To reset the 2017 GMC Terrain remaining oil life % after an oil change service, please follow these instructions:

1. Turn the ignition to run (one position before starting engine).
2. Press the MENU button to display the Vehicle Information menu.
3. Press either the up or down arrows to view REMAINING OIL LIFE.
4. Press the SET/CLR button until 100% is displayed.
5. Turn the ignition off and then start the engine to verify the indicator has been reset.

or

1. Turn the ignition to run (one position before starting engine).
2. Immediately after Step 1 press and release the gas pedal 3 times within 5 seconds.
3. If the Change Engine Oil Soon message goes off the system is reset.
4. Turn the ignition off and then start the engine to verify the indicator has been reset.