Could be the power steering pump? I'm not sure if they're electric these days but could be. With the belt driven power steering a slight whine or humming sound is normal. When cranking the wheel all the way it's a good idea not to. Just back off on it a bit till the sound stops
The US Cruze has electric steering. My 2012 diesel has hydraulic steering and my daughter's 1.6T SRI-V hatchback has electric steering. To drive the hydraulic feels a bit better, but there is not much in it. Neither car makes a noise on full lock.