Curious on how the DIC determines when to give an ice possible warning in the DIC. I drive a 2006 G6 GT coupe and have been watching when I get the message. Spring really hasn't arrived here in Mass as of yet. Some mornings I leave for work and it will be below freezing and not get a message at all. Other times, it will be above freezing and when the temp drops to 37 degrees F, I may get a message. I realize that it would be temp driven, but is there some sort of humidity or moisture sensor as well. I cant seem to find a logical pattern.