2009 Cadillac DTS Owner's Manual - Page 412

Scheduled Maintenance To maintain the ride, handling, and performance of the vehicle, it is important that the first tire rotation service be performed when the vehicle has 5,000 to 8,000 miles (8 000 to 13 000 km). Check tires for inflation pressures and wear. See Tires on page 5-48. Rotate tires. See Tire Inspection and Rotation on page 5-65 and "Tire Wear Inspection" in At Least Once a Month on page 6-9. When the CHANGE ENGINE OIL SOON message displays in the Driver Information Center (DIC), service is required for the vehicle. Have the vehicle serviced as soon as possible within the next 600 miles (1 000 km). It is possible that, if driving under the best conditions, the engine oil life system may not indicate that vehicle service 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 technicians who will perform this work using genuine parts and reset the system. If the engine oil life system is ever reset accidentally, service the vehicle within 3,000 miles (5 000 km) since the last service. Remember to reset the oil life system whenever the oil is changed. See Engine Oil Life System on page 5-16 for information on the Engine Oil Life System and resetting the system. When the CHANGE ENGINE OIL SOON message appears, the following services, checks, and inspections are required: ❑ Change engine oil and filter. See Engine Oil on page 5-13. Reset oil life system. See Engine Oil Life System on page 5-16. An Emission Control Service. ❑ Visually check for any leaks or damage. See footnote (k). ❑ Inspect engine air cleaner filter. If necessary, replace filter. See Engine Air Cleaner/Filter on page 5-17. See footnote (m). ❑ Rotate tires and check inflation pressures and wear. See Tire Inspection and Rotation on page 5-65 and "Tire Wear Inspection" in At Least Once a Month on page 6-9. ❑ Inspect brake system. See footnote (a). ❑ Check engine coolant and windshield washer fluid levels and add fluid as needed. ❑ Perform any needed additional services. See "Additional Required Services" in this section. ❑ Inspect suspension and steering components. See footnote (b). ❑ Inspect engine cooling system. See footnote (c). ❑ Inspect wiper blades. See footnote (d). ❑ Inspect restraint system components. See footnote (e). ❑ Lubricate body components. See footnote (f). ❑ Check transmission fluid level and add fluid as needed. 6-4