To reset the 2015 Buick Enclave oil light, please follow these instructions:
1. Turn the ignition to run (one position before starting engine). 2. Press the vehicle information button (i) until OIL LIFE REMAINING displays. 3. Press and hold the SET/RESET (check mark) button until 100% is displayed. You will hear 3 chimes and the CHANGE ENGINE OIL SOON message will go off. 4. Start the engine and verify CHANGE OIL SOON light goes out (if this does not happen, turn off the engine and repeat steps).