Steering Noise problems of the 2017 Chevrolet Traverse

Today I started to develop a whining noise and the steering has started to become increasingly harder to turn in the past week. It is hard to turn at low speeds. There have been various times where I have been unable to maneuver the vehicle when trying to park due to the steering becoming very stiff. I've also had a close call getting into an accident while making a u-turn due to the steering being nearly impossible to turn today. This is very unsafe. I was try to turn left into a parking drive way with oncoming traffic and cars behind me. Luckily they stopped. I couldnt make the turn at once. The wheel was too tight and I didnt have the strength to turn the wheel enough to the left to complete the turn. I had to go back and try again. I hit the sidewalk curb. And to go back and forth to get the car in a position enough to turn into the drive. I had a car shop check to power steering fluis and there was enough. They advised I come back because they were going to close so they could check further under the vehicle.