light HUMMER H3 2009 Workshop Manual

If the warning light comes on, there
could be a brake problem. Have
the brake system inspected
right away.
This light comes on briey when the
ignition key is turned to ON/RUN.
If it does not, have it xed so it
will be ready to warn if there is a
problem.
When the ignition is on, the brake
system warning light comes on
when the parking brake is set. See
Parking Brake on page 2-28for
more information. The light stays on
if the parking brake does not
release fully. If it stays on after the
parking brake is fully released, it
means there is a brake problem.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 oor. It can
take longer to stop. If the light is
still on, have the vehicle towed for
service. SeeTowing Your Vehicle
on page 4-40.
{CAUTION
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 briey when the engine is started.
If it does not, have the vehicle
serviced by your dealer/retailer. 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 United States
Canada
3-28 Instrument Panel

brakes and there is a problem with
the regular brakes. SeeBrake
System Warning Light on page 3-27.
For vehicles with a Driver
Information Center (DIC), seeDIC
Warnings and Messages on
page 3-37for all brake related DIC
messages.
StabiliTrak®/Traction
Control System (TCS)
Warning Light
The StabiliTrak system or the
Traction Control System (TCS)
indicator/warning light comes
on briey while starting the engine.
If it does not, have the vehicle
serviced by your dealer/retailer. If
the system is working normally
the indicator light will then go off.The indicator/warning light ashes
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.
SeeStabiliTrak
®System on
page 4-6andTraction Control
System (TCS) on page 4-7for more
information
Engine Coolant
Temperature Gage
This gage shows the engine coolant
temperature.
If the gage pointer is in the shaded
area of the gage, the engine is
too hot. It means that the engine
coolant has overheated. If the
vehicle has been operating under
normal driving conditions, pull off the
road, stop your vehicle and turn
off the engine as soon as possible.
SeeEngine Overheating on
page 5-27for more information.
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Instrument Panel 3-29

Tire Pressure Light
The tire pressure light should come
on briey as the engine is started.
If it does not, have the vehicle
service by your dealer/retailer. 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 signicantly
underinated.
A tire pressure message in the
Driver Information Center (DIC),
may accompany the light. SeeDIC
Warnings and Messages on
page 3-37for more information.
Stop and check the tires as soon as
it is safe to do so. If underinated,
inate to the proper pressure.
SeeTires on page 5-44for 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 ashes
for about a minute and stays
on steady for the remainder of the
ignition cycle. This sequence
will repeat with every ignition cycle.
SeeTire Pressure Monitor System
on page 5-52for more information.
Malfunction
Indicator Lamp
Check Engine Light
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/retailer.
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,
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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:Modications 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. Modications 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 5-3.This light comes on during a
malfunction in one of two ways:
Light Flashing:A misre condition
has been detected. A misre
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 ash, 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 ashing,
follow the previous steps and
see your dealer/retailer 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 by:
Make sure the fuel cap is fully
installed. SeeFilling the Tank
on page 5-7. 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.
Instrument Panel 3-31

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,
misring, 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.
SeeGasoline Octane on
page 5-5.
If none of the above have made the
light turn off, your dealer/retailer
can check the vehicle. The
dealer/retailer has the proper test
equipment and diagnostic tools to x
any mechanical or electrical
problems that might have
developed.Emissions Inspection and
Maintenance Programs
Some state/provincial and local
governments have or might begin
programs to inspect the emission
control equipment on the vehicle.
Failure to pass this inspection could
prevent getting a vehicle
registration.
Here are some things to know to
help the vehicle pass an inspection:
The vehicle will not pass this
inspection if the check engine
light is on with the engine
running, or if the key is in the
ON/RUN and the light is not on.
The vehicle will not pass
this inspection if the OBD II
(on-board diagnostic) system
determines that critical emission
control systems have not
been completely diagnosed by
the system. The vehicle would be
considered not ready for
inspection. This can happen if
the battery has recently been
replaced or if the battery has rundown. The diagnostic system is
designed to evaluate critical
emission control systems during
normal driving. This can take
several days of routine driving. If
this has been done and the
vehicle still does not pass the
inspection for lack of OBD II
system readiness, your
dealer/retailer can prepare the
vehicle for inspection.
Oil Pressure Light
{CAUTION
Do not keep driving if the oil
pressure is low. The engine can
become so hot that it catches re.
Someone could be burned. Check
the oil as soon as possible and
have the vehicle serviced.
3-32 Instrument Panel

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 briey as the engine is started.
If it does not come on have the
vehicle serviced by your
dealer/retailer.
If the light comes on and stays on, it
means that oil is not owing
through the engine properly. The
vehicle could be low on oil and
might have some other system
problem.Security Light
For information regarding this light
and the vehicle’s security system,
seeContent Theft-Deterrent
on page 2-11.
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 3-9for more
information.
Highbeam On Light
This light comes on when the
high-beam headlamps are in use.
SeeHeadlamp High/Low-Beam
Changer on page 3-7for more
information.
Fuel Gage
The fuel gage indicates about how
much fuel there is remaining in
the fuel tank. The ignition must be
in ON/RUN.
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Instrument Panel 3-33

RFA 3:This mode ashes 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.
DIC Warnings and
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 toclear 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.
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 5-27andClimate Control
System on page 3-19for more
information. This message displays
along with the ENG HOT message.
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/retailer. SeeBrakes on
page 5-30andAntilock Brake
System (ABS) Warning Light on
page 3-28for 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/retailer. SeeBrakes on
page 5-30andBrake System
Warning Light on page 3-27for
more information. Press and release
the reset stem to acknowledge
the message and clear it from the
display.
Instrument Panel 3-37

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/retailer. SeeEngine Oil
on page 5-13andScheduled
Maintenance on page 6-4for more
information. Press and release
the reset stem to acknowledge the
message and clear it from the
display.
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.
ENG (Engine) HOT
This message displays when the
engine coolant temperature is
hot. Check the engine coolant
temperature gage. SeeEngine
Coolant Temperature Gage
on page 3-29. Have the vehicleserviced by your dealer/retailer as
soon as possible if you suspect
the engine is overheating. See
Engine Overheating on page 5-27
for more information.
FLUID
This message displays if the brake
uid is low. Check the brake
uid as soon as possible and have
the vehicle serviced by your
dealer/retailer. SeeBrakes on
page 5-30for more information.
Press and release the reset stem to
acknowledge the message and
clear it from the display.
FUEL CAP
This message displays if the
vehicle’s fuel cap is either off or
loose. Pull over as soon as possible
and check to see if the fuel cap is
secure. You may also see the check
engine light on the instrument
panel cluster. If the check engine
light does come on when the
fuel cap was loose, it may take a
few driving trips before the lightturns off. SeeMalfunction Indicator
Lamp on page 3-30for more
information if the light still remains
on. 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
Braking on page 4-3for more
information.
LOW FUEL
This message displays if the level of
fuel in the vehicle is low. Also
check the fuel gage. SeeFuel Gage
on page 3-33for more information.
Rell the fuel tank as soon as
possible.
LOW TIRE
On vehicles with the Tire Pressure
Monitor System (TPMS), this
message displays if a low tire
pressure is detected in any of the
vehicle’s tires. Press and release the
reset stem to acknowledge the
3-38 Instrument Panel

message and clear it from the
display. The message appears at
each ignition cycle until the tires are
inated to the correct ination
pressure. SeeTires on page 5-44
andInflation - Tire Pressure on
page 5-51for more information on
tires and the correct ination
pressures.
OIL
This message displays when the oil
pressure is low. SeeOil Pressure
Light on page 3-32andEngine
Oil on page 5-13for more
information.
PARK BRK (Brake)
This message displays when the
parking brake is set. SeeParking
Brake on page 2-28andBrake
System Warning Light on page 3-27
for more information. The message
clears from the display after the
parking brake is released or by
pressing and releasing the
reset stem.
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/retailer for service as soon as
possible. Press and release the
reset stem to acknowledge
the message and clear it from the
display.
SERV (Service) 4WD
(Four-Wheel Drive)
This message displays when there
is a problem with the transfer
case control system. Check the
transfer case on the vehicleand have it serviced by your
dealer/retailer. SeeFull-Time
Four-Wheel Drive on page 2-24for
more information about the
transfer case. Press and release the
reset stem to acknowledge the
message and clear it from the
display.
SERV (Service) TPM
(Tire Pressure Monitor)
On vehicles with the Tire Pressure
Monitor System (TPMS), this
message displays if a part on the
TPMS is not working properly.
The tire pressure light also ashes
and then remains on during the
same ignition cycle. SeeTire
Pressure Light on page 3-30.
Several conditions may cause this
message to appear. SeeTire
Pressure Monitor Operation on
page 5-54for more information. If
the warning comes on and stays on,
there may be a problem with the
TPMS. See your dealer/retailer.
Instrument Panel 3-39

SERV (Service) VEH (Vehicle)
This message displays if the
vehicle needs service. Have the
vehicle serviced by your
dealer/retailer as soon as possible.
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. SeeCharging System
Light on page 3-27. The battery will
not be charging at an optimal
rate and the vehicle will lose the
ability to enter the fuel economy
mode. The vehicle is safe to drive,
however have the electrical
system checked by your
dealer/retailer. Press and release
the reset stem to acknowledge
the message and clear it from the
display.
SERVICE STAB (Stability)
SYS (System)
This message displays if there is a
problem with the StabiliTrak®
system. Have the vehicle serviced
by your dealer/retailer. See
StabiliTrak
®System on page 4-6for
more information.
STAB (Stability)
SYS (System) OFF
This message displays when the
StabiliTrak®system is turned
off. SeeStabiliTrak®System on
page 4-6for more information.
TRAC (Traction) OFF
This message along with the
traction off light displays when the
Traction Control System (TCS)
is turned off by pressing the TCS
button. SeeStabiliTrak
®/Traction
Control System (TCS) Warning Light
on page 3-29andTraction Control
System (TCS) on page 4-7for
more information.
TRACTION FAULT
This message displays if there is a
problem with the Traction Control
System (TCS). Check the TCS
as soon as possible and have the
vehicle serviced by your
dealer/retailer. SeeTraction Control
System (TCS) on page 4-7for
more information. Press and release
the reset stem to acknowledge
the message and clear it from the
display.
TURN SIGNAL
This message displays when the
turn signal is on for about 0.75 miles
(1.2 km) of travel. Press and
release the reset stem to
acknowledge the message and
clear it from the display.
3-40 Instrument Panel