English/Metric Unit Selection
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The units of the DIC and other vehicle displays can be set to English or Metric by pressing the DIC Set/Reset button. Once the preferred units are chosen, the options button is pressed to move to the next mode.