We had the first snowfall of winter today and my heat won't work on my 05 Grand Prix base model. Last week the blower worked just fine on all levels but wouldn't blow warm air. I took it in for an oil change on Saturday and had them top off the coolant levels. After the oil change I had heat. This morning I get in to go to work and now the blower stopped working. It won't blow air out of the vents on any level or setting. It was a very cold hour long drive in 20 degree weather. I want to get to the bottom of the problem fast as winter is fast approaching. Any idea on why the blower would quit?
