Radio(S) - GMC Yukon Owner's Manual

5. To decrease the time or date, do one of the
following:
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Press the SEEK button.
s
Press the REV button.
Turn the knob counterclockwise.
To change the time default setting from 12 hour to
24 hour or to change the date default setting from
month/day/year to day/month/year:
1. Press the button and then the softkey located
below the forward arrow tab. 12H, 24H, the date
MM/DD (month and day), and DD/MM/ (day and
month) displays.
2. Press the softkey located below the desired option.
3. Press the button again to apply the desired
option, or let the screen time out.
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Radio(s)

Radio with CD/MP3 shown, Radio with CD/MP3/USB
similar