Has anyone observed an uncontrolled shaking of the steering wheel during cold weater. I make a three point u-turn in my driveway, and between points 1 and 2, the steering whel is all the way to one direction, it began to shake, approx. 15 degrees until I grabbed it tight and stopped it. I noticed that it "wants" to do it when the car is cold. I have not experienced it in the warm weather. The dealer found nothing wrong.