CTS V6-2.8L (2006)
Oil Change Reminder Lamp: Service and Repair
GM Oil Life System
ENGINE OIL LIFE SYSTEM
WHEN TO CHANGE ENGINE OIL
Your 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 ENGINE OIL" message
in the Driver Information Center (DIC) will come on. Change your oil 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 oil life system may not indicate that an oil change 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. It is also important to check your oil regularly and keep it at
the proper level.
If the system is ever reset accidentally, you must change your 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.
HOW TO RESET THE ENGINE OIL LIFE SYSTEM AND THE OIL LIFE INDICATOR
The Engine Oil Life System calculates when to change your engine oil and filter based on vehicle use. Anytime your oil is changed, reset the system so
it can calculate when the next oil change is required. If a situation occurs where you change your oil prior to a "CHANGE ENGINE OIL" message in
the DIC being turned on, reset the system.
After the oil has been changed, the "CHANGE ENGINE OIL" message and the oil life indicator must be reset. To reset the message and indicator, use
one of the following procedures:
BASE AUDIO SYSTEM
Press the "CLR" button located to the right of the DIC display to acknowledge the "CHANGE ENGINE OIL" message. This will clear the message
from the display and reset it.
To reset the oil life indicator, use the following steps:
1. Press the "up" or "down" arrow on the "INFO" button located to the right of the DIC display to access the DIC menu.
2. Once XXX% "ENGINE OIL LIFE" menu item is highlighted, press and hold the "CLR" button. The percentage will return to "100", and the oil
life indicator will be reset. Repeat the steps if the percentage does not return to 100.
3. Turn the key to "OFF".
If the "CHANGE ENGINE OIL" message comes back on when you start your vehicle, the engine oil life system has not reset. Repeat the procedure.
NAVIGATION SYSTEM
If you select this item, the percentage of remaining oil life is displayed. If you see 99% Oil Life on the display, that means that 99% of the current oil
life remains.
When the oil life is depleted, the "CHANGE ENGINE OIL" message will appear on the display. In addition to the Engine Oil Life System monitoring
the oil life, additional maintenance is recommended in the Maintenance Schedule.
When you reset the "CHANGE ENGINE OIL" message by clearing it from the display, you still must reset the engine oil life monitor separately.
To reset the oil life indicator, use the following steps:
1. Turn the system on by pressing the "PWR/VOL" knob once. The "PWR/VOL" knob is located to the lower left of the DIC display.
2. Press the "INFO" button located to the left of the display to access the Vehicle Info (Information) menu.
3. Turn the "TUNE/SEL" knob located to the lower right of the display until "Engine Oil Life" is highlighted. Press the knob once to select it.
4. Once "XXX% Engine Oil Life" is displayed, press the multi-function button next to the Reset prompt in the upper right corner of the display. The
percentage will return to 100, and the oil life indicator will be reset. Repeat the steps if the percentage does not return to 100.
5. Turn the key to "OFF".
If the change engine oil message comes back on when you start your vehicle, the engine oil life system has not reset. Repeat the procedure.
WHAT TO DO WITH USED OIL
Used engine oil contains certain elements that may be unhealthy for your skin and could even cause cancer. Do not let used oil stay on your skin for
very long. Clean your skin and nails with soap and water, or a good hand cleaner. Wash or properly dispose of clothing or rags containing used engine
oil. See the manufacturer's warnings about the use and disposal of oil products.
