It is controlled by a blend door actuator which is a small electric motor.
Blend door actuator replacement.
The blend door actuators in a buick are electrically operated by blend door motors.
The blend door or vent door mixes warm and cool air to be sent to your vents.
An actuator can go bad in of two ways.
The average cost for a hvac blend door actuator replacement is between 309 and 363.
What is blend door actuator replacement.
Labor costs are estimated between 204 and 258 while parts are priced at 105.
A computer assigned to this duty controls the blend door actuators.
Usually it is the actuator motor that has failed when the actuator is no longer working.
When you turn the knob on your dash to the desired temperature the actuator moves the blend door to achieve the proper mix.
In this video i explain how to replace the a c blend door actuator.
These are tied into several sensors that detect the outside temperature to compensate for incoming air inside air temperature and even a sensor to signal when a door.
And what causes them to mess up.
First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.