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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1008 (Heating, Ventilation And Air Conditioning - Gas) >> Repair Instructions >> Mode Door Replacement - Upper (Visteon) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 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).
    Fig 1: Upper Mode Door & Defroster Door (Visteon)
    GM826697Courtesy of GENERAL MOTORS CORP.
  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 2: Air Distribution Housing (Visteon)
    GM826686Courtesy of GENERAL MOTORS CORP.
  5. Install the air distribution housing halves.
    6. NOTE: Refer to Fastener Notice in Cautions and Notices.
  6. Install the screws to the air distribution housing (1).

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

    7. Fig 3: Removing/Installing Air Distribution Housing (Visteon)
    GM826798Courtesy 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 4: View Of Mode Actuator
    GM826791Courtesy 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 .
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