2010 HUMMER H3 ABS

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.

9-52 Driving and Operating
The stability system hydraulic brake
control module increases brake
pressure at each corner of the
vehicle until the ABS activates.
Minor brake pedal pulsations or
pedal movement during this time
is normal and the driver should
continue to apply the brake pedal
as the driving situation dictates.
The brake assist feature will
automatically disengage when
the brake pedal is released or
brake pedal pressure is quickly
decreased.
Hill Start Assist (HSA)
This vehicle has a Hill Start Assist
(HSA) feature, which may be useful
when the vehicle is stopped on a
grade. This feature is designed to
prevent the vehicle from rolling,
either forward or rearward, during
vehicle drive off. After the vehicle
is stopped on an incline, quickly
push the brake pedal to the floor
to activate Hill Start Assist.When the system activates, a
chime will sound and the HSA ON
message will be displayed. The
brakes will automatically be held
for a maximum of two seconds
while the driver switches from
applying the brakes to pushing
the accelerator pedal. When Hill
Start Assist is active, the driver
might experience a
“hard brake
pedal.” This is normal and does
not affect safe brake operation.
After activation, the system will
automatically disengage when the
accelerator pedal is pressed. Do
not turn off the ignition while this
feature is active. The Hill Start
Assist feature may not disengage
fully if the ignition is turned off.
The system will not activate with
the transmission in P (Park), when
traveling down a steep grade in a
drive gear, or if the vehicle is facing
uphill with the transmission in
R (Reverse).
Ride Control Systems
Traction Control
System (TCS)
The 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, TCS reduces engine
power. The system may be heard
or felt while it is working. This is
normal and does not mean there is
a problem with the vehicle.
TCS can operate on dry roads
under some conditions. When
this happens, the system may be
heard working or a reduction in
acceleration may be noticed. This
is normal and does not mean there
is a problem with the vehicle.

Driving and Operating 9-73
Vehicles with an automatic
transmission can tow in D (Drive).
Shift the transmission to a lower
gear if the transmission shifts too
often under heavy loads and/or
hilly conditions. For vehicles with a
manual transmission, it is better not
to use the highest gear.
When towing at high altitude on
steep uphill grades, consider the
following: Engine coolant will boil at
a lower temperature than at normal
altitudes. If the engine is turned off
immediately after towing at high
altitude on steep uphill grades, the
vehicle may show signs similar to
engine overheating. To avoid this,
let the engine run while parked,
preferably on level ground, with the
automatic transmission in P (Park)
for a few minutes before turning the
engine off. For vehicles with manualtransmissions, let the engine run
while parked, preferably on level
ground, with the transmission out of
gear and the parking brake applied,
for a few minutes before turning the
engine off. If the overheat warning
comes on, see
Engine Overheating
on page 10‑22.
Parking on Hills
{WARNING
Parking the vehicle on a hill
with the trailer attached can be
dangerous. If something goes
wrong, the rig could start to move.
People can be injured, and both
the vehicle and the trailer can be
damaged. When possible, always
park the rig on a flat surface. If parking the rig on a hill:
1. Press the brake pedal, but do
not shift into P (Park) yet for
vehicles with an automatic
transmission, or into gear
for vehicles with a manual
transmission. Turn the wheels
into the curb if facing downhill
or into traffic if facing uphill.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, release the brake pedal
until the chocks absorb the load.
4. Reapply the brake pedal. Then apply the parking brake and shift
into P (Park) for vehicles with an
automatic transmission or into
gear for vehicles with a manual
transmission.
5. Release the brake pedal.

Vehicle Care 10-39
Fuses and Circuit
Breakers
The wiring circuits in your vehicle
are protected from short circuits by
a combination of fuses and circuit
breakers. This greatly reduces the
chance of fires caused by electrical
problems.
Look at the silver-colored band
inside the fuse. If the band is broken
or melted, replace the fuse. Be sure
you replace a bad fuse with a new
one of the identical size and rating.
If you ever have a problem on the
road and do not have a spare fuse,
you can borrow one that has the
same amperage. Just pick some
feature of your vehicle that you can
get along without—like the radio
or cigarette lighter —and use its
fuse, if it is the correct amperage.
Replace it as soon as you can.
Engine Compartment
Fuse Block
The engine compartment fuse
block is located on the driver side
of the engine compartment. See
Engine Compartment Overview
on
page 10‑6for more information on
location.
To remove the cover, push in on the
tabs at the ends of the cover and
lift. To reinstall the cover, line up the
tabs and push down on the cover
until the tabs clicks into place.
Notice: Spilling liquid on any
electrical components on the
vehicle may damage it. Always
keep the covers on any electrical
component.

Vehicle Care 10-83
To store the jack tool bag and jack:
1. Return the tools to the jacktool bag.
2. Secure the tool bag to the jackby securely wrapping the straps
around the jack. Then, slide the
straps through the rings on the
bag and secure. 3. Position the jack and jack tool
bag in the swing-gate.
When reinstalling the jack and
jack tool bag, make sure the jack
base is securely seated behind
the tabs in the swing-gate.
4. Reinstall the wing nut retainer tofasten the jack and tool bag in
the storage compartment.
Make sure that the wing nut
passes through the tool bag and
the jack before tightening it. 5. Turn the wing nut retainer
clockwise to secure.
6. Reinstall the compartment cover by inserting the locator tabs in
the holes in the swing-gate.
Push the latches down to
secure.

Vehicle Care 10-97
Do not clean the interior using the
following cleaners or techniques:
.Never use a knife or any other
sharp object to remove a soil
from any interior surface.
.Never use a stiff brush. It can
cause damage to the vehicle's
interior surfaces.
.Never apply heavy pressure or
rub aggressively with a cleaning
cloth. Use of heavy pressure can
damage the interior and does
not improve the effectiveness of
soil removal.
.Use only mild, neutral-pH soaps.
Avoid laundry detergents or
dishwashing soaps with
degreasers. Using too much
soap will leave a residue that
leaves streaks and attracts dirt.
For liquid cleaners, about
20 drops per 3.78 L (1 gal) of
water is a good guide.
.Do not heavily saturate the
upholstery while cleaning.
.Damage to the vehicle's interior
may result from the use of many
organic solvents such as naptha,
alcohol, etc.
Fabric/Carpet
Use a vacuum cleaner with a soft
brush attachment to remove dust
and loose dirt. A canister vacuum
with a beater bar in the nozzle may
only be used on floor carpet and
carpeted floor mats. For soils,
always try to remove them first with
plain water or club soda. Before
cleaning, gently remove as much of
the soil as possible using one of the
following techniques:
.For liquids: gently blot the
remaining soil with a paper
towel. Allow the soil to absorb
into the paper towel until no
more can be removed.
.For solid dry soils: remove as
much as possible and then
vacuum.To clean:
1. Saturate a lint-free, clean white
cloth with water or club soda.
2. Remove excess moisture.
3. Start on the outside edge of the soil and gently rub toward the
center. Continue cleaning, using
a clean area of the cloth each
time it becomes soiled.
4. Continue to gently rub the soiled area.
5. If the soil is not completely removed, use a mild soap
solution and repeat the cleaning
process with plain water.
If any of the soil remains, a
commercial fabric cleaner or spot
lifter may be necessary. Test a small
hidden area for colorfastness before
using a commercial upholstery
cleaner or spot lifter. If the locally
cleaned area gives any impression
that a ring formation may result,
clean the entire surface.

INDEX i-1
A
Accessories andModifications . . . . . . . . . . . . . . . . . 10-3
Accessory Power . . . . . . . . . . . . . . 9-35
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . . 9-81
Adding Equipment to the
Airbag-Equipped Vehicle . . . . . 3-40
Adjustments Lumbar, Front Seats . . . . . . . . . . . 3-4
Air Cleaner/Filter, Engine . . . . . 10-17
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-4
Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . 3-41
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . 3-32
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . 3-35
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-32 Airbag System (cont.)
What Will You See After
an Airbag Inflates? . . . . . . . . . . 3-33
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-31
Where Are the Airbags? . . . . . . 3-29
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . 3-40
Passenger Status Indicator . . . 5-11
Readiness Light . . . . . . . . . . . . . . 5-10
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . 3-40
System Check . . . . . . . . . . . . . . . . 3-27
Alarm System Anti-Theft . . . . . . . . . . . . . . . . . . . . . . 2-9
AM-FM Radio . . . . . . . . . . . . . . . . . . . 7-5
Antenna Satellite Radio . . . . . . . . . . . . . . . . 7-10
Anti-Theft Alarm System . . . . . . . . . . . . . . . . . 2-9 Antilock Brake
System (ABS) . . . . . . . . . . . . . . . . 9-50
Warning Light . . . . . . . . . . . . . . . . . 5-15
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . 10-92
Interior . . . . . . . . . . . . . . . . . . . . . . 10-96
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Audio Players . . . . . . . . . . . . . . . . . 7-10
CD . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Audio System Fixed Mast Antenna . . . . . . . . . . 7-10
Radio Reception . . . . . . . . . . . . . . . 7-9
Theft-Deterrent Feature . . . . . . . . 7-2
Automatic Door Locks . . . . . . . . . . . . . . . . . . . . 2-6
Headlamp System . . . . . . . . . . . . . 6-4
Automatic Transmission . . . . . . . 9-41 Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-12
Shiftlock Control SystemCheck . . . . . . . . . . . . . . . . . . . . . 10-30
Axle
Locking Front . . . . . . . . . . . . . . . . . 9-55
Axle, Front . . . . . . . . . . . . . . . . . . . . 10-29
Axle, Rear . . . . . . . . . . . . . . . . . . . . 10-29

i-6 INDEX
I
Ignition Positions . . . . . . . . . . . . . . 9-34
Ignition Transmission LockCheck . . . . . . . . . . . . . . . . . . . . . . . 10-31
Immobilizer . . . . . . . . . . . . . . . . . . . . 2-10
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . 3-44
Instrument Cluster . . . . . . . . . . . . . . 5-7
Introduction . . . . . . . . . . . . . . . . . . .iii, 7-1
J
Jump Starting . . . . . . . . . . . . . . . . . 10-86
K
Keyless Entry Remote (RKE) System . . . . . . . . 2-3
Keyless Entry System . . . . . . . . . . 2-2
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
L
Labeling, Tire Sidewall . . . . . . . . 10-44
Lamp Messages . . . . . . . . . . . . . . . 5-24
Lamps Daytime Running (DRL) . . . . . . . 6-3
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Exterior Controls . . . . . . . . . . . . . . . 6-1
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . . 6-3
License Plate . . . . . . . . . . . . . . . 10-37
Malfunction Indicator . . . . . . . . . 5-12
Off-Road . . . . . . . . . . . . . . . . . . . . . . 6-6
Reading . . . . . . . . . . . . . . . . . . . . . . . 6-8
Lap-Shoulder Belt . . . . . . . . . . . . . 3-20
LATCH System Replacing Parts After a
Crash . . . . . . . . . . . . . . . . . . . . . . . 3-59
Latch, Lower Anchors and Tethers for Children . . . . . . . . . . 3-51
Lighter, Cigarette . . . . . . . . . . . . . . . 5-5
Lighting
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Illumination Control . . . . . . . . . . . . 6-7 Lights
Airbag Readiness . . . . . . . . . . . . . 5-10
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 5-15
Charging System . . . . . . . . . . . . . 5-11
Cruise Control . . . . . . . . . . . . . . . . 5-18
Engine Oil Pressure . . . . . . . . . . 5-17
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-3
High-Beam On . . . . . . . . . . . . . . . . 5-17
High/Low Beam Changer . . . . . . 6-3
Safety Belt Reminders . . . . . . . . . 5-9
Security . . . . . . . . . . . . . . . . . . . . . . 5-17
Tire Pressure . . . . . . . . . . . . . . . . . 5-16
Traction Control System (TCS)/StabiliTrak
®. . . . . . . . . . 5-16
Up-Shift . . . . . . . . . . . . . . . . . . . . . . 5-15
Locking Front Axle . . . . . . . . . . . . . 9-55
Locking Rear Axle . . . . . . . . . . . . . 9-54
Locks Automatic Door . . . . . . . . . . . . . . . . 2-6
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Lockout Protection . . . . . . . . . . . . . 2-6
Power Door . . . . . . . . . . . . . . . . . . . . 2-5
Safety . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Loss of Control . . . . . . . . . . . . . . . . . 9-6