Chevrolet Silverado Defroster Stuck

My Truck Will Not Switch From Defrost. Do I Need To Replace The Actuator? If So, Where Is It And What Is The Part Number?

When I Switch To Have Air At The Dash Vent, Nothing Comes Out. It Seems To Be Stuck On Defrost And Feet. The Fan Is Working Just Fine Along...

I Have Replaced The Mode Door Actuator, And I Also Replaced The Control Unit. Everything Has Power And Is Working Like It Supposed To But It...

My Air Blows Only From The Defrost Vent. Its Not A/c And Its Not Heat, Just Air. I Can Only Adjust The Power Settings On The Dash. All...

Hello My Name Is Justin From Lethbridge Alberta, I Have A 1982 Chevy Silverado. A Few Years Ago We Started A Lot Of Engine Work And...