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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1280 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> HVAC Module Assembly Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the HVAC module assembly (1) to the vehicle.
    Fig 1: Installing HVAC Module Assembly
    G01545446Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE .
  2. Install the four nuts (2).

    Tighten 

    Tighten the nuts (2) to 10 N.m (89 lb in).

  3. Connect the rear heater ducts (3) to the HVAC module assembly (1).
  4. Connect the blower motor electrical connector.
  5. Install the instrument panel reinforcement. Refer to INSTRUMENT PANEL (I/P) CARRIER SUPPORT REPLACEMENT in Instrument Panel, Gages, and Console.
  6. Install the instrument panel assembly. Refer to INSTRUMENT PANEL (I/P) TRIM PANEL REPLACEMENT - LOWER and TRIM PAD REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages, and Console.
  7. Install new O-rings lubricated with mineral base 525 viscosity refrigerant oil.
  8. Install the evaporator inlet (4) and outlet (3) tubes to the evaporator.
    Fig 2: Locating Hose Assembly Components
    G01545447Courtesy of GENERAL MOTORS CORP.
  9. Install the heater hoses (2,3) to the heater core.
    Fig 3: Installing Heater Hoses To Heater Core
    G01545448Courtesy of GENERAL MOTORS CORP.
  10. Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM .
  11. Evacuate and Recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
  12. Connect the negative battery cable.

    Tighten 

    Tighten the negative battery cable to 15 N.m (11 lb ft).

  13. Operate the A/C system and test for refrigerant leaks. Refer to LEAK TESTING   .
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