The vehicle was purchased new with less than 50 miles on it. the vehicle sways and drifts at highway speeds. it moves left and right in the lane. i don't feel safe in the vehicle. i don't feel i am in control of the vehicle. i notice this at speeds of about 45 mph and above. i had it into the chevrolet dealership and they reprogrammed the control module of the electric steering but the problem still persists. gm has given me no satisfaction and no help with this matter. i don't want to drive this vehicle at highway speeds again until this is fixed.