Scheduled MaintenanceThe services shown in this schedule up to100,000 miles (166 000 km) should be repeated after100,000 miles (166 000 km) at the same intervals for thelife of this vehicle. The services shown at 150,000 miles(240 000 km) should be repeated at the same intervalafter 150,000 miles (240 000 km) for the life of thisvehicle.SeePart B: Owner Checks and Services on page 6-11andPart C: Periodic Maintenance Inspections onpage 6-16.Footnotes†The U.S. Environmental Protection Agency or theCalifornia Air Resources Board has determined that thefailure to perform this maintenance item will not nullifythe emission warranty or limit recall liability prior tothe completion of the vehicle ’s useful life. We, however,urge that all recommended maintenance services beperformed at the indicated intervals and themaintenance be recorded.+A good time to check your brakes is during tirerotation. See Brake System Inspection on page 6-17.Engine Oil and Chassis LubricationScheduled MaintenanceChange engine oil and filter as indicated by the GMOil Life System (or every 12 months, whicheveroccurs first). Reset the system.Your vehicle has a computer system that lets you knowwhen to change the engine oil and filter. This is based onengine revolutions and engine temperature, and not onmileage. Based on driving conditions, the mileage atwhich an oil change will be indicated can varyconsiderably. For the oil life system to work properly, youmust reset the system every time the oil is changed.When the system has calculated that oil life has beendiminished, it will indicate that an oil change isnecessary. A CHANGE ENGINE OIL message willcome on. Change your oil as soon as possible withinthe next two times you stop for fuel. It is possible that, ifyou are driving under the best conditions, the oil lifesystem may not indicate that an oil change is necessaryfor over a year. However, your engine oil and filtermust be changed at least once a year and at this timethe system must be reset. Your dealer has GM-trainedservice people who will perform this work usinggenuine GM parts and reset the system.6-5
