1995 GMC Sierra V8 Two Wheel Drive Automatic
My brake pedal felt very soft and brakes were not sharp. I filled up my brake fluid and tryed brakes again and it was still very soft. I lokked at all my lines and they are not leaking at all but now the brakes are completely gone. I have to put my entire body weight on pedal to get any brakes. Please advise as to what problem might be.