2009 Hummer H3T Alpha Owner's Manual - Page 252

5-16 Service and Appearance Care How to Reset the Engine Oil Life System The Engine Oil Life System calculates when to change the 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 message being turned on, reset the system. To reset the Engine Oil Life system: 1. With the engine off, turn the ignition to ON/RUN. 2. Press and release the stem in the lower center of the instrument cluster until the OIL LIFE message is displayed. 3. Once the alternating OIL LIFE and RESET messages appear, press and hold the stem until several beeps sound. This confirms that the oil life system has been reset. 4. Turn the key to LOCK/OFF. If the CHANGE OIL message comes back on when the vehicle is started, the engine oil life system has not reset. Repeat the procedure. See DIC Warnings and Messages on page 3-37. When the system has calculated that oil life has been diminished, it indicates that an oil change is necessary. A CHANGE OIL message comes on. See DIC Warnings and Messages on page 3-37. 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 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. What to Do with Used Oil Used engine oil contains certain elements that can be unhealthy for your skin and could even cause cancer. Do not let used oil stay on your skin for very long. Clean your skin and nails with soap and water, or a good hand cleaner. Wash or properly dispose of clothing or rags containing used engine oil. See the manufacturer's warnings about the use and disposal of oil products. Used oil can be a threat to the environment. If you change your own oil, be sure to drain all the oil from the filter before disposal. Never dispose of oil by putting it in the trash, pouring it on the ground, into sewers, or into streams or bodies of water. Recycle it by taking it to a place that collects used oil.