Buick Blend Door Actuator Not Working

My Heater And A/c Work But Blow Only Through Defrost Or Floor Vents.temperature And Fan Speed Change Correctly. I Can Hear A Change In...

My Blend Doors Will Not Operate When The Outside Temp Gets Below 50 Degrees. The Blower Motor Is Working Just Cant Get Any Air From Any...

I Just Recently Replaced My Broken Blend Door Actuator. One Of The Disks Inside Was Cracked. Installed The New One And It Still Doesn't...

On My Passenger Side The Air Blows Cold And On The Driver Side The Air Blows Hot. I Know I Have To Replace Place The Blend Door Actuator. I...

Trying To Show My 16 Year Old How To Work In His Car. Its A 91 Buick Regal Gs. The Ac/heat Barely Blows Out Of The Vents, But Is Coming Out...