GMC 2009 Sierra - 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.
• 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
s REV (reverse) button. You can also turn
the
f
knob, located on the upper right side of
the radio, to adjust the selected setting.
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.
3-77