How do you set the clock in a Buick Lucerne CX?

To set the clock in a Buick Lucerne CX, turn the ignition to the "On" position without starting the engine. Press the "Menu" button on the dashboard, then navigate to the "Settings" option using the knob. Select "Clock" and use the knob to adjust the hours and minutes. Finally, press the "Menu" button again to save your settings.