Hummer 2005 H2 - Manual (Page 201)

Setting the Time
The radio may have a button marked with an H or HR
to represent hours and an M or MN to represent
minutes.
Press and hold the hour button until the correct hour
appears on the display. Press and hold the minute
button until the correct minute appears on the display.
The time can be set with the ignition on or off.
To synchronize the time with an FM station broadcasting
Radio Data System (RDS) information, press and hold
the hour and minute buttons at the same time until RDS
TIME appears on the display. To accept this time, press
and hold the hour and minute buttons, at the same time,
for another two seconds. If the time is not available from
the station, NO UPDAT will appear on the display.
RDS time is broadcast once a minute. After tuning to an
RDS broadcast station, it may take a few minutes for
the time to update.
Radio with Cassette and CD
Radio Data System (RDS)
The audio system has a Radio Data System (RDS).
RDS features are available for use only on FM stations
that broadcast RDS information.
With RDS, the radio can do the following:
• Seek to stations broadcasting the selected type of
programming
• Receive announcements concerning local and
national emergencies
• Display messages from radio stations
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