One problem related to anti-theft controller has been reported for the 2015 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Chevrolet Impala based on all problems reported for the 2015 Impala.
A few weeks ago I got a warning indicating the vehicle detection sensor was not functioning and then yesterday while stopped and in gear at a red light all the screens flickered and gauges when all over the place while throwing over 30 codes across the screen including anti-theft which locked me out of everything. I took the vehicle in immediately and they confirmed over 30 codes were thrown. Looks like a bad design on the sensors themselves allows corrosion over time especially in colder climates like mine.