GM-GMC: brakes, brake fluid reservoir, abs brake

Question
i got a 1998 gmc 350 1500 4x4 it doesnt seem like i got enough brakes i bleed all four tires an they still feel the same they were fine about 4 days ago but the brake light came on an they just dont feel right

Answer
well first thing does it have abs? and is it an abs brake light? and what symptom does it have? is it a soft pedal low pedal or spongy pedal. and make sure you follow manufactures spec. for bleeding as they can verry. typically you start from the farthest away from the brake fluid reservoir and the one closest last