BRAKES FAIL AT LOW SPEED, TRY TO GO INTO ANTI-LOCK. CHANGED COMPLETE BRAKES,ROTORS,PADS ETC. ON ALL FOUR(4) WHEELS OF THE VEHICLE. PROBLEM STILL EXISTS. SCHEDULED FOR RECHECK SEPTEMBER 30/03 FOR REVIEW OF HOSES AND LINES ALSO WILL PUT ON COMPUTOR FOR FAULT READINGS. TRUCK CRASHED INTO A WOOD PILE AT OUR SUMMER HOME NO PERSONNAL INJURIES BUT SOME PAINT SCRATCHING. DISCONNECTED THE FUSE FOR THE ANTI-LOCK BRAKES HAD NO PROBLEM WITH BRAKES FAILING JUST THAT ABS LIGHT AND HAND BRAKE LIGHT STAYED ON ALL THE TIME. PUT THE FUSE BACK IN AND PROBLEM STILL EXISTS THIS IS WHY IT WILL BE RECHECKED SEPTEMBER 30/03 TO READ FAULTS AS THEY ARE STILL FAILING. VERY SCAREY WHEN ALL OF A SUDDEN NO BRAKES AT LOW SPEED.