AT 55 MPH TRUCK BECAME SLUGGISH/HARD TO STEER WHILE ROUNDING CURVE. STEERING SEEMED TO BE UNRESPONSIVE AND RESULTED IN HEAD ON COLLISION WHICH RESULTED IN 1 DEATH IN THE ONCOMING VEHICLE. MY TRUCK OVERTURNED UPON IMPACT, AND WAS TAKEN TO TRAUMA CENTER WITH CUTS/BRUISES AND HEAD WOUND.