First the electric motor can burn out rendering the unit non responsive so nothing changes when the temperature or.
Test blend door actuator motor.
Disconnect electrical connector c2044 from remote climate control module.
An actuator can go bad in of two ways.
It opens and closes the blend door to provide the requested air temperature.
Bevel engineering blend door actuator replaces oe 89018365 604 106 52402588 fits 1994 2012 chevrolet chevy gmc silverado 1500 2500 tahoe sierra hvac air blend control motor heater blend.
Learn how to reset the hvac actuator with acdelco.
Diagnose and fix a blend door actuator.
The blend door actuator is controlled by the hvac controller.
A blend door actuator is made up of an electric motor that turns a plastic gear set in one direction or another which is connected to an air control door pivot at the final drive of the unit.
The test procedures are below give me few moments to upload the rest of the information.