2011 Cadillac DTS Owner's Manual - Page 202

Speedometer and Odometer The speedometer shows the speed in both miles per hour (mph) and kilometers per hour (km/h). See "MPH (km)" under DIC Operation and Displays on page 4 ‑ 58 for more information. The odometer mileage can be checked without the vehicle running. The vehicle's odometer works together with the driver information center. Trip A and Trip B can be set on the odometer. See "Trip Fuel" under DIC Operation and Displays on page 4 ‑ 58 for more information. If the vehicle ever needs a new odometer installed, the new one is set to the correct mileage total of the old odometer. Tachometer This gauge indicates the engine speed in revolutions per minute (rpm). 4-44