SUDDEN LOSS OF BRAKING WHILE APPROACHING INTERSECTION; THE BRAKE PEDAL JUST WENT TO THE FLOOR WHEN APPLYING APPROXIMATELY TWO HUNDRED FEET BEFORE INTERSECTION; APPLIED EMERGENCY BRAKE TO EFFECTIVELY STOP;SPEED WAS BELOW 30 MPH WHEN APPROACHING INTERSECTION AND BRAKE LOSS OCCURRED; TRUCK HAS ALSO HAD FOUR "DEATH WOBBLE" EXPERIENCES EVEN WITH PITTMAN ARM AND ASSOCIATED PARTS REPLACEMENT; TWO EXPERIENCES OF SUDDEN ACCELERATION (POSSIBLE JAMMED OPEN THROTTLE) OF THE TURBO, LEADING TO LOSS OF CONTROL; SUDDEN ACCELERATIONS OCCURRED SHORTLY AFTER CRUISE CONTROL USAGE AND TRAVELING LESS THAN 30 MPH; WHILE STATIONARY, VEHICLE HAS EXPERIENCED WIRING HARNESS SHORT AND FIRE ON FIREWALL WHILE CONNECTED TO TRAILER. PICTURES ATTACHED WERE TAKEN WITHIN 12 HOURS OF SUDDEN LOSS OF BRAKES.