service HUMMER H3 2010 Owner's Manual

Instruments and Controls 5-11
Passenger Airbag Status
Indicator
The vehicle has the passenger
sensing system. SeePassenger
Sensing System
on page 3‑35for
important safety information. The
instrument panel has a passenger
airbag status indicator.
United States
Canada
When the vehicle is started, the
passenger airbag status indicator
will light ON and OFF, or the symbol
for on and off, for several seconds as a system check. Then, after
several more seconds, the status
indicator will light either ON or OFF,
or either the on or off symbol to let
you know the status of the right front
passenger frontal airbag.
If the word ON or the on symbol is
lit on the passenger airbag status
indicator, it means that the right
front passenger frontal airbag is
enabled (may inflate).
If the word OFF or the off symbol is
lit on the airbag status indicator, it
means that the passenger sensing
system has turned off the right front
passenger frontal airbag.
If, after several seconds, both status
indicator lights remain on, or if there
are no lights at all, there may be
a problem with the lights or the
passenger sensing system. See
your dealer for service.
{WARNING
If the airbag readiness light
ever comes on and stays on, it
means that something may be
wrong with the airbag system.
To help avoid injury to yourself or
others, have the vehicle serviced
right away. See
Airbag Readiness
Light
on page 5‑10for more
information, including important
safety information.
Charging System Light
This light comes on briefly when the
ignition key is turned, but the engine
is not running, as a check to show it
is working.

5-12 Instruments and Controls
It should go out once the engine
starts. If it stays on, or comes on
while driving, there could be a
problem with the charging system.
A charging system message in the
Driver Information Center (DIC)
may also appear. SeeBattery
Voltage and Charging Messages
on
page 5‑21for more information.
This light could indicate that there
are problems with a generator drive
belt, or that there is an electrical
problem. Have it checked right
away. If the vehicle must be driven a
short distance with the light on, turn
off all the accessories, such as the
radio and air conditioner.
Malfunction
Indicator Lamp
A computer system called OBD II
(On-Board Diagnostics-Second
Generation) monitors operation of
the fuel, ignition, and emission
control systems. It ensures that emissions are at acceptable levels
for the life of the vehicle, helping to
produce a cleaner environment.
This light comes on when the
ignition is on, but the engine is not
running, as a check to show it is
working. If it does not, have the
vehicle serviced by your dealer.
If the check engine light comes on
and stays on, while the engine is
running, this indicates that there is
an OBD II problem and service is
required.
Malfunctions often are indicated by
the system before any problem is
apparent. Being aware of the light
can prevent more serious damage
to the vehicle. This system assists
the service technician in correctly
diagnosing any malfunction.Notice:
If the vehicle is
continually driven with this light
on, after a while, the emission
controls might not work as well,
the vehicle's fuel economy might
not be as good, and the engine
might not run as smoothly. This
could lead to costly repairs that
might not be covered by the
vehicle warranty.
Notice: Modifications made to the
engine, transmission, exhaust,
intake, or fuel system of the
vehicle or the replacement of
the original tires with other
than those of the same Tire
Performance Criteria (TPC) can
affect the vehicle's emission
controls and can cause this light
to come on. Modifications to
these systems could lead to
costly repairs not covered by
the vehicle warranty. This
could also result in a failure
to pass a required Emission
Inspection/Maintenance test.
See Accessories and
Modifications on page 10‑3.

Instruments and Controls 5-13
This light comes on during a
malfunction in one of two ways:
Light Flashing:A misfire condition
has been detected. A misfire
increases vehicle emissions and
could damage the emission control
system on the vehicle. Diagnosis
and service might be required.
The following can prevent more
serious damage to the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
.If towing a trailer, reduce the
amount of cargo being hauled as
soon as it is possible.
If the light continues to flash, when
it is safe to do so, stop the vehicle.
Find a safe place to park the
vehicle. Turn the key off, wait at
least 10 seconds, and restart the
engine. If the light is still flashing,
follow the previous steps and see
your dealer for service as soon as
possible. Light On Steady:
An emission
control system malfunction has
been detected on the vehicle.
Diagnosis and service might be
required.
An emission system malfunction
might be corrected.
.Make sure the fuel cap is fully
installed. See Filling the Tankon
page 9‑68. The diagnostic
system can determine if the
fuel cap has been left off or
improperly installed. A loose or
missing fuel cap allows fuel to
evaporate into the atmosphere.
A few driving trips with the cap
properly installed should turn the
light off.
.If the vehicle has been driven
through a deep puddle of water,
the vehicle's electrical system
might be wet. The condition is
usually corrected when the
electrical system dries out.
A few driving trips should turn
the light off.
.Make sure to fuel the vehicle
with quality fuel. Poor fuel quality
causes the engine not to run as
efficiently as designed and may
cause: stalling after start-up,
stalling when the vehicle is
changed into gear, misfiring,
hesitation on acceleration,
or stumbling on acceleration.
These conditions might go away
once the engine is warmed up.
If one or more of these
conditions occurs, change the
fuel brand used. It will require at
least one full tank of the proper
fuel to turn the light off.
See Recommended Fuel
on
page 9‑64.
If none of the above have made
the light turn off, your dealer can
check the vehicle. The dealer
has the proper test equipment
and diagnostic tools to fix any
mechanical or electrical problems
that might have developed.

Instruments and Controls 5-15
If the light comes on while driving,
pull off the road and stop. The brake
pedal might be harder to push, or it
might go closer to the floor. It can
take longer to stop. If the light is
still on, have the vehicle towed for
service. SeeTowing the Vehicle
on
page 10‑90.
{WARNING
The brake system might not be
working properly if the brake
system warning light is on.
Driving with the brake system
warning light on can lead to a
crash. If the light is still on after
the vehicle has been pulled off
the road and carefully stopped,
have the vehicle towed for
service.
Antilock Brake System
(ABS) Warning Light
For vehicles with the Antilock Brake
System (ABS), this light comes on
briefly when the engine is started.
If it does not, have the vehicle
serviced by your dealer. If the
system is working normally the
indicator light will then go off.
If the ABS light stays on, turn the
ignition off. If the light comes on
while driving, stop as soon as it is
safely possible and turn the ignition
off. Then start the engine again to
reset the system. If the ABS light
stays on, or comes on again while
driving, the vehicle needs service.
If the regular brake system warning
light is not on, the vehicle still has
brakes, but not antilock brakes. If the regular brake system warning
light is also on, the vehicle does not
have antilock brakes and there is a
problem with the regular brakes.
See
Brake System Warning Light
on page 5‑14.
For vehicles with a Driver
Information Center (DIC), see
Brake System Messages
on
page 5‑22for more information.
Up-Shift Light
The vehicle may have an up-shift
light.
When this light comes on, shift to
the next higher gear if weather,
road, and traffic conditions allow.
See Manual Transmission
on
page 9‑44for more information.

5-16 Instruments and Controls
Traction Control System
(TCS)/StabiliTrak®Light
The StabiliTrak system or the
Traction Control System (TCS)
indicator/warning light comes on
briefly while starting the engine.
If it does not, have the vehicle
serviced by your dealer. If the
system is working normally the
indicator light will then go off.
The indicator/warning light flashes
while the StabiliTrak or TCS system
is working to control the vehicle on
a low traction surface.
If the TCS warning light comes on
and stays on while driving, the
vehicle needs service.The light comes on when the TCS
and the StabiliTrak system is turned
off. If the TCS is off, wheel spin is
not limited. If the StabiliTrak system
is off, the system does not assist in
controlling the vehicle. Turn on the
TCS and the StabiliTrak system and
the warning light turns off.
See
StabiliTrak System
on
page 9‑53and Traction Control
System (TCS)on page 9‑52for
more information
Tire Pressure Light
For vehicles with a tire pressure
monitoring system, this light comes
on briefly when the engine is
started. It provides information
about tire pressures and the Tire
Pressure Monitoring System. When the Light is On Steady
This indicates that one or more
of the tires are significantly
underinflated.
A tire pressure message in the
Driver Information Center (DIC),
can accompany the light. See
Tire
Messages
on page 5‑25for
more information. Stop as soon as
possible, and inflate the tires to the
pressure value shown on the tire
loading information label. See Tire
Pressure
on page 10‑51for more
information.
When the Light Flashes First and
Then is On Steady
This indicates that there may be
a problem with the Tire Pressure
Monitor System. The light flashes
for about a minute and stays on
steady for the remainder of the
ignition cycle. This sequence
repeats with every ignition cycle.
See Tire Pressure Monitor
Operation
on page 10‑53for
more information.

Instruments and Controls 5-17
Engine Oil Pressure Light
{WARNING
Do not keep driving if the oil
pressure is low. The engine can
become so hot that it catches fire.
Someone could be burned. Check
the oil as soon as possible and
have the vehicle serviced.
Notice: Lack of proper engine
oil maintenance can damage the
engine. The repairs would not be
covered by the vehicle warranty.
Always follow the maintenance
schedule in this manual for
changing engine oil.
The oil pressure light should come
on briefly as the engine is started.
If it does not come on have the
vehicle serviced by your dealer.
If the light comes on and stays on, it
means that oil is not flowing through
the engine properly. The vehicle
could be low on oil and might
have some other system problem.
See your dealer.
Security Light
This light flashes when the security
system is activated.
For more information, see Anti-Theft
Alarm System on page 2‑9.
High-Beam on Light
The high-beam on light comes on
when the high-beam headlamps are
in use.
See Headlamp High/Low-Beam
Changer
on page 6‑3for more
information.

5-18 Instruments and Controls
Cruise Control Light
This light comes on whenever the
cruise control is set.
The light goes out when the cruise
control is turned off. SeeCruise
Control
on page 9‑57for more
information.
Information Displays
Driver Information
Center (DIC)
The Driver Information Center (DIC)
displays information such as the trip
odometer, personalization features,
and warning messages. The DIC
display is located on the instrument
panel cluster.
The DIC comes on when the ignition
is on.
If a problem is detected, a warning
message appears on the display.
Pressing and releasing the trip
odometer reset stem on the DIC
acknowledges some current
warnings or service messages.
Some messages only clear after the
required action has been taken.
The DIC has different modes which
can be accessed by pressing the
trip odometer reset stem on the DIC.
These modes are explained in the
following section. The DIC trip
odometer reset stem is located on the instrument panel cluster next to
the DIC display. To scroll through
the available functions, press and
release the reset stem.Trip Information
Odometer
The odometer is automatically
displayed on the DIC when you start
the vehicle. The odometer shows
the total distance the vehicle has
been driven in either miles for the
United States or kilometers for
Canada.
Trip Odometer
Press and release the reset stem
until TRIP appears on the DIC
display. The trip odometer shows
the current distance traveled since
the last reset of the trip odometer in
either miles for the United States or
kilometers for Canada.
To reset the trip odometer, press
and hold the reset stem until the
display returns to zero.

Instruments and Controls 5-21
The following are the available
modes:
RFA 1 (default):This mode flashes
the parking lamps when you press
the lock or unlock buttons on the
RKE transmitter.
RFA 2: This mode flashes the
parking lamps and sounds the horn
when you press the lock button on
the RKE transmitter. This mode also
flashes the parking lamps when you
press the unlock button on the RKE
transmitter.
RFA 3: This mode flashes the
parking lamps and sounds the horn
when you press the lock or unlock
buttons on the RKE transmitter.
RFA 4: This mode disables RKE
feedback. There will be no feedback
when you press the lock or unlock
buttons on the RKE transmitter.Vehicle Messages
Messages are displayed on the
DIC to notify the driver that the
status of the vehicle has changed
and that some action may be
needed by the driver to correct
the condition. Multiple messages
may appear one after another.
The messages are displayed for
several seconds each.
Some messages may not require
immediate action, but you should
press and release the trip odometer
reset stem to acknowledge that
you received the messages and to
clear them from the display. Each
message must be acknowledged
individually.
Some messages cannot be cleared
from the DIC display because they
are more urgent. These messages
require action before they can be
cleared. You should take any
messages that appear on the display seriously and remember that
clearing the messages only makes
the messages disappear, not correct
the problem.
The following are the possible
messages that can be displayed
and some information about them.
Battery Voltage and
Charging Messages
SERVICE CHARG (Charge)
SYS (System)
This message displays if there is a
problem with the battery charging
system. Under certain conditions,
the battery warning light may also
turn on in the instrument panel
cluster. See
Charging System Light
on page 5‑11. The battery will not
be charging at an optimal rate and
the vehicle will lose the ability to
enter the fuel economy mode.

5-22 Instruments and Controls
The vehicle is safe to drive,
however have the electrical system
checked by your dealer. Press
and release the reset stem to
acknowledge the message and
clear it from the display.
Brake System Messages
ABS (Antilock Brake System)
FAULT
This message displays if there is a
problem with the Antilock Brake
System (ABS). Check the ABS as
soon as possible and have the
vehicle serviced by your dealer.
SeeAntilock Brake System (ABS)
on page 9‑50andAntilock Brake
System (ABS) Warning Lighton
page 5‑15for more information.
Press and release the reset stem
to acknowledge the message and
clear it from the display.
BRAKES
This message displays if there is a
problem with the brakes. Check the
brakes as soon as possible and
have the vehicle serviced by your
dealer. See Brakes
on page 10‑26andBrake System Warning Lighton
page 5‑14for more information.
Press and release the reset stem
to acknowledge the message and
clear it from the display.
FLUID
This message displays if the brake
fluid is low. Check the brake fluid
as soon as possible and have the
vehicle serviced by your dealer.
See Brake Fluid
on page 10‑27for
more information. Press and release
the reset stem to acknowledge the
message and clear it from the
display.
HSA (Hill Start Assist) ON
This message displays when the
Hill Start Assist is enabled. See Hill
Start Assist (HSA)
on page 9‑52for
more information.
PARK BRK (Brake)
This message displays when the
parking brake is set. See Parking
Brake
on page 9‑51and Brake
System Warning Lighton
page 5‑14for more information.
The message clears from the
display after the parking brake is
released or by pressing and
releasing the reset stem.
Door Ajar Messages
DOORS
This message displays when one or
more of the doors is ajar. Check all
the doors on the vehicle to make
sure they are closed. The message
clears from the display after all of
the doors are closed.

Instruments and Controls 5-23
Engine Cooling System
Messages
AC (Air Conditioning) OFF
This message displays when the
engine coolant temperature is too
high and the air conditioning in
the vehicle needs to be turned off.
SeeEngine Overheating
on
page 10‑22and Climate Control
Systemson page 8‑1for more
information. This message displays
along with the ENG HOT message.
ENG (Engine) HOT
This message displays when the
engine coolant temperature is
hot. Check the engine coolant
temperature gauge. See Engine
Coolant Temperature Gauge
on
page 5‑9. Have the vehicle
serviced by your dealer as soon
as possible if you suspect the
engine is overheating. See Engine
Overheating
on page 10‑22for more
information.
Engine Oil Messages
CHANGE OIL
This message displays when the
oil needs to be changed. Check
the oil in the vehicle as soon as
possible and have the vehicle
serviced by your dealer. See Engine
Oil
on page 10‑9and Scheduled
Maintenanceon page 11‑2for
more information. Press and release
the reset stem to acknowledge the
message and clear it from the
display.
OIL
This message displays when the oil
pressure is low. See Engine Oil
Pressure Light
on page 5‑17and
Engine Oilon page 10‑9for more
information.
Engine Power Messages
REDUCED POWER
This message displays when the
vehicle's engine power is reduced.
Reduced engine power can affect
the vehicle's ability to accelerate.
If this message is on, but there
is no reduction in performance,
proceed to your destination.
The performance may be reduced
the next time the vehicle is driven.
The vehicle may be driven at a
reduced speed while this message
is on, but acceleration and speed
may be reduced. Anytime this
message stays on, the vehicle
should be taken to your dealer
for service as soon as possible.
Press and release the reset stem
to acknowledge the message and
clear it from the display.