GM Service Manual Online
For 1990-2009 cars only

The speedometer shows the speed in either miles per hour (mph) or kilometers per hour (km/h). For more information see "Personal Options" under DIC Vehicle Personalization .

To read the odometer with the ignition off, turn on the parking lamps.

If the vehicle needs a new odometer installed, the mileage total of the new odometer will be set to the original miles (kilometers) of the old odometer. See your dealer/retailer if the odometer must be replaced in the vehicle.