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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 >> Air Temperature Door Replacement >> Removal Procedure

Removal 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. Remove the HVAC module assembly. Refer to HVAC MODULE ASSEMBLY REPLACEMENT  .
  2. Remove the temperature door lever bolt (3) from the HVAC module.
  3. Disconnect and remove the temperature door lever spring (2).
  4. Disconnect and remove the temperature door lever (1) from the temperature door.
    Fig 1: Replacing Air Temperature Door
    G01498995Courtesy of GENERAL MOTORS CORP.
  5. Remove the air inlet housing retaining screws.
  6. Remove the air inlet housing.
    Fig 2: Removing Air Inlet Housing Retaining Screws/caption>
    G01498996Courtesy of GENERAL MOTORS CORP.
  7. Remove the right HVAC module mounting bracket screws.
  8. Remove the right HVAC module mounting bracket.

    Important:  The HVAC module assembly upper retaining screw is located under the right HVAC module assembly mounting bracket.

  9. Remove the HVAC module upper retaining screw.
    Fig 3: Removing Right HVAC Module Mounting Bracket Screws
    G01498997Courtesy of GENERAL MOTORS CORP.
  10. Remove the HVAC module assembly to dash panel sound barrier seal.
    Fig 4: Removing HVAC Module Assembly To Dash Panel Sound Barrier Seal.
    G01498998Courtesy of GENERAL MOTORS CORP.
  11. Remove the screws retaining the heater outlet duct.
  12. Remove the heater outlet duct.
    Fig 5: Removing Screws
    G01498999Courtesy of GENERAL MOTORS CORP.
  13. Remove the heater core cover screws.
  14. Remove the heater core cover.
    Fig 6: Removing Heater Core Cover
    G01499000Courtesy of GENERAL MOTORS CORP.
  15. Remove the heater core pipe retaining screw.
  16. Remove the heater core.

    Important:  The lower HVAC module assembly retaining screw is located behind the heater core.

  17. Remove the lower HVAC module retaining screw.
    Fig 7: Removing Heater Core Pipe Retaining Screw
    G01499001Courtesy of GENERAL MOTORS CORP.
  18. Remove the lower HVAC module screws.
  19. Separate the HVAC module case halves.
    Fig 8: Separating HVAC Module Case Halves.
    G01499002Courtesy of GENERAL MOTORS CORP.
  20. Remove the air temperature door.
    Fig 9: Removing Air Temperature Door
    G01499003Courtesy of GENERAL MOTORS CORP.
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