2006 GMC SIERRA radio

Battery Warning Light
If this light is displayed
when the engine is running,
you may have a problem
with your charging system.
The battery display will also stay on while the key is in
RUN until the engine is started.
If the light stays on after starting the engine it could
indicate a problem with the generator drive belt, or some
other charging system problem. Have it checked right
away. Driving with this light displayed could drain your
battery.
If you must drive a short distance with this light
displayed, it helps to turn off all your accessories,
such as the radio and the air conditioner.
Voltmeter Gage
When your engine is not
running, but the ignition is
in RUN, this gage shows
your battery’s state of
charge in DC volts.
When the engine is running, the gage shows the
condition of the charging system. The gage may
transition from a higher to lower or a lower to higher
reading, this is normal. Readings between the low and
high warning zones indicate the normal operating range.
The voltmeter gage may also read lower when in fuel
economy mode. This is normal.
3-40

Audio System(s)
Determine which radio your vehicle has and then read the
pages following to familiarize yourself with its features.
Driving without distraction is a necessity for a safer
driving experience. SeeDefensive Driving on page 4-2.
By taking a few moments to read this manual and get
familiar with your vehicle’s audio system, you can use it
with less effort, as well as take advantage of its features.
While your vehicle is parked, set up your audio system
by presetting your favorite radio stations, setting the
tone and adjusting the speakers. Then, when driving
conditions permit, you can tune to your favorite
stations using the presets and steering wheel controls
(if equipped).
{CAUTION:
This system provides you with a far greater
access to audio stations and song listings.
Giving extended attention to entertainment
tasks while driving can cause a crash and you
or others can be injured or killed. Always keep
your eyes on the road and your mind on the
drive — avoid engaging in extended searching
while driving.Keeping your mind on the drive is important for safe
driving. For more information, seeDefensive Driving
on page 4-2
Here are some ways in which you can help avoid
distraction while driving.
While your vehicle is parked:
Familiarize yourself with all of its controls.
Familiarize yourself with its operation.
Set up your audio system by presetting your favorite
radio stations, setting the tone, and adjusting the
speakers. Then, when driving conditions permit, you
can tune to your favorite radio stations using the
presets and steering wheel controls (if equipped).
Notice:Before adding any sound equipment to your
vehicle, such as an audio system, CD player, CB
radio, mobile telephone, or two-way radio, make sure
that it can be added by checking with your dealer.
Also, check federal rules covering mobile radio and
telephone units. If sound equipment can be added,
it is very important to do it properly. Added sound
equipment may interfere with the operation of your
vehicle’s engine, radio, or other systems, and even
damage them. Your vehicle’s systems may interfere
with the operation of sound equipment that has been
added.
3-70

Notice:The chime signals related to safety belts,
parking brake, and other functions of your vehicle
operate through the GM radio/entertainment system.
If that equipment is replaced or additional equipment
is added to your vehicle, the chimes may not work.
Make sure that replacement or additional equipment
is compatible with your vehicle before installing it.
SeeAccessories and Modifications on page 5-4.
Your vehicle may have a feature called Retained
Accessory Power (RAP). With RAP, the audio system
can be played even after the ignition is turned off. See
Retained Accessory Power (RAP) on page 2-23for more
information.
Setting the Time for Radios without
Radio Data Systems (RDS)
Press and hold HR until the correct hour appears on the
display. Press and hold MIN until the correct minute
appears on the display. There is an initial two-second
delay before the clock goes into time-set mode.
Display the time with the ignition off, by pressing RCL,
HR, or MIN.
Setting the Time for Radios with
Radio Data Systems (RDS)
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.
3-71

AM-FM Radio
Playing the Radio
PWR (Power):Press this knob to turn the system on
and off.
VOL (Volume):Turn this knob to increase or to
decrease the volume.
RCL (Recall):Press this knob to switch the display
between the radio station frequency, band, and the
time. When the ignition is off, press this knob to display
the time.
Finding a Station
AM FM:Press this button to switch between FM1, FM2,
or AM. The display will show the selection.
TUNE:Turn this knob to select radio stations.
oSEEKp:Press the right or the left arrow to go to
the next or to the previous station and stay there.
To scan stations, press and hold either SEEK arrow for
two seconds until you hear a beep. 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.
To scan preset stations, press and hold either
SEEK arrow for more than four seconds until you hear
two beeps. The radio will go to the rst preset station
stored on the pushbuttons, play for a few seconds, then
go on to the next preset station. Press either SEEK arrow
again to stop scanning presets.
The radio will only seek and scan stations with a strong
signal that are in the selected band.
3-72

Setting Preset Stations
Up to 18 stations (six FM1, six FM2, and six AM) can
be programmed on the six numbered pushbuttons,
by performing the following steps:
1. Turn the radio on.
2. Press AM FM to select FM1, FM2, or AM.
3. Tune in the desired station.
4. Press and hold one of the six numbered pushbuttons
until you hear a beep. Whenever that numbered
pushbutton is pressed, the station that was set
will return.
5. Repeat the steps for each pushbutton.
Setting the Tone (Bass/Treble)
AUDIO:To adjust bass or treble, press and release
AUDIO until BAS or TRE appears on the display. Then
press and hold the up or the down arrow to increase
or to decrease. If a station is weak or noisy, decrease
the treble.
To adjust bass or treble to the middle position, select
BAS or TRE. Then press and hold AUDIO for more than
two seconds until you hear a beep. B and a zero or T and
a zero will appear on the display.
To adjust all tone and speaker controls to the middle
position, rst end out of audio mode by pressing another
button, causing the radio to perform that function or
by waiting ve seconds for the display to return to time
of day. Then press and hold AUDIO for more than
two seconds until you hear a beep. CEN will appear on
the display.
3-73

Adjusting the Speakers (Balance/Fade)
AUDIO:To adjust the balance between the right
and the left speakers, press and release AUDIO until
BAL appears on the display. Then press and hold the up
or the down arrow to move the sound toward the right
or the left speakers.
To adjust the fade between the front and the rear
speakers, press and release AUDIO until FAD appears
on the display. Then press and hold the up or the down
arrow to move the sound toward the front or the rear
speakers.
To adjust balance or fade to the middle position, select
BAL or FAD. Then press and hold AUDIO for more than
two seconds until you hear a beep. L (balance) and a
zero or F and a zero will appear on the display.
To adjust all tone and speaker controls to the middle
position, rst end out of audio mode by pressing another
button, causing the radio to perform that function or by
waiting ve seconds for the display to return to time
of day. Then press and hold AUDIO for more than
two seconds until you hear a beep. CEN will appear
on the display.
Fade may not be available if the vehicle is a regular cab
model.
Radio Messages
CAL (Calibrated):The audio system has been
calibrated for your vehicle from the factory. If CAL
appears on the display it means that the radio has not
been congured properly for your vehicle and must be
returned to your GM dealer for service.
LOC (Locked):This message is displayed when the
THEFTLOCK
®system has locked up. Take the vehicle
to your GM dealer for service.
If any error occurs repeatedly or if an error cannot be
corrected, contact your GM dealer.
3-74

Radio with CD
If your vehicle has the Bose®audio system, your
vehicle will have six Bose®amplied speakers.
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
This system relies upon receiving specic information
from these stations and will only work when the
information is available. In rare cases, a radio station
may broadcast incorrect information that will cause
the radio features to work improperly. If this happens,
contact the radio station.
While the radio is tuned to an RDS station, the station
name or call letters will appear on the display instead of
the frequency. RDS stations may also provide the time of
day, a program type (PTY) for current programming, and
the name of the program being broadcast. Base Radio Shown, Bose
®Similar
3-75

XM™ Satellite Radio Service
XM™ is a satellite radio service that is based in
the 48 contiguous United States and in Canada
(if available). XM™ offers over 100 coast-to-coast
channels including music, news, sports, talk, and
children’s programming. XM™ provides digital quality
audio and text information that includes song title
and artist name. A service fee is required in order to
receive the XM™ service. For more information,
contact XM™ at www.xmradio.com or call
1-800-852-XMXM (9696).
Playing the Radio
PWR (Power):Press this knob to turn the system on
and off.
oVOLp(Volume):Turn this knob to increase or to
decrease the volume.
INFO (Information):When the ignition is off, press this
knob to display the time.
For RDS, press the INFO knob to change what appears
on the display while using RDS. The display options are
station name, RDS station frequency, PTY, and the name
of the program (if available).For XM™ (if equipped), press the INFO knob while
in XM™ mode to retrieve four different categories of
information related to the current song or channel:
Artist, Song Title, Category or PTY, Channel
Number/Channel Name.
To change the default on the display, press the INFO
knob until you see the display you want, then hold the
knob until you hear a beep. The selected display will
now be the default.
AUTO VOL (Automatic Volume):With automatic
volume, the audio system will adjust automatically to
make up for road and wind noise as you drive by
increasing the volume as vehicle speed increases.
Set the volume at the desired level. Press this button to
select LOW, MEDIUM, or HIGH. AVOL will appear on the
display. Each higher setting will provide more volume
compensation at faster vehicle speeds. To turn automatic
volume off, press this button until AVOL OFF appears on
the display.
3-76