GM Service Manual Online
For 1990-2009 cars only

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

The odometer shows how far the vehicle has been driven, in either miles (used in the United States) or kilometers (used in Canada).

The odometer mileage can be checked without the vehicle running. Press the trip stem located on the instrument panel cluster.

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