2005 Buick LeSabre Owner's Manual - Page 345

Footnotes † The U.S. Environmental Protection Agency or the California Air Resources Board has determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of the vehicle's useful life. We, however, urge that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded. * If your vehicle has the GM Oil Life System, a computer system lets you know when to change the oil and filter. This is based on engine revolutions and engine temperature, and not on mileage. Based on driving conditions, the mileage at which an oil change will be indicated can vary considerably. For the oil life system to work properly, you must reset the system every time the oil is changed. When the system has calculated that oil life has been diminished, it will indicate that an oil change is necessary. A CHANGE ENGINE OIL SOON message will come on. Change your oil as soon as possible within the next two times you stop for fuel. See Engine Oil on page 5-13. It is possible that, if you are driving under the best conditions, the oil life system may not indicate that an oil change is necessary for over a year. However, your engine oil and filter must be changed at least once a year and at this time the system must be reset. It is also important to check your oil regularly and keep it at the proper level. If the system is ever reset accidentally, you must change your oil at 3,000 miles (5 000 km) since your last oil change. Remember to reset the oil life system whenever the oil is changed. See Engine Oil Life System on page 5-17 for information on resetting the system. @ Whenever the tires are rotated, the Check Tire Pressure System (if equipped) must be reset. + A good time to check your brakes is during tire rotation. See Brake System Inspection on page 6-23. 3,000 Miles (5 000 km) ❑ Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. (See footnote *.) 6,000 Miles (10 000 km) ❑ Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. (See footnote *.) ❑ Rotate tires. See Tire Inspection and Rotation on page 5-63 for proper rotation pattern and additional information. (See footnote @.) (See footnote +.) 6-7