WHILE VEHICLE WAS UNDER WARRANTY I COMPLAINED OF FADING BRAKES WHILE TRAVERSING ROUGH SPOTS IN ROADS.DEALERSHIP MECHANICS SAID IT WAS THE ABS SYSTEM. HE SAID I COULD DISCONNECT IT?BUT I CHOSE NOT TO. NOW MY 1999 SILVERADO HAS AN EVEN BIGGER PROBLEM. WHILE PERFORMING A GENTLE STOP THE BRAKE PEDAL BECOMES HARD AND VEHICLE WILL NOT STOP UNLESS I STAND ON THE BRAKE PEDAL. I CRASHED THROUGH MY GARAGE DOOR THE LAST TIME THIS HAPPENED. MY BRAKES WERE INSPECTED AND THEY ARE ALL IN GOOD ORDER. THE MECHANIC DID HOWEVER NOTICE THAT THE ABS WAS ON CONSTANTLY. ( SO DOES SOMEONE HAVE TO DIE BEFORE ACTION IS TAKEN ON THIS MATTER) THERE IS NUMEROUS COMPLAINT ABOUT THE ABS SYSTEM IN THIS TRUCK.