Both Sliding Doors Open But Then Close
 

I have a 2005 Caravan. Strange thing happened yesterday. Both doors will automatically open and get all the way open, but then they immediately close. If I manually open the door but then tap the button to close them, they make noise like they are trying to close but nothing happens. I thought maybe some ice had gotten in there (I'm up in Minnesota) but I've had the van in a warm garage now all day and still have the same problem. Anyone have seen this before or any ideas?

Both doors fail at the same time?