HokieCJ7

I have an '01 base model 5 speed cavalier. Zero thrills! I have an awful vibration when I apply the brakes even slightly at highway speeds. I have since replaced the rotors, pads, drum and shoes. The vibration is flet all around, not only in the steering wheel. As a side note, if I pull up on the berke a couple of clicks at highway speeds, I get the saem bad vibration. That seems to tell me its not coming from the front brakes. I do not know what else to do.

Any help at ALL is greatly appreciated.

Thanks!!!