Maintenance Indicator Reset

GM Oil Life System Resetting

When to Change Engine Oil

The vehicle has 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 will come on. Change oil as soon as possible within the next 1 000 km (600 miles). It is possible that, if you are driving under the best conditions, the oil life system may 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.


If the system is ever reset accidentally, you must change the oil at 5 000 km (3,000 miles) since the last oil change. Reset the oil life system whenever the oil is changed.


How to Reset the Engine Oil Life System

The Engine Oil Life System calculates when to change the engine oil and filter based on vehicle use. Whenever the oil is changed, reset the system so it can calculate when the next oil change is required. If a situation occurs where you change the oil prior to a CHANGE OIL SOON message being turned on, reset the system.


After changing the engine oil and filter, the system must be reset. To reset the oil life system:

1. Turn the ignition key to ON/RUN with the engine off.
2. Fully press and release the accelerator pedal 3 times within 5 seconds.
If the message is not displayed, the system is reset.


If the CHANGE OIL SOON message comes back on when you start your vehicle, the engine oil life system has not reset. Repeat the procedure.