Power Steering Light On problems of the 2012 Ford F-250

Clear and dry road conditions. Factory truck. Driving at 65 mph with steering wheel slightly turned to the left, the road made a transition from concrete to asphalt with a slight rise in road surface and the commonly worded "death wobble" took over violently and rapidly pulling my steering wheel back and forth until I eventually brought the vehicle to a stop as it the truck took itself into the median. Under nearly the exact same conditions around 100 miles later also ending with the vehicle in the median.