How do you set the clock on your 2001 Chevrolet Express van?

To set the clock on your 2001 Chevrolet Express van, first turn on the ignition without starting the engine. Next, press and hold the "HR" button to set the hour and the "MIN" button to set the minutes. Adjust the time as needed, and once you're finished, the clock will automatically save the settings after a few seconds. If your van has a digital display, you may need to press the "Clock" button to enter the setting mode before adjusting.