Ford F-250 Defroster

I Turned On The Heater, I Tried To Turn The Heat Down. It Was Stuck On The Heater. Itried To Switch It To The Ac,the Defroster,thermastat Up...

Al Of The Airflow Comes Out Of The Defrost Vents Regardless Which Setting Is Chosen

Air Flow Only Comes Out Of The Defroster Vents And Will Not Change With The Knob. Floor,mix, Or Dash Vents.

My Truck Vent Controls Only Work On Defrost Now. I Still Have Full Heat And Full Ac, But Only On Defrost. Are The Doors In The System Vacuum...

Okay, My Normally The A/c Works Great, But When I Go Into Acceleration It Goes To Default Which Is Defrost Then Comes Back. Now I Have That...

Upon Acceleration Ac Goes To Defrost And Then Come Back To Panel. Any Suggestions?

The Heater/defroster Will Not Turn On In My 2000, F250. Is There A Clear Way To Tell If It Is The Switch?

I Have A Strong Smell Of Anti-freeze Coming In The Cab Of My Truck, Especially When The Defroster Is On. What Could Cause This Problem?

Hi! When I Turn On The Heat And/or Defroster Plumes Of Brown Smoke Come Out Of The Vents. I've Tried Letting It Run For 20minutes Or So, And...

My Heater Stays On Defrost And Will Not Go To Floor Or Panel When I Move The Switch To Those Positions