2017 Chevrolet Volt cruise control problems

I purchased a new 2017 chevrolet volt equipment with automatic parking assist. On november 1, 2017, I was driving on bath street in santa barbara. I decided to park on bath at pueblo street. The first time, I engaged the apa feature to assist with parallel parking, I followed the instructions on the dashboard. After coming to a complete stop, I followed the direction to shift the car into reverse.

The cruise control does not work every so often. It seems to happen when I use a lot of the steering control to increase and decrease the speed. It's I took it to the dealership 2 times and they can't find the problem. I don't have specific dates when this happened but it happens enough. Other things that happens are 1) the volt has a charge setting that optimize to start charge delay depending on when you schedule when you plan to leave so the car will not be left fully charge for a long time.