The contact owns a 2016 Chevrolet Colorado. The contact stated that while driving at various speeds the vehicle would have a sudden loss of power steering. The failure occurred intermittently. The contact believed the check engine light, traction control, abs, and stability track warning lights and or messages become illuminated. The vehicle goes into limp mode causing the contact to have to turn the vehicle on and off several times. The contact stated that while their son was driving approximately 5 mph, on icy road conditions, the power steering suddenly failed to cause the driver to lose control of their vehicle. The vehicle ended up veering off the side of the road into a ditch about 6 feet deep. The air bags did not deploy. The driver had no injuries and no medical attention was needed. A police report was not filed. The vehicle had to be lifted out of the ditch and then towed. There was no damage. The vehicle had not been repaired. The manufacturer was made aware of the failure. The approximate failure mileage 140,000.