Steering linkage problems in the 2015-2016 Ram 2500 are under federal investigation after multiple drivers reported a sudden and complete inability to steer their trucks. It’s believed the issue has to do with a defect in the drag link which connects the right front steering knuckle and the pitman arm on the steering box output shaft.
[S]eparations occurred at the threaded couplers within the linkages that are intended to be used for adjusting the linkage lengths during alignments. In both cases, the drag links and couplers had to be replaced for drivers to steer the trucks.
What a drag.
More details are available on CarComplaints.com.