1998 Oldsmobile Silhouette Owner's Manual - Page 187

Speedometer and Tamper Resistant Odometer Your speedometer lets you see your speed in both miles per hour (mph) and kilometers perhour (km/h). Your odometer shows how far your vehicle has been driven, in either miles (used in the United States) orkilometers (used in Canada). Your vehicle hasa tamper-resistant odometer. If you see silver linesbetween the numbers, you'll know that someone has probably tried to turn it back, so the numbers may not be true. You may wonder what happens if your vehicle needs a new odometer installed. If the new one can be set to the mileage total of the old odometer, then that will be done. If it can't, then it's set at zero and a label must be put on the driver's door to show the old mileage reading when the new odometer was installed. 0 The tripodometer can tell you how far your vehicle has been driven since you last set it to zero. To set it to zero, push the resetbutton which is located above and to the right of the temperature gage. 2-85