Driver Information Center (DIC) Description and Operation: English/Metric
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
The English/Metric mode is used to toggle between English and Metric units and can be accessed through the DIC Vehicle Info switch.