Oil Life Index Reset
WARNING: This page is about a different car, the 2002 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition on. Press TRIP button on Driver's Information Center (DIC) until OIL LIFE REMAINING message appears. Press and hold RESET button on DIC for at least 2 seconds. Oil life remaining will reset to 100 percent. Turn ignition off.