GM Service Manual Online
For 1990-2009 cars only

When the system has calculated that oil life has been diminished, it will indicate that an oil change is necessary. A CHANGE ENGINE OIL SOON message will come 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 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, change the engine oil at 3,000 miles (5 000 km) since last oil change.

How to Reset the Engine Oil Life System

To reset the oil life indicator, use the following steps:

  1. Press the up and down arrow on the INFO button located to the right of the driver information center (DIC) menu.
  2. Once XXX% ENGINE OIL LIFE menu is highlighted, press and hold the CLR button. The percentage will return to 100, and the oil life indicator will be reset.
  3. Turn the key to OFF.

If the CHANGE ENGINE OIL message comes back on when you start the vehicle or the percentage does not return to 100, the engine oil life system has not reset. Repeat the procedure.

Navigation System

To reset the oil life indicator, use the following steps:

  1. Turn the ignition to ON with the engine running.
  2. Turn the system on by pressing the PWR/VOL knob located to the lower left of the DIC display screen.
  3. Press and hold the vehicle information display button located in the upper right of the screen for 3 seconds to enter the vehicle information menu.
  4. Use the scroll up or down display keys to select Engine Oil Life
  5. Press and hold the RESET button on 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.
  6. Press the RETURN button on the display to return to the main page.
  7. Turn the key to OFF.