To reset the 2016 Buick oil life display %, please follow these instructions:
1. Turn the ignition to run (one position before starting engine). 2. Use the UP/DOWN arrow buttons on the right side of the steering wheel to display the OIL LIFE display. 3. Press and hold the SET/RESET (check mark) button until 100% is displayed. 4. Turn the ignition off and start the engine to verify the indicator has been reset.