GM Service Manual Online
For 1990-2009 cars only

The speedometer shows the speed in both miles per hour (mph) and kilometers per hour (km/h).

The vehicle's odometer works together with the Driver Information Center (DIC). Trip A and Trip B can be set on the odometer. See "Trip Information" under DIC Operation and Displays .

The vehicle does not have to be running to check the odometer mileage. Simply open the driver's door and the mileage briefly displays.

If the vehicle ever needs a new odometer installed, the new one will be set to the correct total mileage of the old odometer.