Buick Rendezvous Vent

The Heat In My Car Only Works When I Step On The Gas. When The Car Is Idling, Cold Air Blows Out Of The Vents. What Could The Problem Be?

The Ac/heater Blows Just Fine, But Only Through The Defroster And Through The Back Vents Slightly But Not At All Through The Front Facing...

I Have Good Airflow From The Vents On Air Conditioning But On Heat There Is Hardly Any Flow Of Air Out Of The Vent. The Very Little Air...

While Driving The Hvac System Suddenly Quit While Operating In Cooling Mode; No Fan On Any Speed Or In Any Vent Position And The Ac/recirc...

The First Time I Turned My Heat On This Year, I Noticed A Funny Smell And Smoke Coming Through My Heater Vents. Every Since, Even With My...