Ice Possible display

[rodgers]

I own a 2005 H2 SUT. I love the truck but recently everytime I start the vehicle ; the display on the dash reads ICE POSSIBLE. It stays on for about 10 seconds and then goes off. It will also pop up sporatically while driving. The temp outside has never been below 55 when this happens. The dealership is looking into it but says they have never seen it before. Has anyone ever experienced anything like this. I would love to get this stopped. Is there a dedicated sensor that detects only the outside temp. I haven't notices any other problems as of yet.