Air Conditioner problems of the 2011 GMC Yukon

I was driving with my vehicle in auto 4wd, because we had icy roads. My vehicles rear drive slipped on some ice and then I got a message indicating my stabilizer system was needing work, then the electrical system (instrumentation dash) started to flash on and off. I pulled off the road and turned off my vehicle and then tried to restart it and it would not start. I tried a 2nd time and it started, put it in gear and started back out on the road. My electrical system started to go crazy all of the sudden, all the lights started to flash, my power doors started to lock and unlock simultaneously, the engine started to accelerate its rpm's, and down/up shifting my gears, my dash board instruments started flashing, heating and air conditioning fan was speeding up and slowing down, then turning on and off. I thought my vehicle was possessed by a demon really putting a scare in me. I was scared that it was going to accelerate and I was not in control at all, so I immediately pulled off the road and turned the vehicle off. It would not restart once again, on my 3rd attempt it started. I put it in gear and it went good. I think the instrumentation flashed maybe one or two times, but overall it was driving, thank god, because is was cold out and I was in a rural area. Four days later I drove my vehicle to work, went out to take it to lunch and it would not start, nothing would work, completely dead. I had it towed to shottenkirk Chevrolet in quincy, IL, which is where it is awaiting the diagnostic report. 1/16/2020. I cannot tell you enough, the whole ordeal scared the living daylights out of me.