ray.d919

I have noticed that when i drive the my blazer, i am having to put the brake pedal to the floor board in order for it to start slowing down? What could the problem be?

i have a S10 Blazer 4.3. The problem i am having is ac and heat isnt working at all. when i mess around with the vent switch i do hear noises coming from behind the switch. But i dont have defrost or anything. Air and heat doesn't come from the vents what so ever. If someone can help me then i would appreciate the help!