How to Set a GMC Clock
- 1). Locate the "Clock" button on the audio systems panel in your GMC vehicle. Press the button to cause the time and date to appear on the display screen.
- 2). Press the button directly below the hours digits repeatedly to adjust the hours one digit at a time. Hold down the button to cause the digits to advance more quickly.
- 3). Press the button underneath the clock's minutes digits to adjust the minutes to the desired time.
- 4). Use the buttons under the clock's date display to set the month, day and year.
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