Review on ACDelco GT364 Original Equipment Fuel by Srinivasan Bennett

So if your problem is indeed related to the gas cap, this will solve your problem. Made on my wife's 2012 Chevy Sonic, it fits perfectly. Unfortunately, if you have a vacuum leak somewhere else, it won't fix it. So if you googled the check engine light and it said it MAY be the gas cap and that didn't fix the problem, you have an evaporator leak somewhere else, I'm sorry you wasted your money.