Hello I am new here and have a 1993 Buick Roadmaster i just recently purchased. Well now there is no heat or ac blowing out the vents. I can work all levels its just not flowin any air. its getting cold here now and i just want heat. I think it may be the blower motor. The rear defrost is the only thing i can get to owkr from t he climate control center. IF you do believe it is the blower motor. Where is it and how do i get it changed out. Thanks for all the input.