GMC 2006 Sierra - Manual (Page 308)

PROG (Program): Press this button to play a station
you have programmed on the radio preset pushbuttons.
The radio will only seek preset stations with a strong
signal that are in the selected band.
When a cassette tape is playing, press this button to
play the other side of the tape.
When a CD is playing in the CD changer, press this
button to go to the next available CD, if multiple CDs
are loaded.
Q
SOURCE
R
: Press this button to switch between
FM1, FM2, AM, or XM1 or XM2 (if equipped), or a
cassette tape or CD. The cassette or CD must be
loaded to play. Available loaded sources are shown
on the display as a tape or a CD symbol.
Q
SEEK
R
: Press the up or the down arrow to go to
the next or to the previous radio station and stay there.
The radio will only seek stations with a strong signal that
are in the selected band.
When a cassette tape or CD is playing, press the up or
the down arrow to fast forward or reverse.
Q
VOL
R
(Volume): Press the up or the down arrow
to increase or to decrease the volume.
Radio Reception
You may experience frequency interference and static
during normal radio reception if items such as cellphone
chargers, vehicle convenience accessories, and external
electronic devices are plugged into the accessory power
outlet. If there is interference or static, unplug the item
from the accessory power outlet.
AM
The range for most AM stations is greater than for FM,
especially at night. The longer range can cause station
frequencies to interfere with each other. For better radio
reception, most AM radio stations will boost the power
levels during the day, and then reduce these levels during
the night. Static can also occur when things like storms
and power lines interfere with radio reception. When this
happens, try reducing the treble on your radio.
FM Stereo
FM stereo will give the best sound, but FM signals will
reach only about 10 to 40 miles (16 to 65 km). Tall
buildings or hills can interfere with FM signals, causing
the sound to fade in and out.
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