Oil Change Reminder Lamp: Testing and Inspection

GM Oil Life System Resetting

When the system has calculated that oil life has been diminished, it will indicate that an oil change is necessary. A SERVICE ENGINE OIL message comes on. Change the engine oil as soon as possible within the next 600 miles (1 000 km). It is possible that, if driving under the best conditions, the oil life system may not indicate that an oil change is necessary for up to a year. 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, change the engine oil at 3,000 miles (5 000 km) since last oil change.

How to Reset the Engine Oil Life System

Reset the system whenever the engine oil is changed so that the system can calculate the next engine oil change. To reset the system:

1. Turn the ignition key to ON/RUN with the engine off.

2. Fully press and release the accelerator pedal slowly three times within five seconds.

3. Turn the ignition key to LOCK/OFF.

The system can also be reset by pressing the DIC enter button when the trip page is displayed.

If the SERVICE ENGINE OIL message comes back on when the vehicle is started, the engine oil life system has not been reset. Repeat the procedure.