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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) >> Removal Procedure

Removal 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. Remove the HVAC module assembly. Refer to HVAC Module Assembly Replacement .
  2. Disconnect the electrical connector (3) from the mode actuator (4).
    Fig 1: View Of Mode Actuator
    GM826791Courtesy of GENERAL MOTORS CORP.
  3. Remove the screws from the mode actuator (4).
  4. Remove the mode actuator (4) from the HVAC module assembly (1).
  5. Remove the wiring harness from the air distribution housing (1).
  6. Remove the screws from the air distribution housing (1).
    Fig 2: Removing/Installing Air Distribution Housing (Visteon)
    GM826798Courtesy of GENERAL MOTORS CORP.
  7. Remove the air distribution housing (1) from the HVAC module assembly (2).
  8. Remove the screws from the air distribution housing (1).
    Fig 3: Air Distribution Housing (Visteon)
    GM826686Courtesy of GENERAL MOTORS CORP.
  9. Separate the air distribution housing halves.
  10. Remove the lever from the upper mode door (4).
  11. Remove the lever from the defrost door (2).
    Fig 4: Upper Mode Door & Defroster Door (Visteon)
    GM826697Courtesy of GENERAL MOTORS CORP.
  12. Remove the door assembly (3) from the left air distribution housing (1).
  13. Remove the mode door (4) from the door assembly (3).
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