2006 HUMMER H2 service

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.
RDS Messages
INFO (Information):If the current station has a
message, INFO will appear on the display. Press this
knob to see the message. The message may display the
artist, song title, call in phone numbers, etc.
If the entire message is not displayed, parts of the
message will appear every three seconds. To scroll
through the message, press and release the INFO button.
A new group of words will appear on the display after
every press of this button. Once the complete message
has been displayed, INFO will disappear from the display
until another new message is received. The last message
can be displayed by pressing the INFO button. You can
view the last message until a new message is received or
a different station is tuned to.
Radio Messages
CAL ERR (Calibration Error):The audio system has
been calibrated for your vehicle from the factory. If
CAL ERR appears on the display, it means that the radio
has not been congured properly for the vehicle and
must be returned to your GM dealer for service.
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.
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XM™ Radio Messages
Radio Display
MessageCondition Action Required
XL (Explicit
Language Channels)XL on the radio display,
after the channel name,
indicates content with
explicit language.These channels, or any others, can be blocked at a
customer’s request, by calling 1-800-852-XMXM (9696).
Updating Updating
encryption codeThe encryption code in the receiver is being updated, and
no action is required. This process should take no longer
than 30 seconds.
No Signal Loss of signal The system is functioning correctly, but the vehicle is in a
location that is blocking the XM signal. When you move into
an open area, the signal should return.
Loading XM Acquiring channel audio
(after 4 second delay)The audio system is acquiring and processing audio and
text data. No action is needed. This message should
disappear shortly.
CH Off Air Channel not in service This channel is not currently in service. Tune to
another channel.
CH Unavail Channel no
longer availableThis previously assigned channel is no longer assigned.
Tune to another station. If this station was one of the
presets, choose another station for that preset button.
No Info Artist Name/Feature
not availableNo artist information is available at this time on this channel.
The system is working properly.
No Info Song/Program Title not
availableNo song title information is available at this time on this
channel. The system is working properly.
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XM™ Radio Messages (cont’d)
Radio Display
MessageCondition Action Required
No Info Category Name
not availableNo category information is available at this time on this
channel. The system is working properly.
No Info No Text/Informational
message availableNo text or informational messages are available at this time
on this channel. The system is working properly.
Not Found No channel available for
the chosen categoryThere are no channels available for the selected category.
The system is working properly.
XM Locked Theft lock active The XM receiver in the vehicle may have previously been
in another vehicle. For security purposes, XM receivers
cannot be swapped between vehicles. If this message is
received after having your vehicle serviced, check with your
GM dealer.
Radio ID Radio ID label
(channel 0)If tuned to channel 0, this message will alternate with the
XM Radio 8 digit radio ID label. This label is needed to
activate the service.
Unknown Radio ID not known
(should only be if
hardware failure)If this message is received when tuned to channel 0, there
may be a receiver fault. Consult with your GM dealer.
Chk XMRcvr Hardware failure If this message does not clear within a short period of
time, your receiver may have a fault. Consult with your
GM dealer.
3-82

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.
XM™ Satellite Radio Service
XM™ Satellite Radio Service gives digital radio
reception from coast-to-coast in the 48 contiguous
United States, and in Canada (if available). Just as with
FM, tall buildings or hills can interfere with satellite
radio signals, causing the sound to fade in and out. In
addition, traveling or standing under heavy foliage,
bridges, garages, or tunnels may cause loss of the
XM™ signal for a period of time. The radio may display
NO SIGNAL to indicate interference.
Care of the Cassette Tape Player
A tape player that is not cleaned regularly can cause
reduced sound quality, ruined cassettes, or a damaged
mechanism. Cassette tapes should be stored in their
cases away from contaminants, direct sunlight, and
extreme heat. If they are not, they may not operate
properly or may cause failure of the tape player.
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A non-scrubbing action, wet-type cleaner which uses a
cassette with a fabric belt to clean the tape head
can be used. This type of cleaning cassette will not
eject on its own. A non-scrubbing action cleaner may not
clean as thoroughly as the scrubbing type cleaner.
The use of a non-scrubbing action, dry-type cleaning
cassette is not recommended.
After the player is cleaned, press and hold the eject
button for ve seconds to reset the CLEAN indicator.
The radio will display --- or CLEANED to show the
indicator was reset.
Cassettes are subject to wear and the sound
quality may degrade over time. Always make sure
the cassette tape is in good condition before the
tape player is serviced.Care of Your CDs and DVDs
Handle CDs and DVDs carefully. Store them in their
original cases or other protective cases and away from
direct sunlight and dust. The CD and DVD player
scans the bottom surface of the disc. If the surface of a
CD or DVD is damaged, such as cracked, broken, or
scratched, the CD or DVD will not play properly or not at
all. If the surface of a CD or DVD is soiled, take a
soft, lint free cloth or dampen a clean, soft cloth in a
mild, neutral detergent solution mixed with water,
and clean it. Make sure the wiping process starts from
the center to the edge. If a dampened cloth was
used to clean the disc, dry it with a dry cotton cloth.
Do not touch the bottom side of a CD or DVD
while handling it; this could damage the surface. Pick up
CDs or DVDs by grasping the outer edges or the
edge of the hole and the outer edge.
Care of the CD and DVD Player
The use of CD or DVD lens cleaners for CDs or DVDs
are not advised, due to the risk of contaminating the
lens of the CD optics with lubricants internal to the CD
or DVD mechanism.
3-113

Traction Control System (TCS)
Your vehicle has a Traction Control System (TCS) that
limits wheel spin. This is especially useful in slippery
road conditions. The system operates only if it senses
that any of the wheels are spinning or beginning to lose
traction. When this happens, the system applies the
brakes to limit wheel spin.
The Traction Control System may operate on dry roads
under some conditions. When this happens, you may
notice a reduction in acceleration or a pumping sound.
This is normal and doesn’t mean there’s a problem with
your vehicle. Examples of these conditions include hard
acceleration in a turn, an abrupt upshift or downshift of
the transmission or driving on rough roads.
If your vehicle is in cruise control when the TCS begins
to limit wheel spin, the cruise control will automatically
disengage. When road conditions allow you to safely
use it again, you may re-engage the cruise control. See
Cruise Control on page 3-11.
Another feature of this system is the Traction
Control 2 (TC2) mode. TC2 should be selected for
improved traction and system performance when the
vehicle is on loose surfaces such as deep sand or mud.To enter this mode,
press the TC2 button
located on the instrument
panel to the right of
the steering wheel.
TC2 only operates in the following transfer case modes:
Four-Wheel-High Lock
Four-Wheel-Low Lock
Four-Wheel-Low Lock and Rear Axle Lock
SeeLocking Rear Axle on page 4-10for more
information on the rear axle lock.
It will not operate in Four-Wheel-High. If the TC2 button
is pressed while in Four-Wheel High, the light will
ash for about 15 seconds and then go out. The light
should also come on briey when you turn the ignition
key to RUN; if it doesn’t see your dealer for service.
4-9

If you restart your engine, the system reverts to the
standard TCS mode.
The traction off light will
come on when a Traction
Control System or
Anti-Lock Brake System
problem has been detected
and the vehicle needs
service.
SeeTraction Off Light on page 3-36.
When the traction off light is on, adjust your driving
accordingly.
The traction control system, as delivered from the
factory, will automatically come on whenever you start
your vehicle.
Adding non-GM accessories can affect your vehicle’s
performance. SeeAccessories and Modications
on page 5-3for more information.Locking Rear Axle
The locking rear axle can give your vehicle additional
traction from the rear wheels when traveling in off-road
situations such as mud, snow, sand, steep hills and
uneven terrain.
The button used to turn
this feature on or off is
located above the transfer
case buttons to the
right of the steering wheel.
To lock the rear axle, do the following:
1. Place the transfer case in the Four-Wheel-Low Lock
mode. This is the only mode which will allow the rear
axle to lock. SeeFull-Time Four-Wheel Drive on
page 2-30for more information regarding the transfer
case and Four-Wheel-Low-Lock mode.
2. Press the button with the vehicle stopped or moving
less than 2 mph (3 km/h).
4-10

Off-Road Driving
This off-road guide is meant to provide advice for when
you drive your vehicle off paved roads. Also, see
Braking on page 4-6.
Off-road driving can be great fun. But it does have
some denite hazards. The greatest of these is
the terrain itself.
“Off-roading” means you have left the great North
American road system behind. Traffic lanes are not
marked. Curves are not banked. There are no
road signs. Surfaces can be slippery, rough, uphill or
downhill. In short, you have gone right back to nature.
Off-road driving involves some new skills. And that
is why it is very important that you read this guide.
You will nd many driving tips and suggestions.
These will help make your off-road driving safer
and more enjoyable.
Before You Go Off-Roading
There are some things to do before you go out. For
example, be sure to have all necessary maintenance
and service work done. Check to make sure all
underbody shields are properly attached. Remove any
removable side steps. SeeAssist Steps on page 4-34.
Make sure any equipment you may need — rst aid
kit, cell phone, ashlight, etc. — is securely stored in the
vehicle. Be sure you read all the information about
your four-wheel-drive vehicle in this manual. Is there
enough fuel? Is the spare tire fully inated? Are the uid
levels up where they should be? What are the local
laws that apply to off-roading where you will be driving?
If you do not know, you should check with law
enforcement people in the area. Will you be on
someone’s private land? If so, be sure to get the
necessary permission.
Loading Your Vehicle for Off-Road
Driving
There are some important things to remember about
how to load your vehicle.
The heaviest things should be on the load oor and
forward of your rear axle. Put heavier items in the
rear area, as far forward as you can.
Be sure the load is secured properly, so driving on
the off-road terrain does not toss things around.
4-16