Vehicle Speed
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The driver information center displays the vehicle speed based on vehicle speed serial data information from the ECM. The vehicle speed can be displayed in English or Metric Units. English or Metric Units can be selected from the DIC vehicle information menu. The DIC displays vehicle speed as ###.km/h or ###.mph.