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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 >> Mode Door Replacement - Upper (Visteon) >> 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 mode door (4) to the door assembly (3).
  2. Install the door assembly (3) to the left air distribution housing (1).
  3. Install the lever to the defrost door (2).
  4. Install the lever to the upper mode door (4).
    5. Fig 1: Air Distribution Hosing, Defrost Door, Door Assembly & Mode Door
    G01479159Courtesy of GENERAL MOTORS CORP.
  5. Install the air distribution housing halves.
    NOTE: Refer to FASTENER NOTICE .
  6. Install the screws to the air distribution housing (1).

    Tighten 

    Tighten the screws to 2 N.m (18 lb in).

    7. Fig 2: Air Distribution Housing
    G01479160Courtesy of GENERAL MOTORS CORP.
  7. Install the air distribution housing (1) to the HVAC module assembly (2).
  8. Install the screws to the air distribution housing (1).

    Tighten 

    Tighten the screws to 2 N.m (18 lb in).

  9. Install the wiring harness to the air distribution housing (1).
    10. Fig 3: Install Air Distribution Housing To HVAC Module Assembly
    G01479161Courtesy of GENERAL MOTORS CORP.
  10. Connect the electrical connector (3) to the mode actuator (4).
  11. Install the mode actuator (4) to the HVAC module assembly (1).
  12. Install the screws to the mode actuator (4).

    Tighten 

    Tighten the screws to 2 N.m (18 lb in).

  13. Install the HVAC module assembly. Refer to HVAC Module Assembly Replacement .
Fig 4: Electrical Connector, Mode Actuator & HVAC Module Assembly
G01479162Courtesy of GENERAL MOTORS CORP.
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