The proper replacement parts, fluids, and lubricants touse are listed in Recommended Fluids and Lubricantson page 6-12 and Normal Maintenance ReplacementParts on page 6-14. When your vehicle is serviced,make sure these are used. All parts should be replacedand all necessary repairs done before you or anyoneelse drives the vehicle. We recommend the use ofgenuine GM parts.Scheduled MaintenanceWhen the CHANGE ENGINE OIL message comes on,it means that service is required for your vehicle.Have your vehicle serviced as soon as possible withinthe next 600 miles (1 000 km). It is possible that, ifyou are driving under the best conditions, the engine oillife system may not indicate that vehicle service isnecessary for over a year. However, your engine oiland filter must be changed at least once a yearand at this time the system must be reset.Your GM Goodwrench® dealer has GM-trainedservice technicians who will perform this work usinggenuine GM parts and reset the system.If the engine oil life system is ever reset accidentally,you must service your vehicle within 3,000 miles(5 000 km) since your last service. Remember to resetthe oil life system whenever the oil is changed. SeeEngine Oil Life System on page 5-22 for information onthe Engine Oil Life System and resetting the system.When the CHANGE ENGINE OIL message appears,certain services, checks, and inspections are required.Required services are described in the following for“Maintenance I” and “Maintenance II.” Generally,it is recommended that your first service beMaintenance I, your second service be Maintenance II,and that you alternate Maintenance I and Maintenance IIthereafter. However, in some cases, Maintenance IImay be required more often.Maintenance I — Use Maintenance I if the CHANGEENGINE OIL message comes on within 10 months sincethe vehicle was purchased or Maintenance II wasperformed.Maintenance II — Use Maintenance II if the previousservice performed was Maintenance I. Always useMaintenance II whenever the message comes on10 months or more since the last service or if themessage has not come on at all for one year.6-4
