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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 >> 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 Air Temperature Door
    GM860419Courtesy of GENERAL MOTORS CORP.
  1. Install the air temperature door.
    2. Fig 2: View Of Upper & Lower HVAC Module Halves
    GM825389Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Align the evaporator temperature sensor wires with the opening in the upper HVAC module case. Improper alignment will pinch and/or cut the sensor wires.
  2. Align and install the upper module case to the lower module case.
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the lower HVAC module screws.

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

  4. Install the lower HVAC module retaining screw.
  5. Install the heater core.
    6. Fig 3: View Of Heater Core
    GM825397Courtesy of GENERAL MOTORS CORP.
  6. Install the heater core pipe retaining screw.

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

    7. Fig 4: View Of HVAC/Heater Core Cover
    GM825396Courtesy of GENERAL MOTORS CORP.
  7. Install the heater core cover.
  8. Install the heater core cover screws.

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

    9. Fig 5: Mounting View Of HVAC Module Duct
    GM825398Courtesy of GENERAL MOTORS CORP.
  9. Install the heater outlet duct.
  10. Install the heater outlet duct screws.

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

  11. Install the HVAC module upper retaining screw.

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

    12. Fig 6: View Of Right Side HVAC Module Assembly Mounting Bracket
    GM825399Courtesy of GENERAL MOTORS CORP.
  12. Install the right HVAC module mounting bracket.
  13. Install the right HVAC module mounting bracket screws.

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

    14. Fig 7: View Of HVAC Module Assembly To Dash Panel Sound Barrier Seal
    GM825392Courtesy of GENERAL MOTORS CORP.
  14. Install the HVAC module assembly to dash panel sound barrier seal.
    15. Fig 8: View Of HVAC Module
    GM825400Courtesy of GENERAL MOTORS CORP.
  15. Install the air inlet housing.
  16. Install the air inlet housing screws.

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

    17. IMPORTANT: Align the pin on the air temperature actuator with the slot in the temperature door lever.
  17. Install the temperature door lever (1) to the temperature door.
    18. Fig 9: Locating Air Temperature Door Components
    GM860415Courtesy of GENERAL MOTORS CORP.
  18. Connect the temperature door lever spring (2) to the temperature door lever (1) and HVAC module case.
  19. Install the temperature door lever bolt (3) to the HVAC module case.

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

  20. Install the HVAC module assembly. Refer to HVAC Module Assembly Replacement .
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