DT*: THE CONTACT STATED WHILE DRIVING 68 MPH ON A DRY 4 LANE HIGHWAY, THE DRIVER ATTEMPTED TO CHANGE LANES TO THE LEFT, AND THERE WAS NO REACTION FROM THE STEERING. THE STEERING WHEEL WAS ABLE TO BE TURNED, BUT THE VEHICLE DID NOT RESPOND AT ALL. THE BRAKES WERE APPLIED, HOWEVER THE VEHICLE COLLIDED WITH ANOTHER TRUCK, AND CROSSED INTO A GRASS MEDIAN WHICH STOPPED THE VEHICLE. A POLICE REPORT WAS TAKEN AT THE SCENE. THE VEHICLE WAS TOWED TO A SERVICE DEALER, WHO DETERMINED THAT THE TIE ROD DRAG LINKS HAD DETACHED FROM THE BALL JOINT. THE BOLT REMAINED INTACT, BUT THE PRESSURE BUSHING SEPARATED.