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 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 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.