FORD DEFROSTER NOT WORKING

I Have A 2004 F350 Diesel Ford Truck. The A/c This Morning Is Only Blowing Out The Defroster Vent. Actually The Front Vents Are Not...

My Control On The Panel For Defrost, Vent And Floor Does Not Switch Between Each Setting. Stays On Defrost. I Keep Seeing On Youtube That...

Just Recently When I Turn On My Defroster, Air Blows Out Of The Front Vents Instead Of The Top Vents. When I Switch To The Front Vents The...

My A/c And Heat Only Work Out Of The Defrost Vents On Low Or High Speed But Nothing Out Of The Floor Or Front Fascia Vents. Could This Be...