woodsdog

Hi I have a 2016 Silverado LT and we went into the PA mountains on Columbus day weekend and on our way home the compass heading feature on the DIC went to "CAL" for calibrate. I read my manual and it says to drive a short distance in an open area and the compass heading should return. Well, it has not returned. Any suggestions? Is there a manual way to calibrate? Thanks for any information or assistance you can provide.