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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 866 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Mode Door Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect the left hand and right hand mode door levers to the mode door.

    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.
    Fig 1: Installing Mode Door
    G01499089Courtesy of GENERAL MOTORS CORP.
  3. Install the air distribution cover.
  4. Install the air distribution cover screws.

    Tighten 

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

    Fig 2: Installing Air Distribution Cover Screws
    G01499090Courtesy of GENERAL MOTORS CORP.
  5. Connect the defroster door spring (1) to the air distribution cover.
    Fig 3: Locating Defroster Door Spring
    G01499091Courtesy of GENERAL MOTORS CORP.

    Important:  Align the slot on the secondary defroster door lever with the pin on the mode door main lever.

  6. Connect the secondary defroster door lever to the secondary defroster door.
    Fig 4: Connecting Secondary Defroster Door Lever
    G01499092Courtesy 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).

    Fig 5: Installing Left HVAC Module Mounting Bracket Screws.
    G01499093Courtesy of GENERAL MOTORS CORP.

    Important:  Align the counted number of threads on the mode actuator push rod (2) with the tip of the retainer clip (1).

  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 .
    Fig 6: Connecting Mode Actuator Push Rod
    G01499094Courtesy of GENERAL MOTORS CORP.
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