change time HUMMER H3 2010 User Guide

Infotainment System 7-3
Six-Disc CD Radio
The vehicle has one of these radios
as its audio system.
Playing the Radio
P(Power/Volume): Press to turn
the system on and off.
Turn to increase or to decrease the
volume. DISP (Display):
Press to:
.Display the time when the
ignition is off.
.Change between the track
number and the elapsed time
during CD playback.
.Select between showing the
preset number and the EQ
number on the Six-Disc CD
Radio.
.Retrieve four different
categories of information while
in XM™mode related to the
current song or channel: Artist,
Song Title, Category or PTY
(program type), Channel
Number/Channel Name.
To change the default display:
1. Press DISP until the desired display is shown.
2. Press and hold DISP for two seconds and the radio
produces one beep. The
selected display becomes the
default.
Audio Settings
AUTO EQ (Automatic
Equalization): Press and
release to select customized
equalization settings designed for
country/western, jazz, talk, pop,
rock, and classical.

Infotainment System 7-7
To scan stations:
1. Press and hold
torufor more
than two seconds. SC or SCAN
displays and the radio beeps
once. The radio goes to a
station, plays for a few seconds,
then goes to the next station.
2. Press
toruagain or one of
the pushbuttons to stop
scanning presets.
To scan preset stations:
1. Press and hold
torufor more
than four seconds. PSC or
PSCN displays and the radio
beeps twice. The radio goes to a
preset station, plays for a few
seconds, then goes to the next
preset station.
2. Press
toruagain or one of
the pushbuttons to stop
scanning presets. Finding a Category (CAT) Station
To select an XM station by category
for the Single CD Radio:
1. Press CAT to select a
category mode.
2. Press CAT repeatedly to change the category.
3. Press
toruto select the
first station in the category.
4. To go to another station in the selected category:
.Press CAT once if the
category is displayed.
.Press CAT twice if the
category is not displayed.
5. Press CAT to exit program type select mode. If CAT times out
and is no longer on the display,
go back to Step 1.
If the desired program type cannot
be found, NONE or NOT FOUND
displays and the radio returns to the
previous station. To select an XM station by category
for the Six-Disc CD Radio:
1. Press CAT to select a
category mode.
2. Turn
eto select a category.
3. Press
toruto select the
first station in the category.
4. Press
toruto go to another
station within the category if
category is displayed. If CAT
times out and is no longer on the
display, go back to Step 1.
5. Press CAT to exit program type select mode.
If the desired program type cannot
be found, NONE or NOT FOUND
displays and the radio returns to the
previous station.

7-16 Infotainment System
Pairing
A Bluetooth enabled cell phone
must be paired to the in‐vehicle
Bluetooth system first and then
connected to the vehicle before it
can be used. See the cell phone
manufacturers user guide for
Bluetooth functions before pairing
the cell phone. If a Bluetooth phone
is not connected, calls will be made
using OnStar
®Hands‐Free Calling,
if available. Refer to the OnStar
owner's guide for more information.
Pairing Information:
.Up to five cell phones can be
paired to the in‐vehicle Bluetooth
system.
.The pairing process is disabled
when the vehicle is moving.
.The in‐vehicle Bluetooth system
automatically links with the first
available paired cell phone in the
order the phone was paired.
.Only one paired cell phone can
be connected to the in‐vehicle
Bluetooth system at a time.
.Pairing should only need to be
completed once, unless changes
to the pairing information have
been made or the phone is
deleted.
To link to a different paired phone,
see Linking to a Different Phone
later in this section.
Pairing a Phone
1. Press and release
g. The
system responds with “Ready”
followed by a tone.
2. Say “Bluetooth”. The system
responds with “Bluetooth ready”
followed by a tone.
3. Say “Pair”. The system responds
with instructions and a four digit
PIN number. The PIN number
will be used in Step 4. 4. Start the pairing process on the
cell phone that will be paired to
the vehicle. Reference the cell
phone manufacturers user guide
for information on this process.
Locate the device named
“General Motors” in the list on
the cellular phone and follow the
instructions on the cell phone to
enter the four digit PIN number
that was provided in Step 3.
5. The system prompts for a name for the phone. Use a name that
best describes the phone. This
name will be used to indicate
which phone is connected. The
system then confirms the name
provided.
6. The system responds with “ has been
successfully paired” after the
pairing process is complete.
7. Repeat Steps 1 through 7 for additional phones to be paired.

8-2 Climate Controls
9(Fan Control): Turn clockwise or
counterclockwise to increase or
decrease the fan speed.
Air Delivery Mode Control: Turn
clockwise or counterclockwise to
change the direction of the airflow in
the vehicle. The airflow can be set
between modes.
To change the current mode, select
one of the following:
H (Vent): Air is directed to the
instrument panel outlets.
\(Bi-Level): Air is directed to the
instrument panel outlets, and the
remaining air to the floor outlets
and the defroster and side window
outlets. Cooler air is directed to the
upper outlets and warmer air to the
floor outlets. [
(Floor): Air is directed to the
floor outlets, side window outlets,
and defroster. Recirculation is not
available in this mode.
/ (Floor/Defog): This clears the
windows of fog and moisture. Air is
directed to the windshield, side
window, and floor outlets. The
system runs the air conditioning
unless the outside temperature is
near freezing or below. Recirculation
is not available in this mode.
0 (Defrost): This clears the
windshield of fog or frost more
quickly. Air is directed to the
windshield and side window
outlets. The system runs the air
conditioning system unless the
outside temperature is near or
below freezing. Recirculation is
not available in this mode.
Do not drive the vehicle until all the
windows are clear. #
(Air Conditioning): Press to
turn the air conditioning system
on or off. An indicator light comes
on when the air conditioning is
turned on. This system cools and
dehumidifies the air entering the
vehicle.
The air conditioning will not
function if the fan is turned off.
If air conditioning is selected with
fan off, the indicator light flashes
three times and then turns off.
A slight change in engine
performance may occur when the
air conditioning compressor shuts
off and turns on again. This is
normal. The system is designed
to make adjustments to help with
fuel economy while still maintaining
the selected temperature.
The air conditioning system
removes moisture from the air, so
water might drip under the vehicle
while idling or after turning off the
engine. This is normal.

9-12 Driving and Operating
For mounds, washouts, loose
up-hill slopes, ditches, etc.
When wheel spin occurs as the
vehicle is moving, the driver
may notice a slight shaking or
shuddering of the vehicle. This
should be stopped as soon as
possible to prevent damage to
vehicle components. This is the
indication that a loss of traction is
occurring on this terrain. The
operator should:
1. Reduce speed and apply thebrakes.
2. Assess the terrain properly and adjust vehicle speed and gear
ranges accordingly: Four‐Wheel
High position for higher speeds
and Four‐Wheel‐Low Lock for
more torque and lower speeds.
Transmission 1 (First) gear is
generally recommended. 3. Apply slight pressure to the
brake when the shaking or
shuddering sensation is felt,
keeping the vehicle moving in
a controlled manner.
4. Be prepared to alternate between braking and
accelerating through the
adverse terrain.
Getting Familiar with Off-Road
Driving
It is a good idea to practice in an
area that is safe and close to home
before you go into the wilderness.
Off-roading requires some new and
different skills.
Tune your senses to different kinds
of signals. Your eyes need to
constantly sweep the terrain for
unexpected obstacles. Your ears
need to listen for unusual tire or
engine sounds. Use your arms,
hands, feet, and body to respond to
vibrations and vehicle bounce. Controlling the vehicle is the key to
successful off-road driving. One of
the best ways to control the vehicle
is to control the speed. At higher
speeds:
.You approach things faster and
have less time to react.
.There is less time to scan the
terrain for obstacles.
.The vehicle has more bounce
when driving over obstacles.
.More braking distance is
needed, especially on an
unpaved surface.
{WARNING
When you are driving off-road,
bouncing and quick changes in
direction can easily throw you
out of position. This could cause
you to lose control and crash.
So, whether you are driving on
or off the road, you and your
passengers should wear safety
belts.

9-36 Driving and Operating
To prevent gear damage, this
system also prevents cranking if
the engine is already running.
Engine cranking can be stopped
by turning the ignition switch to
ACC/ACCESSORY or
LOCK/OFF.
Notice: Cranking the engine for
long periods of time, by returning
the key to the START position
immediately after cranking has
ended, can overheat and damage
the cranking motor, and drain the
battery. Wait at least 15 seconds
between each try, to let the
cranking motor cool down.
2. If the engine does not start
after 5‐10 seconds, especially
in very cold weather (below 0°F
or−18°C), it could be flooded
with too much gasoline. Push
the accelerator pedal all the way
to the floor and holding it there
as you hold the key in START
for a maximum of 15 seconds. Wait at least 15 seconds
between each try, to allow the
cranking motor to cool. When
the engine starts, let go of the
key and accelerator. If the
vehicle starts briefly but then
stops again, repeat the
procedure. This clears the extra
gasoline from the engine. Do not
race the engine immediately
after starting it. Operate the
engine and transmission gently
until the oil warms up and
lubricates all moving parts.
Notice: The engine is designed to
work with the electronics in the
vehicle. If you add electrical
parts or accessories, you could
change the way the engine
operates. Before adding electrical
equipment, check with your
dealer. If you do not, the engine
might not perform properly. Any
resulting damage would not be
covered by the vehicle warranty.Engine Coolant Heater
The engine coolant heater can
provide easier starting and better
fuel economy during engine
warm-up in cold weather conditions
at or below −18°C (0°F). Vehicles
with an engine coolant heater
should be plugged in at least
four hours before starting. An
internal thermostat in the plug-end
of the cord may exist which will
prevent engine coolant heater
operation at temperatures
above −18°C (0° F).
To Use the Engine Coolant
Heater
1. Turn off the engine.
2. Open the hood and unwrap
the electrical cord. The cord
is located in the engine
compartment behind the
underhood fuse block on the
driver side of the vehicle.

9-50 Driving and Operating
Brakes
Antilock Brake
System (ABS)
This vehicle has the Antilock Brake
System (ABS), an advanced
electronic braking system that helps
prevent a braking skid.
When the engine is started and the
vehicle begins to drive away, ABS
checks itself. A momentary motor or
clicking noise might be heard while
this test is going on, and it might
even be noticed that the brake
pedal moves a little. This is normal.
If there is a problem with ABS, this
warning light stays on. SeeAntilock
Brake System (ABS) Warning Light
on page 5‑15. If driving safely on a wet road and
it becomes necessary to slam on
the brakes and continue braking
to avoid a sudden obstacle, a
computer senses that the wheels
are slowing down. If one of the
wheels is about to stop rolling, the
computer will separately work the
brakes at each wheel.
ABS can change the brake pressure
to each wheel, as required, faster
than any driver could. This can help
the driver steer around the obstacle
while braking hard.
As the brakes are applied, the
computer keeps receiving updates
on wheel speed and controls
braking pressure accordingly.
Remember: ABS does not change
the time needed to get a foot up to
the brake pedal or always decrease
stopping distance. If you get too
close to the vehicle in front of you,
there will not be enough time to
apply the brakes if that vehicle
suddenly slows or stops. Always
leave enough room up ahead to
stop, even with ABS.
Using ABS
Do not pump the brakes. Just hold
the brake pedal down firmly and let
ABS work. The ABS pump or motor
might be heard operating, and the
brake pedal might be felt to pulsate,
but this is normal.
Braking in Emergencies
ABS allows the driver to steer and
brake at the same time. In many
emergencies, steering can help
more than even the very best
braking.

Driving and Operating 9-67
Many service stations will not have
an 85% ethanol fuel (E85) pump
available. The U.S. Department of
Energy has an alternative fuels
website (www.eere.energy.gov/afdc/
infrastructure/locator.html) that can
help you find E85 fuel. Those
stations that do have E85 should
have a label indicating ethanol
content. Do not use the fuel if the
ethanol content is greater than 85%.
At a minimum, E85 should meet
ASTM Specification D 5798. By
definition, this means that fuel
labeled E85 will have an ethanol
content between 70% and 85%.
Filling the fuel tank with fuel
mixtures that do not meet ASTM
specifications can affect driveability
and could cause the malfunction
indicator lamp to come on.To ensure quick starts in the
wintertime, the E85 fuel must be
formulated properly for your climate
according to ASTM specification
D 5798. If you have trouble starting
on E85, it could be because the
E85 fuel is not properly formulated
for your climate. If this happens,
switching to gasoline or adding
gasoline to the fuel tank can
improve starting. For good starting
and heater efficiency below 0°C
(32°F), the fuel mix in the fuel tank
should contain no more than 70%
ethanol. It is best not to alternate
repeatedly between gasoline and
E85. If you do switch fuels, it is
recommended that you add as
much fuel as possible
—do not add
less than 11 L (three gallons) when
refueling. You should drive the
vehicle immediately after refueling
for at least 11 km (seven miles) to
allow the vehicle to adapt to the
change in ethanol concentration. E85 has less energy per gallon
than gasoline, so you will need to
refill the fuel tank more often when
using E85 than when you are using
gasoline. See
Filling the Tank
on
page 9‑68.
Notice: Some additives are not
compatible with E85 fuel and can
harm the vehicle's fuel system.
Do not add anything to E85.
Damage caused by additives
would not be covered by the
vehicle warranty.
Notice: This vehicle was not
designed for fuel that contains
methanol. Do not use fuel
containing methanol. It can
corrode metal parts in the fuel
system and also damage plastic
and rubber parts. That damage
would not be covered under the
vehicle warranty.

Vehicle Care 10-11
Cold Temperature Operation
If in an area of extreme cold, where
the temperature falls below−29°C
(−20°F), use either an SAE 5W-30
synthetic oil or an SAE 0W-30
engine oil. Both provide easier
cold starting for the engine at
extremely low temperatures. Always
use an oil that meets the required
specification, GM6094M. See “What
Kind of Engine Oil to Use” for more
information.
Engine Oil Additives / Engine
Oil Flushes
Do not add anything to the oil.
The recommended oils with the
starburst symbol that meet GM
standards are all that is needed
for good performance and engine
protection.
Engine oil system flushes are not
recommended and could cause
engine damage not covered by the
vehicle warranty.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system
that indicates when to change the
engine oil and filter. This is based
on engine revolutions and engine
temperature, and not on mileage.
Based on driving conditions, the
mileage at which an oil change is
indicated can vary considerably. For
the oil life system to work properly,
the system must be reset every time
the oil is changed.
When the system has calculated
that oil life has been diminished,
it indicates that an oil change
is necessary. A “Change Oil”
message comes on. See Engine Oil
Messages
on page 5‑23. Change
the oil as soon as possible within
the next 1 000 km (600 miles). It is
possible that, if driving under the
best conditions, the oil life system
might not indicate that an oil change
is necessary for over a year. However, the engine oil and filter
must be changed at least once a
year and at this time the system
must be reset. Your dealer has
trained service people who will
perform this work using genuine
parts and reset the system. It is also
important to check the oil regularly
and keep it at the proper level.
If the system is ever reset
accidentally, the oil must be
changed at 5 000 km (3,000 miles)
since the last oil change.
Remember to reset the oil life
system whenever the oil is changed.
How to Reset the Engine Oil
Life System
The Engine Oil Life System
calculates when to change the
engine oil and filter based on
vehicle use. Whenever the oil is
changed, reset the system so it can
calculate when the next oil change
is required. If a situation occurs
where the oil is changed prior to a
change engine oil message being
turned on, reset the system.

10-12 Vehicle Care
After changing the engine oil, reset
the system:
1. Turn the ignition key to ON/RUNwith the engine off.
2. Press and release the stem in the lower center of the
instrument cluster until the OIL
LIFE message is displayed.
3. Once the alternating “Oil Life”
and “Reset” messages appear,
press and hold the stem until
several beeps sound. This
confirms that the oil life system
has been reset.
4. Turn the key to LOCK/OFF.
If the “Change Oil” message
comes on again and stays on for
30 seconds at the next ignition
cycle, it did not reset. The system
needs to be reset again.What to Do with Used Oil
Used engine oil contains certain
elements that can be unhealthy for
your skin and could even cause
cancer. Do not let used oil stay on
your skin for very long. Clean your
skin and nails with soap and water,
or a good hand cleaner. Wash or
properly dispose of clothing or rags
containing used engine oil. See the
manufacturer's warnings about the
use and disposal of oil products.
Used oil can be a threat to the
environment. If you change your
own oil, be sure to drain all the oil
from the filter before disposal. Never
dispose of oil by putting it in the
trash, pouring it on the ground, into
sewers, or into streams or bodies of
water. Recycle it by taking it to a
place that collects used oil.
Automatic Transmission
Fluid
When to Check and Change
Automatic Transmission Fluid
A good time to check the automatic
transmission fluid level is when the
engine oil is changed.
Change the fluid and filter at the
intervals listed in Scheduled
Maintenance
on page 11‑2, and be
sure to use the transmission fluid
listed in Recommended Fluids and
Lubricants on page 11‑8.
How to Check Automatic
Transmission Fluid
Because this operation can be a
little difficult, you may choose to
have this done at the dealer service
department.
If adding it yourself, be sure to
follow all the instructions here,
or there could be a false reading on
the dipstick.