NHTSA Complaint #11534373 — 2016 CHEVROLET SILVERADO 3500

On June 27 2023 we we driving on a two lane highway pulling our travel trailer. We had driven 5 hrs the previous day parked unhooked and drove around the area with no issues. The following morning we left an were just entering the highway speed zone when the truck abruptly crossed the centreline. I managed to correct and stop n the shoulder and noticed 6-8” of play in the steering wheel. I dropped the trailer and slowly drove back to the town to try and see what the issue was. The vehicle continued to move left and right with no input from me. It was determined that the steering box was leaking and when steering was input a thumping could be felt in the tires but not in the steering wheel. The shop determined the box sector shaft adjustment shaft was nearly backed out completely. I contacted the dealership that services my truck about what should be done and they stated “replace the steering box” which we did. Had there been on coming traffic this would have been a fatal or serious collision and it is doubtful this defect would have surfaced as a causal factor.