My Z51 C7 now has about 1100 miles of South Florida driving. After warm-up (say 10-15 miles), the large analog gauge on the lower right of the display indicates 220 degrees. But if you toggle up the performance icon and get the functions listing (near the center of the tach circle) the top line-engine temperature - reads lower. Somewhere between 180 and 200. Never has matched the analog needle indication of 220. What am I missing here? Different sensor locations?