How do you change klm to mph on 2001 Oldsmobile silouhette?

To change the speedometer from kilometers per hour (km/h) to miles per hour (mph) on a 2001 Oldsmobile Silhouette, you typically need to adjust the settings on the vehicle's dashboard if it has a digital display. If it doesn't have an option in the settings, you may need to replace the speedometer or the entire instrument cluster with one that displays mph. Consulting the owner's manual or a professional mechanic can provide specific guidance based on your vehicle's features.