Owner Checks and Services on page 6-8 tells you whatshould be checked, when to check it and what you caneasily do to help keep your vehicle in good condition.The proper replacement parts, fluids and lubricants touse are listed in Recommended Fluids and Lubricantson page 6-11 and Normal Maintenance ReplacementParts on page 6-13. 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,if you are driving under the best conditions, the engineoil life system may not indicate that vehicle serviceis necessary for over a year. However, your engineoil and filter must be changed at least once ayear and at this time the system must be reset.Your GM Goodwrench dealer has GM-trained servicetechnicians who will perform this work using genuineGM 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 5-20 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 IIand 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 monthssince vehicle was purchased or Maintenance IIwas performed.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
