The contact owns a 2020 GMC Sierra 2500. The contact stated that while driving at various speeds, the steering wheel was pulling to the left unintentionally. Additionally, the contact stated that there was significant play in the steering wheel. The contact stated that while driving 35-40 MPH and driving through a puddle of water, the vehicle veered violently at a 60-degree angle into the left lane while the contact was firmly grabbing the steering wheel, nearly causing a crash. The vehicle was taken to the dealer and was diagnosed with upper steering shaft failure. The contact was informed that the upper steering shaft needed to be replaced. The part was replaced. Additionally, the vehicle was taken to a Tire Shop, where the tires were replaced and alignment was performed. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 31,800.