GM Service Manual Online
For 1990-2009 cars only

The speedometer shows the vehicle's 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). For vehicles with a Trip A and Trip B odometer, it can be set. See "Trip Information" under DIC Operation and Displays .

The odometer mileage can be checked while the vehicle is not running. The mileage briefly displays when the driver's door is opened.

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