I just bought a 2014 Chevy Spark in July and three months later my car started skipping when stopped/idle. I took it the dealer and they change the coils, fuel pump and sensor. The car is still doing it. I just spoke to the dealer and was told that it is not showing any codes. I he then said that the skipping is normal for this car. This seems to be an issue with this car and I think GM needs to give it a little more attention. I refuse to believe this is normal.