2003 Chevrolet Tahoe Owner's Manual - Page 375

How to Reset the CHANGE ENGINE OIL Message The GM Oil Life SystemTMcalculates when to change your engine oil and filter based on vehicle use. Anytime your oil is changed, reset the system so it can calculate when the next oil change is required. If a situation occurs where you can change your oil prior to a CHANGE ENGINE OIL message being turned on, reset the system. To reset the CHANGE ENGINE OIL message do the following: What to Do with Used Oil Used engine oil contains certain elements that may be unhealthy for your skin and could even cause cancer. Don't 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. Instead, recycle it by taking it to a place that collects used oil. If you have a problem properly disposing of your used oil, ask your dealer, a service station or a local recycling center for help. 1. Turn the ignition key to RUN with the engine off. 2. Fully press and release the accelerator pedal three times within five seconds. If the CHANGE ENGINE OIL message flashes for five seconds, the system is reset. Engine Air CleanedFilter The air cleaner/filter assembly has an indicator, if equipped, that lets you know when the engine air cleanedfilter is dirty and needs to be serviced. The air cleaner/filter indicator is located on the air cleaner cover. See Engine Compartment Overview on page 5-14 for more information on location. 5-22