For 1990-2009 cars

## Scheduled Maintenance EOL Standard - Except Cadillacs

When the change engine oil light/message comes on, it means that service is required for your vehicle. See "Engine Oil Life System" in your owner manual. Have your vehicle serviced as soon as possible within the next 600 miles (1 000 km). It is possible that, if you are driving under the best conditions, the engine oil life system may not indicate that vehicle service 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. 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, you must service your vehicle within 3,000 miles (5 000 km) since your last service. Remember to reset the oil life system whenever the oil is changed. See "Engine Oil Life System" in your owner manual for information on the Engine Oil Life System and resetting the system.

When the change engine oil light/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 be Maintenance I, your second service be Maintenance II, and that you alternate Maintenance I and Maintenance II thereafter. However, in some cases, Maintenance II may be required more often.

#### Maintenance I

Use Maintenance I if the change engine oil message comes on within 10 months since the vehicle was purchased or Maintenance II was performed.

#### Maintenance II

Use Maintenance II if the previous service performed was Maintenance I. Always use Maintenance II whenever the message comes on 10 months or more since the last service or if the message has not come on at all for one year.

#### Scheduled Maintenance

Service | Maintenance I | Maintenance II
--- | --- | ---
Change engine oil and filter. See Recommended Fluids and Lubricants . Reset oil life system. See "Engine Oil Life System" in your owner manual. 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" in your owner manual. See footnote (m). |  | ·
Rotate tires (except Corvette) and check tire inflation pressures and wear. See "Tires" in your owner manual. | · | ·
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 . | · | ·
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). |  | ·
Grand Prix, LaCrosse, 3.9L Malibu, 3.6L Lucerne, and 3.6L and 3.9L G6: Check automatic transmission fluid level and add fluid as needed. |  | ·
Cobalt, Impala, Malibu, LaCrosse, G5, G6, and Grand Prix: Inspect throttle system. See footnote (j). |  | ·
Replace passenger compartment air filter (if equipped). See footnote (g). |  | ·

## Scheduled Maintenance Aveo

### Short Trip/City Scheduled Maintenance

Follow the Short Trip/City Scheduled Maintenance if any one of these conditions is true for your vehicle:

• | Most trips are less than 5 miles (8 km). This is particularly important when outside temperatures are below freezing.

• | Most trips include extensive idling, such as frequent driving in stop-and-go traffic.

• | If the vehicle is used for delivery service, police, taxi, or other commercial application.

One of the reasons you should follow this schedule if you operate your vehicle under any of these conditions is that these conditions cause engine oil to break down sooner.

See Maintenance Footnotes , Owner Checks and Services , and Recommended Fluids and Lubricants .

Short Trip/City Scheduled Maintenance Services
Maintenance Interval | Service
--- | ---
Every 3,000 mi (5 000 km) |

• | Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service.

Every 6,000 mi (10 000 km) |

• | Rotate tires and check inflation pressures and wear. See "Tire Inspection and Rotation" in your owner manual.

• | Inspect brake system. See footnote (a).

Every 15,000 mi (25 000 km) |

• | Inspect engine air cleaner filter. If necessary, replace filter. See "Engine Air Cleaner/Filter" in your owner manual. See footnote (m).

• | Replace passenger compartment air filter. See footnote (g).

• | Inspect drive belt(s).

Every 30,000 mi (50 000 km) |

• | Replace engine air cleaner filter. See "Engine Air Cleaner/Filter" in your owner manual.

• | Replace spark plugs. An Emission Control Service.

• | Inspect timing belt.

• | Inspect EVAP canister, vapor lines, and EVAP vent solenoid valve. An Emission Control Service. See footnote †.

• | Inspect PCV system. An Emission Control Service. See footnote †.

Every 37,500 mi (60 000 km) |

• | Change automatic transmission fluid (severe service only). See footnote (q).

Every 42,000 mi (70 000 km) |

• | Replace engine oil pan drain plug washer.

Every 60,000 mi (100 000 km) |

• | Replace EVAP vent solenoid valve.

• | Replace spark plug wires. An Emission Control Service.

• | Replace timing belt.

Every 90,000 mi (150 000 km) |

• | Replace fuel filter. An Emission Control Service. See footnote †.

Every 150,000 mi (240 000 km) |

• | Engine cooling system service. An Emission Control Service. See footnote (i).

### Long Trip/Highway Scheduled Maintenance

Follow this scheduled maintenance only if none of the conditions from the Short Trip/City Scheduled Maintenance are true. Do not use this schedule if the vehicle is driven in a dusty area or used off paved roads. Use the Short Trip/City schedule for these conditions.

Driving a vehicle with a fully warmed engine under highway conditions will cause engine oil to break down slower.

See Maintenance Footnotes , Owner Checks and Services , and Recommended Fluids and Lubricants .

Long Trip/Highway Scheduled Maintenance Services
Maintenance Interval | Service
--- | ---
Every 7,500 mi (12 500 km) |

• | Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service.

• | Rotate tires and check inflation pressures and wear. See "Tire Inspection and Rotation" in your owner manual.

• | Inspect brake system. See footnote (a).

Every 15,000 mi (25 000 km) |

• | Inspect engine air cleaner filter. If necessary, replace filter. See "Engine Air Cleaner/Filter" in your owner manual. See footnote (m).

• | Replace passenger compartment air filter. See footnote (g).

• | Inspect drive belt(s).

Every 30,000 mi (50 000 km) |

• | Replace engine air cleaner filter. See "Engine Air Cleaner/Filter" in your owner manual.

• | Replace spark plugs. An Emission Control Service.

• | Inspect timing belt.

• | Inspect EVAP canister, vapor lines, and EVAP vent solenoid valve. An Emission Control Service. See footnote †.

• | Inspect PCV system. An Emission Control Service. See footnote †.

Every 37,500 mi (60 000 km) |

• | Change automatic transmission fluid (severe service only). See footnote (q).

Every 60,000 mi (100 000 km) |

• | Replace EVAP vent solenoid valve.

• | Replace spark plug wires. An Emission Control Service.

• | Replace timing belt.

Every 90,000 mi (150 000 km) |

• | Replace fuel filter. An Emission Control Service. See footnote †.

• | Replace engine oil pan drain plug washer.

Every 150,000 mi (240 000 km) |

• | Engine cooling system service. An Emission Control Service. See footnote (i).

## Scheduled Maintenance Cadillac Models

To maintain the ride, handling, and performance of your 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" in your owner manual. If tire rotation is recommended for your vehicle, rotate tires. See "Tire Inspection and Rotation" in your owner manual and At Least Once a Month .

When the change engine oil light/message comes on, it means that service is required for your vehicle. See "Engine Oil Life System" in your owner manual. Have your vehicle serviced as soon as possible within the next 600 miles (1 000 km). It is possible that, if you are 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, you must service your vehicle within 3,000 miles (5 000 km) since your last service. Remember to reset the oil life system whenever the oil is changed. See "Engine Oil Life System" in your owner manual for information on the Engine Oil Life System and resetting the system.

When the change engine oil light/message appears, the following services, checks, and inspections are required:

• | Change engine oil and filter. See "Engine Oil" in your owner manual. Reset oil life system. See "Engine Oil Life System" in your owner manual. 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" in your owner manual. See footnote (m).

• | Check tires for inflation pressures and wear. See "Tires" in your owner manual. If tire rotation is recommended for your vehicle, rotate tires. See "Tire Inspection and Rotation" in your owner manual and At Least Once a Month .

• | Inspect brake system. See footnote (a).

• | Check engine coolant and windshield washer fluid levels. If you have the 4.4L V8 supercharged engine, check intercooler fluid level. 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).

• | SRX: Lubricate chassis components. See footnote #.

• | DTS: Check transmission fluid level and add fluid as needed.

## Scheduled Maintenance Vibe

See Maintenance Footnotes , Owner Checks and Services , and Recommended Fluids and Lubricants .

Scheduled Maintenance Services
Maintenance Interval | Service
--- | ---
Every 5,000 mi (8 000 km) |

• | Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service.

• | Rotate tires and check inflation pressures and wear. See "Tires" in your owner manual.

• | Inspect engine air cleaner filter if you are driving in dusty conditions. If necessary, replace filter. See "Engine Air Cleaner/Filter" in your owner manual. An Emission Control Service.

Every 15,000 mi (24 000 km) |

• | Inspect passenger compartment air filter.

Every 30,000 mi (48 000 km) |

• | Replace engine air cleaner filter (or every 24 months, whichever occurs first). An Emission Control Service.

• | Replace passenger compartment air filter.

• | Inspect fuel tank, cap, cap gasket, and lines for damage or leaks (or every 24 months, whichever occurs first). Replace parts as needed. An Emission Control Service. See footnote †.

• | Change manual transmission fluid only if your vehicle is used to tow a trailer.

Every 60,000 mi (96 000 km) |

• | Inspect engine accessory drive belts (or every 48 months, whichever occurs first) and then every 15,000 miles (24 000 km) thereafter. An Emission Control Service. See footnote (l).

• | Inspect for tappet noise and engine vibration. Adjust valve clearance to factory specifications, if necessary (or every 48 months, whichever occurs first). An Emission Control Service.

• | Change automatic transmission fluid (severe service only). See footnote (h).

Every 120,000 mi (192 000 km) |

• | Replace spark plugs. An Emission Control Service.

Every 150,000 mi (240 000 km) |

• | Engine cooling system service (or every 5 years, whichever occurs first). An Emission Control Service. See footnote (i).

## Scheduled Maintenance Solstice

If your vehicle has a Driver Information Center (DIC), it also has the Engine Oil Life System, a computer system that lets you know when to change the engine 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 OIL SOON message on the Driver Information Center (DIC) will come on. See "DIC Warnings and Messages" in your owner manual. Change the oil as soon as possible within the next two times you stop for fuel. See "Engine Oil" in your owner manual. It is possible that, if you are driving under the best conditions, the oil life system might not indicate that an oil change 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. It is also important to check the oil regularly and keep it at the proper level.

If the system is ever reset accidentally, you must change the 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" in your owner manual for information on resetting the system.

See Maintenance Footnotes , Owner Checks and Services , and Recommended Fluids and Lubricants .

Scheduled Maintenance Services
Maintenance Interval | Service
--- | ---
Every 5,000 mi (8 000 km) |

• | Vehicles with Driver Information Center (DIC): The Engine Oil Life System will tell you when to change the engine oil and filter. See "Engine Oil Life System" in your owner manual. An Emission Control Service.

• | Vehicles without Driver Information Center (DIC): Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service.

• | Rotate tires and check inflation pressures and wear. See "Tires" in your owner manual.

Every 15,000 mi (24 000 km) |

• | Inspect engine air cleaner filter. If necessary, replace filter. If you are driving in dusty/dirty conditions, inspect the filter at every engine oil change. See "Engine Air Cleaner/Filter" in your owner manual. An Emission Control Service.

Every 50,000 mi (80 000 km) |

• | Replace engine air cleaner filter. See "Engine Air Cleaner/Filter" in your owner manual. An Emission Control Service.

• | Change automatic transmission fluid (severe service). See footnote (h).

Every 100,000 mi (160 000 km) |

• | Replace spark plugs. An Emission Control Service.

• | Change automatic transmission fluid (normal service).

Every 150,000 mi (240 000 km) |

• | Engine cooling system service (or every 5 years, whichever occurs first). An Emission Control Service. See footnote (i).

• | Inspect engine accessory drive belt. Visually inspect belt for fraying, excessive cracks, or obvious damage. Replace belt if necessary. An Emission Control Service.