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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Mode Door Replacement - Upper >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Upper Mode Door & Defroster Door (Visteon)
    GM826697Courtesy of GENERAL MOTORS CORP.
  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 2: Air Distribution Housing (Visteon)
    GM826686Courtesy of GENERAL MOTORS CORP.
  5. Install the air distribution housing halves.
    6. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  6. Install the screws to the air distribution housing (1).

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

    7. Fig 3: View Of 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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