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GM Oil Life System Resetting
The vehicle has a computer system that has a change engine oil light, indicating 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, the system must be reset 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. The change engine oil light will come on. The oil must be changed as soon as possible. It is possible that, if the vehicle is driven 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, the oil must be changed at 3,000 miles (5 000 km) since the last oil change. Remember to reset the oil life system whenever the oil and filter is changed.
With the Driver Information Center (DIC)
Press the fuel information button until Engine Oil Life appears on the screen.
Press and hold the select button for five seconds.
OIL LIFE RESET will appear on the screen for 10 seconds.
The oil life system is reset.
Without the Driver Information Center (DIC)
Turn the ignition key to RUN with the engine off.
Fully press and release the accelerator pedal slowly three times within five seconds. If the OIL LIFE RESET message flashes for 10 seconds, the system is resetting.
Turn the key to LOCK.
If the CHANGE ENGINE OIL message comes back on when vehicle is turned on, the ENGINE OIL LIFE system has not reset. Repeat the procedure.