Hello, I own a 2017 XTS with only 27,000 miles on it. The check engine light came on the other day so I went to Auto Zone and used their diagnostic scanner to check the code. It showed P 0442 (1/1) Permanent (EVAP) System Small Leak Detected. Has anyone here had an evaporative emission system leak on their Cadillac? I'm pretty surprised by this because of the relative newness of and low mileage on the car. Any thoughts or past experience by someone dealing with the same issue would be appreciated, thanks!