My 2014 has developed a cabin air flow direction issue that manifests as if no air outlets are open. This is not an air temperature issue. I get no air flow regardless of temperature setting.
I've tried the "pull fuse 5" stepper motor reset. That appears to trigger the motor to re-teach itself its zero point, but I still obtain no air flow through any of the outlets. No air out the defrost ducts at the base of the windshield. No air out the dash vents. No air out at the floor.
The blower fan motor speeds up and slows down with changes to the manual fan speed control. When the fan is running slowly / quietly I can hear a sound akin to a motor pulsation that occurs when changing the center stack icons from dash to floor to defrost. There is no air delivery change accompanying the icon selection.
Re-circulation, whether off, or active, or automatic, makes no change in the air flow. The air inlet under the hood in the cowl at the base of the windshield is not blocked with leaves, snow or ice.
Is there a linkage or rod or other mechanical connection between the stepper motor and the moving air flap(s) that might have become disconnected,
Or do my symptoms imply a vi$it to the Chevy dealer is in my near future?
Oh, and Merry Christmas to you and yours.