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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1151 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Mode Door Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Mode Door In The HVAC Module Assembly
    GM860442Courtesy of GENERAL MOTORS CORP.
  1. Connect the left hand and right hand mode door levers to the mode door.
    2. IMPORTANT: Align the slot in the left hand mode door lever with the mode door main lever pin. Align the pin on the right hand mode door lever with the slot in the secondary mode door.
  2. Install the mode door.
    3. Fig 2: View Of Air Distribution Cover Screws
    GM860404Courtesy of GENERAL MOTORS CORP.
  3. Install the air distribution cover.
    4. NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Install the air distribution cover screws.

    Tighten:  Tighten the screws to 0.9 N.m (8 lb in).

    5. Fig 3: Locating Defroster Door Spring & Defroster Door Lever
    GM860412Courtesy of GENERAL MOTORS CORP.
  5. Connect the defroster door spring (1) to the air distribution cover.
    6. IMPORTANT: Align the slot on the secondary defroster door lever with the pin on the mode door main lever.
    Fig 4: Identifying Secondary Defroster Door Lever
    GM860400Courtesy of GENERAL MOTORS CORP.
  6. Connect the secondary defroster door lever to the secondary defroster door.
    7. Fig 5: View Of HVAC Module Mounting Brackets
    GM828096Courtesy of GENERAL MOTORS CORP.
  7. Install the right HVAC module mounting bracket to the HVAC module assembly.
  8. Install the right HVAC module mounting bracket screws.

    Tighten:  Tighten the screws to 1.8 N.m (16 lb in).

  9. Install the left HVAC module mounting bracket to the HVAC module assembly.
  10. Install the left HVAC module mounting bracket screws.

    Tighten:  Tighten the screws to 1.8 N.m (16 lb in).

    11. IMPORTANT: Align the counted number of threads on the mode actuator push rod (2) with the tip of the retainer clip (1).
    Fig 6: Identifying Push Rod Retainer Clip
    GM828359Courtesy of GENERAL MOTORS CORP.
  11. Connect the mode actuator push rod (2) to the retainer clip (1).
  12. Close the push rod retainer clip (1).
  13. Install the I/P carrier. Refer to Instrument Panel (I/P) Carrier Replacement in Instrument Panel, Gages and Console.
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