How do you set the clock in a 2006 Chevy Silverado?

To set the clock in a 2006 Chevy Silverado, first, turn the ignition to the "On" or "Run" position without starting the engine. Then, press and hold the "HR" (hour) button until the hour digit begins to flash, and use the "HR" button to adjust the hour. Next, press the "MIN" (minute) button until the minute digit flashes, and use the "MIN" button to set the minutes. Once set, the clock will automatically save the changes when you stop pressing the buttons.