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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 910 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Defroster Door Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the defrost door (2) to the lower module.
  2. Install the air temperature door.
  3. Install the mode actuator to the module.
  4. Install the mode actuator to the mode door.
  5. Install the actuator rod retaining clip.
  6. Connect the mode actuator vacuum harness.
  7. Install the air temperature actuator to the module.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  8. Install the air temperature actuator screws.

    Tighten 

    Tighten the screws to 1.9 N.m (17 Ib. in).

  9. Connect the air temperature actuator electrical connector.
    Fig 1: Installing Defrost Door To Lower Module
    G01466992Courtesy of GENERAL MOTORS CORP.
  10. Install the screws to the heater/vent module halves.

    Tighten 

    Tighten the screws to 4.5 N.m (40 Ib. in).

  11. Connect the actuator linkage to the door end.
  12. Install the heater/vent module. Refer to HEATER/VENT MODULE REPLACEMENT  .
    Fig 2: Installing Screws To Heater/Vent Module Halves
    G01466993Courtesy of GENERAL MOTORS CORP.
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