2008 GMC Sierra 1500 Pickup Owner's Manual - Page 213

Setting the Clock MP3 Radio with a Single CD and DVD Player If your vehicle has a radio with a single CD and DVD player, it has a H button for setting the time and date. To set the time and date, follow the instructions: 1. Press the H button and the HR, MIN, MM, DD, YYYY (hour, minute, month, day, and year) displays. 2. Press the pushbutton located under any one of the labels that you want to change. Every time the pushbutton is pressed again, the time or the date if selected, increases by one. Changing the Time and Date Default Settings You can change the time default setting from 12 hours to 24 hours or change the date default setting from month/day/year to day/month/year. To change the time or date default settings, follow these instructions: 1. Press the H button and then the pushbutton located under the forward arrow that is currently displayed on the radio screen until the time 12H (hour) and 24H (hour), and the date MM/DD (month and day) and DD/MM (day and month) are displayed. 2. Press the pushbutton located under the desired option. 3. Press the H button again to apply the selected default, or let the screen time out. • Another way to increase the time or date, is to press the right ¨SEEK arrow or the \FWD (forward) button. 3. To decrease, press the left ©SEEK arrow or the sREV (reverse) button. You can also turn the f knob, located on the upper right side of the radio, to adjust the selected setting. 3-77