Ok, so i have a 94 ls. My ABS light just came on and everytime i start my car, there is this buzzing sound coming from my ABS. I know that that sound is the ABS trying to get pressureized. Now, just recently, whenever i put my foot on the brake pedal, i can feel the pedal vibrate whenever the ABS buzzes. I havent had the chance to check the code yet but i will get to it today, but for now, could anybody know what causes this problem?

thanks in advance...

 

anybody?