Odometer from metric back to miles

[Vulcancruiser]

USA 2010 Vibe which I think has gotten stuck on Kilometers. Seems like I used to be able to switch between the two with a certain switch maneuver but now its not working. Called the dealer and he said that Kilometers and miles are both on the Vibe but he couldn't recall how to do it either, and the manual has nothing specific. Anybody got any ideas.......I did run an Ultragauge on it for a while and now I'm wondering if that had something to do with it.