How do you reset trip odometer on 2009 Buick Lacrosse?

To reset the trip odometer on a 2009 Buick Lacrosse, locate the trip odometer button on the instrument cluster. Press and hold the button until the trip odometer resets to zero. If your model has a digital display, you may need to toggle through the options using the button until you reach the trip odometer. Release the button once it's reset.