How does the "change the oil light" work? If it uses a sensor, where is it locat on 2000 Oldsmobile Silhouette

On my 2000 Olds. Silhouette van, after I start it I get the"change the oil light" on for two minutes and then it goes out every single time. I already change the milage counting to cero and pushed the gas pedal three times as required. Any sudgestions?

Asked by for the 2000 Oldsmobile Silhouette
If you have the owners manual look for procedure.
Tutn key on and push gas pedal to the floor then let off 3 times within 10 seconds. Turn off key, now start engine, reset should be complete.