2010 Chevrolet Cobalt Owner's Manual - Page 294

When the system has calculated that oil life has been diminished, it indicates that an oil change is necessary. A CHANGE OIL SOON message comes on. See DIC Warnings and Messages on page 4‑40. Change the oil as soon as possible within the next 600 miles (1 000 km). It is possible that, if driving under the best conditions, the oil life system might not indicate that an oil change is necessary for over a year. However, the engine oil and filter must be changed at least once a year and at this time the system must be reset. Your dealer/retailer has trained service people who will perform this work using genuine parts and reset the system. It is also important to check the oil regularly and keep it at the proper level. If the system is ever reset accidentally, the oil must be changed at 3,000 miles (5 000 km) since the last oil change. Remember to reset the oil life system whenever the oil is changed. How to Reset the Engine Oil Life System The Engine Oil Life System calculates when to change your engine oil and filter based on vehicle use. Whenever the oil is changed, reset the system so it can calculate when the next oil change is required. If a situation occurs where the oil is changed prior to a CHANGE OIL SOON message being turned on, reset the system. After changing the engine oil, the system must be reset: 1. Turn the ignition to ON/RUN, with the engine off. 2. Press the information and reset buttons on the Driver Information Center (DIC) at the same time to enter the personalization menu. See DIC Vehicle Personalization on page 4‑46. 3. Press the information button to scroll through the available personalization menu modes until the DIC display shows OIL-LIFE RESET. 6-22