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Removal & Installation (Temperature Doors)

WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the HVAC module assembly. Remove the screws retaining the right air temperature actuator. Remove the right air temperature actuator. Remove the air inlet housing retaining screws. Remove the air inlet housing. Remove the HVAC module assembly upper mounting screws.
  2. Release the retaining tab securing the HVAC module assembly halves. Separate the upper and lower HVAC module assembly halves. See Fig 1. Carefully pull the air temperature doors apart in the center to remove the air temperature doors from the HVAC module assembly case.
  3. Remove the HVAC module assembly seal that is located between the upper and lower cases. Remove the air temperature door. Carefully align the air temperature doors into the HVAC module assembly case.
  4. To assemble, install the air temperature door. Install the new case seal to the HVAC module assembly case. Wet the upper evaporator core seal with water. Inspect the condition of the retaining tab on the upper module case prior to installing the lower module case. If the retaining tab is broken or damaged, install an external retaining clip (P/N 52458793, or equivalent).
  5. Align and install the upper module case to the lower module case. Align and secure the retaining tab. Install the HVAC module assembly upper mounting screws. Tighten the screws to specification. See TORQUE SPECIFICATIONS . Install the air inlet housing. Install the air inlet housing retaining screws. Tighten the screws to specification.
  6. Position the right air temperature actuator, then align the slots in the electric actuator drive to the flats of the shaft. Align the locating hole to the alignment pin on the HVAC module case. Slide the actuator drive on the shaft.
  7. The actuator drive should set completely on the shaft and the mounting holes should be flush with the mounting screws on the HVAC module case. Install the screws to the right air temperature actuator. Install the HVAC module assembly.
Fig 1: Separating HVAC Housing Halves
G00192101Courtesy of GENERAL MOTORS CORP.
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