Blend door issues

[NFunderburk]

Help! I have an 03 Tahoe and I just replaced both the blend door actuators and it still won’t change the direction of air flow from defrost. This should have fixed the issue but it did not. Any help would be greatly appreciated.

 

[Brandon2489]

Welcome to the forums. Also there may be a relearn procedure.

 

[Trey Hardy]

Should be able to pull the hvac fuse under the hood wait a min put it back start the car don’t touch anything ac should self calibrate itself that’s how I do mine in my 07 anyways the door actuator will have to be calibrated to operate properly

 

[swathdiver]

Help! I have an 03 Tahoe and I just replaced both the blend door actuators and it still won’t change the direction of air flow from defrost. This should have fixed the issue but it did not. Any help would be greatly appreciated.

The driver and passenger temperature actuators do not control the direction of flow, that's the Mode Actuator.

 

[PNWYukon]

Mode actuator is next to the gas pedal.