2009 HUMMER H3 check engine

To avoid setting off the alarm by
accident:
Lock the vehicle with the manual
door lock lever, the power door
lock switch, or the key, after
the doors are closed.
Unlock the doors by pressing the
unlock button on the RKE
transmitter or by contacting
OnStar. Unlocking a door any
other way activates the alarm.
Press unlock on the RKE
transmitter, start the vehicle with
the correct key, or have OnStar
unlock the doors to turn the alarm
off. The alarm does not stop if
a door is unlocked any other way.
Testing the Alarm
To test the alarm:
1. From inside the vehicle, lock the
doors with the RKE transmitter.
2. Unlock the door with the manual
door lock and open the door.
The pre-alarm should sound
followed by the full alarm about
10 seconds later.
3. Press the unlock button on the
RKE transmitter or start the
engine to turn the alarm off.
If the alarm does not sound but the
lights ash, check to see if the
horn works. The horn fuse could be
blown. To replace the fuse, see
Fuses and Circuit Breakers
on page 5-91.
If the alarm does not sound or
the front turn signal lamps do not
ash, see your dealer/retailer
for service.
Passlock®(U.S. Only)
Passlock®is a passive
theft-deterrent system that enables
fuel if the vehicle is started with
a valid key. If an incorrect key
is used or the ignition lock cylinder
is tampered with, the fuel system
is disabled and the vehicle does
not start.
The security light turns off
approximately ve seconds after
the engine is started. SeeSecurity
Light on page 3-33.
If the engine stalls and the security
light ashes, wait about 10 minutes
until the light stops ashing
before trying to restart the engine.
Release the key from START
as soon as the engine starts.
If the engine does not start after
three tries, the vehicle needs
service.
2-12 Features and Controls

PASS-Key®III+ Electronic
Immobilizer Operation
(Canada Only)
This vehicle has a passive
theft-deterrent system.
The system is automatically armed
when the key is removed from
the ignition.
The system is automatically
disarmed when the key is turned
to ON/RUN.
You do not have to manually arm or
disarm the system.
The security light comes on if there
is a problem with arming or
disarming the theft-deterrent system.
The key uses a transponder that
matches an immobilizer control unit
in the vehicle. Only the correct
key starts the vehicle. If the key is
ever damaged, the vehicle may
not start.When trying to start the vehicle,
if the engine does not start and
the security light comes on,
there may be a problem with the
theft-deterrent system. Turn the
ignition off and try again.
If the engine still does not start, and
the key appears to be undamaged,
try another ignition key. Check
the fuse. SeeFuses and Circuit
Breakers on page 5-91. If the engine
still does not start with the other
key, the vehicle needs service.
If the vehicle does start, the rst
key may be faulty. See your
dealer/retailer who can service the
theft-deterrent system and have
a new key made.
It is possible for the theft-deterrent
system decoder to learn the
transponder value of a new or
replacement key. Up to 10 keys can
be programmed for the vehicle.
The following procedure is for
programming additional keys only.Canadian Owners:If the keys
are lost or damaged, only a
dealer/retailer can service the
theft-deterrent system to have new
ones made. Two current driver’s
keys are required to program
additional keys.
To program a new key:
1. Verify that the new key has
PK3+ stamped on it.
2. Insert the current driver’s key in
the ignition and start the engine.
If the engine does not start see
your dealer/retailer for service.
3. After the engine has started,
turn the key to LOCK/OFF,
and remove the key.
4. Insert the second current driver’s
key in the ignition and start the
engine within ten seconds of
removing the previous key. If the
engine does not start see your
dealer/retailer for service.
2-14 Features and Controls

Starting Procedure
1. With your foot off the accelerator
pedal, turn the ignition key to
START. When the engine starts,
let go of the key. The idle speed
will go down as the engine
warms. Do not race the engine
immediately after starting it.
Operate the engine and
transmission gently to allow
the oil to warm up and lubricate
all moving parts.
The vehicle has a
Computer-Controlled Cranking
System. This feature assists
in starting the engine and
protects components. If the
ignition key is turned to the
START position, and then
released when the engine
begins cranking, the engine
will continue cranking for a
few seconds or until the vehicle
starts. If the engine does not
start and the key is held in
START for many seconds,
cranking will be stopped after15 seconds to prevent cranking
motor damage. 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 ooded
with too much gasoline. Push the
accelerator pedal all the way
to the oor 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 briey 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/retailer. If you do not,
the engine might not perform
properly. Any resulting damage
would not be covered by the
vehicle warranty.
2-18 Features and Controls

Warning Lights,
Gages, and Indicators
Warning lights and gages can
signal that something is wrong
before it becomes serious enough
to cause an expensive repair or
replacement. Paying attention to the
warning lights and gages could
prevent injury.
Warning lights come on when there
may be or is a problem with one
of the vehicle’s functions. Some
warning lights come on briey when
the engine is started to indicate
they are working.
Gages can indicate when there may
be or is a problem with one of the
vehicle’s functions. Often gages and
warning lights work together to
indicate a problem with the vehicle.When one of the warning lights
comes on and stays on while
driving, or when one of the gages
shows there may be a problem,
check the section that explains what
to do. Follow this manual’s advice.
Waiting to do repairs can be
costly and even dangerous.
3-22 Instrument Panel

Speedometer and
Odometer
The speedometer shows the speed
in both miles per hour (mph) and
kilometers per hour (km/h).
The odometer shows how far the
vehicle has been driven, in
either miles (used in the United
States) or kilometers (used in
Canada).
The odometer mileage can be
checked without the vehicle running
by pressing the trip information
stem. See “Odometer” underDIC
Operation and Displays on
page 3-34for more information.
If the cluster is replaced the
new one will automatically detect
and update the vehicle’s
accumulated mileage.
Trip Odometer
The vehicle has a trip odometer that
indicates how far the vehicle has
been driven since the trip odometer
was last set to zero.
See “Trip Odometer” underDIC
Operation and Displays on
page 3-34for more information.
Tachometer
The tachometer displays the
engine speed in revolutions per
minute (rpm).
Notice:If the engine is operated
while the tachometer is in the
shaded warning area, the vehicle
could be damaged, and the
damages would not be covered
by the vehicle warranty. Do
not operate the engine with the
tachometer in the shaded
warning area.
Safety Belt Reminders
Driver Safety Belt Reminder
Light
When the engine is started, a chime
sounds for several seconds to
remind the driver to fasten their
safety belt, unless it is already
buckled.
The safety belt light comes on and
stays on for several seconds,
then ashes for several more.
This chime and light are repeated if
the driver safety belt remains
unbuckled and the vehicle is in
motion. If the driver safety belt is
already buckled, neither the
chime nor the light comes on.
3-24 Instrument Panel

Passenger Safety Belt
Reminder Light
Several seconds after the engine is
started, a chime sounds for several
seconds to remind the front
passenger to buckle their safety belt.
This only occurs if the passenger
airbag is enabled. SeePassenger
Sensing System on page 1-54for
more information. The passenger
safety belt light, located on the
instrument panel, comes on and
stays on for several seconds and
then ashes for several more.
This chime and light are repeated if
the passenger remains unbuckled
and the vehicle is in motion.If the passenger safety belt is
buckled before the engine is started,
neither the chime nor the light
comes on.
The front passenger safety belt
warning light and chime may turn on
if an object is put on the seat
such as a briefcase, handbag,
grocery bag, laptop or other
electronic device. To turn off the
warning light and or chime, remove
the object from the seat or buckle
the safety belt
Airbag Readiness Light
There is an airbag readiness light on
the instrument panel cluster,
which shows the airbag symbol. The
system checks the airbag’s
electrical system for malfunctions.
The light indicates if there is an
electrical problem. The system
check includes the airbag sensor,the pretensioners, the airbag
modules, the wiring and the crash
sensing and diagnostic module.
For more information on the airbag
system, seeAirbag System on
page 1-46.
This light comes on when the
vehicle is started, and ashes for a
few seconds. The light goes out
when the system is ready.
Instrument Panel 3-25

If the airbag readiness light stays on
after the vehicle is started or
comes on while driving, the airbag
system may not work properly. Have
the vehicle serviced right away.
{CAUTION
If the airbag readiness light stays
on after the vehicle is started or
comes on while driving, it means
the airbag system might not be
working properly. The airbags in
the vehicle might not inate in a
crash, or they could even inate
without a crash. To help avoid
injury, have the vehicle serviced
right away.
The airbag readiness light should
ash for a few seconds when
the engine is started. If the light
does not come on then, have it xed
immediately. If there is a problem
with the airbag system, an
airbag Driver Information Center(DIC) message may also come on.
SeeDIC Warnings and Messages
on page 3-37for more information.
Passenger Airbag
Status Indicator
The vehicle has the passenger
sensing system. SeePassenger
Sensing System on page 1-54
for important safety information. The
instrument panel has a passenger
airbag status indicator.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
and seat-mounted side impact
airbag (if equipped).
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 and
seat-mounted side impact airbag (if
equipped) are enabled (may
inate).
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 and
seat-mounted side impact airbag (if
equipped). United States
Canada
3-26 Instrument Panel

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/retailer for service.
{CAUTION
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.
SeeAirbag Readiness Light on
page 3-25for more information,
including important safety
information.
Charging System Light
This light comes on briey when the
ignition key is turned, but the
engine is not running, as a check to
show it is working.
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. SeeDIC Warnings
and Messages on page 3-37
for 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.
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.
SeeManual Transmission Operation
on page 2-22for more information.
Brake System Warning
Light
The vehicle’s hydraulic brake
system is divided into two parts. If
one part is not working, the
other part can still work and stop
the vehicle. For good braking
though, both parts need to be
working well.
Instrument Panel 3-27