How do you reset the service engine soon light in a 2001 Pontiac Montana?

To reset the "Service Engine Soon" light in a 2001 Pontiac Montana, you can use an OBD-II scanner to clear the diagnostic trouble codes. Alternatively, you can disconnect the negative battery terminal for about 15 minutes, then reconnect it. This may reset the light, but ensure that any underlying issues are addressed to prevent it from coming back on. Always consult your vehicle’s manual for specific instructions related to your model.