Had the Instrument Cluster out to fix the odometer. Highly recommend Jeff at www.odometergears.com.

While it was out I replaced all the light bulbs. Now the O2 sensor light is on constantly. Confused by reading the Maint CD. One paragraph says to remove the O2 light after the 120,000 check, another says to push a reset button, but doesn't give a location. If the answer is to remove the light, how do you know when to change the O2 sensor?