I had just left the driveway at my in-laws house, which is approx. an hour and 45 minutes from my home. Within moments, randomly, the sun roof popped open, as if someone had hit a remote. It would not close, and after trying for a bit, decided to drive home and we would address it there. When I hit the open road, the roof went the rest of the way open and then about two miles from the house, I starting choking on the smell of burning plastic. I immediately pulled over on to the shoulder of a side road, turning off the car. My husband was in a vehicle behind me and came over and we were both very concerned the vehicle was going to catch on fire. He tried to pull the fuse in the panel, but when we turned the vehicle back on, there was smoke coming from the sunroof motor area, and the smell was atrocious. The inside hood liner was very warm near the rear of the vehicle with the motor. At that point, we decided to call a tow truck, because it was obvious there was an electrical short. Because the sun roof was stuck open, we had to get a car cover to protect it from the rain coming in. The dealership investigated the next day, and confirmed there was an electrical short that was throwing high-voltage power in to the sunroof. It had melted the motor and wires around it, and had we gone any further, the voltage would have caused a more significant fire. They had to do significant repairs, costing $1400, as well as some clean-up of the interior to try and ensure we weren't continuing to breathe burnt-plastic fumes.

- Rochester Hills, MI, USA

The interior windshield, side widows and rear window accumulates moisture and frost and it drips down on my dashboard, down my windows, and forms a puddle in the rear of my vehicle as it melts down. I-??m afraid this is going to destroy my electrical system and the interior of my vehicle. I have to wipe up the water with a towel.

- Danville, VA, USA

At 15,238 miles I was at gas station to fill up vehicle only to discover the fuel filler flap was broken and could not get gas nozzle in vehicle for fill up. Immediately had my mechanic look at it and they were able to repair it. They were able to reattach spring but could not attach sealing plate without a disassemble. Had to replace the fuel neck assembly. No warning lights had come on dash for gas vapor, or other things. I have pictures of mileage and broken fuel filler cap. This could have been disastrous if I was in some small town that could not get parts or had run out of gas somewhere or if gas vapors started leaking.

- Sun City West, AZ, USA

My rear ac unit blows hot air no matter what temp I choose or mode that is selected. This issue was found a couple of days of purchase in January.

- Phoenix, AZ, USA

Check engine light came on at 60,000 miles. Car is a 2017, 3 years old. Diagnostic code shows the alternator is no good. Car just surpassed warranty. GM could not provide a reason for the alternator going bad on such a new vehicle.

- Southington, CT, USA

I was driving on the freeway at full speed when the car abruptly shut off. I had no power and all dash lights went black. It was very frightening. I don't know how but I managed to get it to the side of the road. It has been in the shop for over a week and they still have not found the cause. I hope this does not happen to anyone else.

- Palm Desert, CA, USA

Car has electronic child safety door locks activated when using the hard button that typically locks only windows. Wife took a nap in back seat on lunch break at work, didn't realize window lock button was accidentally engaged, locked with remote from back seat while car was running. Door remote would not allow the back doors and passenger door to remain locked and door handles would not open from inside even when using the remote. She was trapped in the back. With a very bad back and knee it was not easy to climb to front driver side door to unlock from there, the only place this would work. If locking with the remote, unlocking with remote should be possible and was not. Literally trapped in back seat and only way out is to get to the front seat to unlock from there. What if grandma was back there when something happened like car shut off? very bad situation and a life safety issue. I've never owned a car that had electronic child locks tied to window lock switch. Should not be allowed to be trapped in car.

- Glen Mills, PA, USA

Vibration during low speed turns, especially left-hand turns, and more noticeable if accelerating

- Port Gamble, WA, USA

Keyless, start/stop engine keep running awhile I lock doors in which I forget turn engine off. Not safe and could getting engine fire cause long running engine, idle too long. Could void warranty if damage engine

- Chester, PA, USA