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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1482 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> HVAC Module Replacement - Auxiliary >> Installation Procedure

Installation Procedure

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  1. Install new HVAC module pass through seal.

    Refer to HVAC MODULE PASS THRU SEAL REPLACEMENT - AUXILIARY .

  2. Install the HVAC module (1).
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  3. Install the HVAC module mounting bolts (5).

    Tighten 

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

    Fig 1: Installing HVAC Module And HVAC Module Mounting Bolts
    G01596678Courtesy of GENERAL MOTORS CORP.
  4. Install the air outlet ducts (5).
  5. Connect the electrical connectors.
  6. Install the right side rear quarter trim panel. Refer to INTERIOR TRIM in Interior Trim.
  7. Raise and support the vehicle.
    Fig 2: Installing Air Outlet Ducts
    G01596679Courtesy of GENERAL MOTORS CORP.
  8. Connect the heater hoses to the heater core.
  9. Install the nuts to the HVAC module studs.

    Tighten 

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

  10. Remove the cap or tape from the A/C lines.
  11. Install the new O-ring seals. Refer to O-RING REPLACEMENT .
    Fig 3: Connecting Heater Hoses To Heater Core
    G01596680Courtesy of GENERAL MOTORS CORP.
  12. Install the nuts (3) to the evaporator core studs.

    Tighten 

    Tighten the nuts to 20 N.m (15 lb ft).

  13. Lower the vehicle.
  14. Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 6) or DRAINING AND FILLING COOLING SYSTEM (BODY VIN CODE 3) in Engine Cooling.
  15. Evacuate and charge the system. Refer to REFRIGERANT RECOVERY AND RECHARGING .
  16. Leak test the fitting of the component using the J 39400-A.
    Fig 4: Installing Nuts To Evaporator Core Studs
    G01596681Courtesy of GENERAL MOTORS CORP.
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