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eBayhttps://www.ebay.ca > ... > HVAC Vent Actuators
NOS 2004 BUICK CENTURY HEATER BLEND DOOR ACTUATOR 52404369 HVAC ; Breathe easy. Returns accepted. ; Fast and reliable. Ships from United States. ; Condition. New ...
eBayhttps://www.ebay.ca > ... > HVAC Vent Actuators
Dorman 604-107 HVAC Air Door Actuator fits Buick Century · C $42.80 ; 2 Heat Heater A/C Fan Air Vent Blend Door Actuator for Chevy GMC Pickup 15-72971 · C $46.84 ...
So little info hard to know what to tell you. Causes can be low charge due to a leak, defective air temperature control blend door or blend door actuator. What exactly is the AC doing? Does the compressor run?
It is likely that one or more of the blend doors or their actuators are stuck. Before any repair action is done, try allowing the HVAC system to recalibrate itself. To do this, turn all HVAC controls and switches to their OFF or CCW postions, then disconnect the battery for about 10 minutes. Reconnect the battery, but do not touch any of the HVAC controls or switches for about 2 -3 minutes. If this does not cure the problem, the HVAC system will need to be diagnosed. Access to the blend doors and actuators may require some disassembly of the center dash area.
this problem is caused in almost all cases by a failed actuator that moves the door insiode the heating/ac duct to change the outlet temperature, it is called the Air Temperature Control Blend Door actuator.
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