GMC Terrain: Vehicle Checks / Engine Oil Life System

When to Change Engine Oil

This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and miles driven. Based on driving conditions, the mileage at which an oil change is 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 indicates that an oil change is necessary. A CHANGE ENGINE OIL SOON message comes on. Change the oil as soon as possible within the next 1 000 km (600 mi). It is possible that, if driving under the best conditions, the oil life system may indicate that an oil change is not 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. Your dealer has trained service people who will perform this work and reset the system. It is also important to check the oil regularly over the course of an oil drain interval and keep it at the proper level.

If the system is ever reset accidentally, the oil must be changed at 5 000 km (3,000 mi) since the last oil change. Remember to reset the oil life system whenever the oil is changed.

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. Display REMAINING OIL LIFE on the DIC menu. See Driver Information Center (DIC) (Base and Midlevel) or Driver Information Center (DIC) (Uplevel).
2. Press and hold V for several seconds while the Oil Life display is active to reset the Oil Life system.
3. REMAINING OIL LIFE 100% will be displayed when the oil life system is successfully reset.

The oil life system can also be reset as follows:

1. Place the ignition in Service Mode. See Ignition Positions.

   Display REMAINING OIL LIFE on the DIC menu.

2. See Driver Information Center (DIC) (Base and Midlevel) or Driver Information Center (DIC) (Uplevel).
3. Fully press and release the accelerator pedal three times within five seconds.
4. If the display changes to 100%, the system is reset.

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