I have a 2020 Hyundai Venue SEL. Recently, the car slowed to a stop in the middle of the highway, even when the gas is pressed. After getting the car off the highway, the car couldn't drive above 25-30mph and made a growling hum(?) when it turned. The dealership said that they couldn't find anything wrong and reset the transmission, but the car still had the same problem, and it couldn't drive uphill. Any ideas on what the issue may be?