Lose Power Steering problems of the 2010 GMC Terrain

While driving the stability track service lift comes on, the abs, brakes, service all wheel drive, as well as the service power steering at which time I lose power steering. It also feels like it is accelerating sluggishly when drive sometimes. This happens and goes off sometimes with out me turning the car off or stopping but other times I have to pull over and wait a few minutes after turning the car off. It happens various times. At one moment it is driving fine and then these lights come on. When taken to dealership the lights have gone off and they get no codes.

While driving the stability track service lift comes on, the abs, brakes, service all wheel drive, as well as the service power steering at which time I lose power steering. It also feels like it is accelerating sluggishly when drive sometimes. This happens and goes off sometimes with out me turning the car off or stopping but other times I have to pull over and wait a few minutes after turning the car off. It happens various times. At one moment it is driving fine and then these lights come on. When taken to dealership the lights have gone off and they get no codes. I was told the that it says a miscommunication and no code is recorded. The service light issues happen on city streets. The sluggish acceleration happens on both city and highway. I have been to the GMC dealer several times over the last 2-3 weeks.