I was backing out of a parking space in reverse as I have done multiple times and the second I took my foot off the brake pedal to go into reverse, my car shot out at a high speed and hit a parked car on the other side of the street. Not realizing that there was an auto malfunction, I attempted to turn around my car to see the damage to the other car and when I went into reverse again to turn around, the car sped up again at high speed, did a 180 degree turn in reverse and hit two additional parked cars. Luckily, no one was hurt. I am 100% certain that I did not depress the accelerator pedal to cause the car to go at that speed in reverse twice! We contacted General Motors which supposedly had their engineers look at the mechanicals of the car but the only information we received from them is that the car did accelerate both times at 99% of capacity. The air bags did not deploy so the crash computer did not activiate. GM either did not examine the soft ware on the car, or, if they did, that information was not shared with us. If I had been in a crowded parking lot, the consequences could have been catastophic.

- Hyde Park, NY, USA

The driving mode don't stay in the correct control for example the SUV has three components Tour, Sports, Snow and ice...while driving in Tour mode the vehicle goes to sports on it owns. The electrical dash board cuts off and resets its self while in driving. Scary

- Perris, CA, USA