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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 >> Air Temperature Door Replacement >> Removal Procedure

Removal 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.
  1. Remove the HVAC module assembly. Refer to HVAC Module Assembly Replacement .
    2. Fig 1: Locating Air Temperature Door Components
    GM860415Courtesy of GENERAL MOTORS CORP.
  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.
    5. Fig 2: View Of HVAC Module
    GM825400Courtesy of GENERAL MOTORS CORP.
  5. Remove the air inlet housing retaining screws.
  6. Remove the air inlet housing.
    7. Fig 3: View Of Right Side HVAC Module Assembly Mounting Bracket
    GM825399Courtesy of GENERAL MOTORS CORP.
  7. Remove the right HVAC module mounting bracket screws.
  8. Remove the right HVAC module mounting bracket.
    9. 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.
    10. Fig 4: View Of HVAC Module Assembly To Dash Panel Sound Barrier Seal
    GM825392Courtesy of GENERAL MOTORS CORP.
  10. Remove the HVAC module assembly to dash panel sound barrier seal.
    11. Fig 5: Mounting View Of HVAC Module Duct
    GM825398Courtesy of GENERAL MOTORS CORP.
  11. Remove the screws retaining the heater outlet duct.
  12. Remove the heater outlet duct.
    13. Fig 6: View Of HVAC/Heater Core Cover
    GM825396Courtesy of GENERAL MOTORS CORP.
  13. Remove the heater core cover screws.
  14. Remove the heater core cover.
    15. Fig 7: View Of Heater Core
    GM825397Courtesy of GENERAL MOTORS CORP.
  15. Remove the heater core pipe retaining screw.
  16. Remove the heater core.
    17. IMPORTANT: The lower HVAC module assembly retaining screw is located behind the heater core.
  17. Remove the lower HVAC module retaining screw.
    18. Fig 8: View Of Upper & Lower HVAC Module Halves
    GM825389Courtesy of GENERAL MOTORS CORP.
  18. Remove the lower HVAC module screws.
  19. Separate the HVAC module case halves.
    20. Fig 9: View Of Air Temperature Door
    GM860419Courtesy of GENERAL MOTORS CORP.
  20. Remove the air temperature door.
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