections From HVAC Module
    G01454265Courtesy of GENERAL MOTORS CORP.
  7. Install the instrument panel carrier. Refer to INSTRUMENT PANEL (I/P) CARRIER REPLACEMENT in Instrument Panel, Gages and Console.
  8. Install the accumulator. Refer to ACCUMULATOR REPLACEMENT  .
  9. Install the surge tank outlet hose to the heater core.

    Firmly push the quick connect onto the heater core pipe until you hear an audible click.

  10. Install the inlet heater hose to the heater core.

    Firmly push the quick connect onto the heater core pipe until you hear an audible click.

  11. Fill the engine coolant. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
    Fig 2: Installing Inlet Heater Hose To Heater Core
    G01454266Courtesy of GENERAL MOTORS CORP.
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