2006 Nissan Pathfinder steering problems

I was driving on hwy and I went to go around a curve and my steering wheel locked up I went off the road and came to a stop looking up at the bridge. When I went off the road my truck hit a hill (it hit around by my radiator) my truck then flipped and then hit another hill (hit by my radiator again) and came to a stop. My airbag didnt not deploy until my truck stop moving. And my seat belt did not lock me in place. I was slung around my front seat.

Approximately sept of 2008, the steering wheel of our 2006 nissan pathfinder started becoming extremely hard to turn left or right, almost to the point that I could not turn. I would dread having to make a turn. Then a grinding sound started and a clicking, and has since gone away. Now, our steering wheel can move up and down while we are driving. It is very loose and is becoming a hazard. The cruise also shuts itself off while we are driving.