GMC 2007 Sierra 1500 Pickup Owner's Manual page 323

SCAN: Scan the stations within a PTY by
performing the following:
1. Press the TYPE button to activate program
type select mode. P-TYPE and the last
selected PTY will appear on the display.
2. Turn the TYPE knob or press and release the
TYPE button to select a PTY.
3. Once the desired PTY is displayed, press and
hold either the TYPE or the SCAN arrows for
two seconds, and the radio will begin
scanning the stations in the PTY.
4. Press either the TYPE or the SCAN arrows to
stop scanning.
BAND (Alternate Frequency): Alternate
frequency allows the radio to switch to a stronger
station with the same program type. To turn
alternate frequency on, press and hold BAND for
two seconds. AF (alternate frequency) ON will
appear on the display. The radio may switch
to stations with a stronger frequency.
To turn alternate frequency off, press and hold
BAND again for two seconds. AF OFF will appear
on the display. The radio will not switch to
other stations.
This function does not apply for XM™ Satellite
Radio Service.
Setting Preset PTYs (RDS Only)
These pushbuttons have factory PTY presets. Up
to 12 PTYs (six FM1 and six FM2), can be
programmed on the six numbered pushbuttons, by
performing the following steps:
1. Press BAND to select FM1 or FM2.
2. Press the TYPE button to activate program
type select mode. P-TYPE and the last
selected PTY will appear on the display.
3. Turn the TYPE knob or press and release the
TYPE button to select a PTY.
4. Press and hold one of the six numbered
pushbuttons until you hear a beep.
Whenever that numbered pushbutton is
pressed, while in PTY mode, the PTY that
was set will return.
5. Repeat the steps for each pushbutton.
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