I just took delivery of a 2019 Limited 6.7 Crew Cab. While using the Automatic setting for the climate control, when the set temperature is reached, the entire system shuts down. No air movement through the vents. Is this normal? Previous vehicles would continue to blow air through the vents and the a/c compressor would cycle on and off to maintain the desired temp. Am I missing something among all of the buttons and options?