GMC 2002 Yukon Denali Owner's Manual page 194

SEEK : While listening to AM, FM1 or FM2,
press the up arrow to tune to the next station and stay
there. Press the down arrow to tune to the previous
station and stay there. The sound will mute while
seeking. If the front radio is in use, you cannot seek
through different stations.
While listening to a cassette tape, press the up arrow to
hear the next selection on the tape. Press the down arrow
to go back to the previous selection. If the cassette tape
on the front radio is in use, you cannot seek through
different selections on a tape.
While listening to a CD, press the up arrow to hear the
next track on the CD. Press the down arrow to go back
to the start of the current track (if more than eight
seconds have played). If the CD player on the front
radio is in use, you cannot seek through different tracks.
To scan preset stations, press and hold SEEK until
the radio goes into scan mode. The radio will go to a
station, play for a few seconds, then go on to the next
station. Press either SEEK arrow again to stop scanning.
If the front radio is in use, you cannot scan through
different stations.
3-18
P.SET PROG (Preset Program): The front passengers
must be listening to something different for each of
these functions to work:
D
Press this button to scan through the preset radio
stations set on the pushbuttons on the main radio.
The radio will go to a preset station, play for a few
seconds, then go on to the next preset station.
Press this button again to stop scanning.
D
When a cassette tape is playing, press this button to
go to the other side of the tape.
D
When a CD is playing in the CD changer, press this
button to select a disc.
CD TAPE: Press this button to switch between playing
a tape and CD changer if both are loaded. Press AM FM
to return to the radio when a cassette tape or CD is
playing. The inactive tape or CD will remain safely
inside the radio for future listening.