What is code 52 for the 2014 chevy sonic?

Code 52 on a Chevy Sonic is a maintenance reminder code, it will turn on at 100,000 miles and it is there to remind You to get Your vehicle to a Chevy dealer or service center for a service. The 100,000 mile service is a larger than normal service job and includes replacing the timing belt on Your engine. The timing belt is an important component to Your car that helps keep the timing accurate in the motor. If this belt breaks then it can cause catastrophic engine failure so it is a good idea to get it done. A timing belt service on Your Sonic should cost around $500, so it is more expensive than normal, but it is a very labor heavy service to get done.