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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1602 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Heater/Vent Module Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the heater/vent module assembly to the vehicle.
    NOTE: Refer to FASTENER NOTICE .
  2. Install the heater/vent module mounting nuts.

    Tighten 

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

  3. Install the heater/vent module mounting screws.

    Tighten 

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

    Fig 1: Install Heater/Vent Module Assembly To Vehicle
    G01479202Courtesy of GENERAL MOTORS CORP.
  4. Connect the electrical harnesses and the ground connections.
  5. Install the heater/vent module drain hose.
  6. Install the I/P carrier. Refer to INSTRUMENT PANEL (I/P) CARRIER REPLACEMENT .
  7. Install the outlet heater hose to the heater core.
  8. Reposition the outlet heater hose clamp to the heater core.
  9. Install the inlet heater hose to the heater core.
  10. Reposition the inlet heater hose clamp to the heater core.
  11. Fill the engine coolant. Refer to DRAINING AND FILLING COOLING SYSTEM .
    Fig 2: Connect Electrical Harnesses & Ground Connections
    G01479203Courtesy of GENERAL MOTORS CORP.
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