ECU HUMMER H3 2009 Owner's Manual

{CAUTION
Airbags inate with great force,
faster than the blink of an eye.
Anyone who is up against, or very
close to, any airbag when it
inates can be seriously injured or
killed. Do not sit unnecessarily
close to the airbag, as you would
be if you were sitting on the edge
of your seat or leaning forward.
Safety belts help keep you in
position before and during a
crash. Always wear your safety
belt, even with airbags. The driver
should sit as far back as possible
while still maintaining control of
the vehicle.
Occupants should not lean on or
sleep against the door or side
windows in seating positions with
seat-mounted side impact airbags
and/or roof-rail airbags.
{CAUTION
Children who are up against, or
very close to, any airbag when it
inates can be seriously injured or
killed. Airbags plus lap-shoulder
belts offer protection for adults
and older children, but not for
young children and infants.
Neither the vehicle’s safety belt
system nor its airbag system is
designed for them. Young children
and infants need the protection
that a child restraint system can
provide. Always secure children
properly in your vehicle. To read
how, seeOlder Children on
page 1-25orInfants and Young
Children on page 1-28.There is an airbag readiness light
on the instrument panel cluster,
which shows the airbag symbol.
The system checks the airbag
electrical system for malfunctions.
The light tells you if there is an
electrical problem. SeeAirbag
Readiness Light on page 3-25for
more information.
1-48 Seats and Restraint System

The roof-rail airbags for the driver,
right front passenger, and second
row outboard passengers are in the
ceiling above the side windows.
{CAUTION
If something is between an
occupant and an airbag, the
airbag might not inate properly or
it might force the object into that
person causing severe injury or
even death. The path of an
inating airbag must be kept
clear. Do not put anything
between an occupant and an
airbag, and do not attach or put
anything on the steering wheel
hub or on or near any other
airbag covering.
Do not use seat accessories that
block the ination path of a
seat-mounted side impact airbag.
Never secure anything to the roof
of a vehicle with roof-rail airbags
by routing a rope or tie down
through any door or window
opening. If you do, the path of an
inating roof-rail airbag will be
blocked.
When Should an Airbag
Inate?
Frontal airbags are designed to
inate in moderate to severe frontal
or near-frontal crashes to help
reduce the potential for severe
injuries mainly to the driver’s or right
front passenger’s head and chest.
However, they are only designed to
inate if the impact exceeds a
predetermined deployment
threshold. Deployment thresholds
are used to predict how severe a
crash is likely to be in time for the
airbags to inate and help restrain
the occupants.
Whether the frontal airbags will or
should deploy is not based on
how fast your vehicle is traveling.
It depends largely on what you
hit, the direction of the impact,
and how quickly your vehicle
slows down. Driver Side shown, Passenger
Side similar
1-50 Seats and Restraint System

Passenger Sensing
System
The vehicle has a passenger sensing
system for the right front passenger
position. The passenger airbag
status indicator will be visible on the
instrument panel when the vehicle
is started.
The words ON and OFF, or the
symbol for on and off, are visible
during the system check. When the
system check is complete, the
word ON or OFF, or the symbol foron or off, will be visible. See
Passenger Airbag Status Indicator
on page 3-26.
The passenger sensing system will
turn off the right front passenger
frontal airbag and seat-mounted side
impact airbag (if equipped) under
certain conditions. The driver
airbags and the roof-rail airbags are
not affected by the passenger
sensing system.
The passenger sensing system
works with sensors that are part of
the right front passenger seat and
safety belt. The sensors are
designed to detect the presence of a
properly-seated occupant and
determine if the right front passenger
frontal airbag and seat-mounted side
impact airbag (if equipped) should be
enabled (may inate) or not.
According to accident statistics,
children are safer when properly
secured in a rear seat in the
correct child restraint for their
weight and size.We recommend that children be
secured in a rear seat, including: an
infant or a child riding in a rear-facing
child restraint; a child riding in a
forward-facing child seat; an older
child riding in a booster seat; and
children, who are large enough,
using safety belts.
A label on the sun visor says,
“Never put a rear-facing child seat
in the front.” This is because the risk
to the rear-facing child is so great,
if the airbag deploys.
{CAUTION
A child in a rear-facing child
restraint can be seriously injured or
killed if the right front passenger
airbag inates. This is because
the back of the rear-facing child
restraint would be very close to
the inating airbag. A child in a
forward-facing child restraint can
(Continued) United States
Canada
1-54 Seats and Restraint System

CAUTION (Continued)
be seriously injured or killed if
the right front passenger airbag
inates and the passenger seat
is in a forward position.
Even if the passenger sensing
system has turned off the right
front passenger frontal airbag
and seat-mounted side impact
airbag (if equipped), no system is
fail-safe. No one can guarantee
that an airbag will not deploy under
some unusual circumstance, even
though the airbag(s) are off.
Secure rear-facing child
restraints in a rear seat, even
if the airbag(s) are off. If you
secure a forward-facing child
restraint in the right front seat,
always move the front passenger
seat as far back as it will go. It is
better to secure the child restraint
in a rear seat.The passenger sensing system is
designed to turn off the right
front passenger frontal airbag if:The right front passenger seat is
unoccupied.
The system determines that an
infant is present in a rear-facing
infant seat.
The system determines that a
small child is present in a
child restraint.
The system determines that a
small child is present in a
booster seat.
A right front passenger takes
his/her weight off of the seat
for a period of time.
The right front passenger seat is
occupied by a smaller person,
such as a child who has
outgrown child restraints.
Or, if there is a critical problem
with the airbag system or the
passenger sensing system.When the passenger sensing
system has turned off the right
front passenger frontal airbag and
seat-mounted side impact airbag
(if equipped), the off indicator will
light and stay lit to remind you
that the airbag or airbags are off.
SeePassenger Airbag Status
Indicator on page 3-26.
The passenger sensing system is
designed to turn on (may inate) the
right front passenger frontal airbag
and seat-mounted side impact airbag
(if equipped) anytime the system
senses that a person of adult size
is sitting properly in the right front
passenger seat.
When the passenger sensing
system has allowed the airbag or
airbags to be enabled, the on
indicator will light and stay lit to
remind you that the airbag or
airbags are active.
Seats and Restraint System 1-55

For some children who have
outgrown child restraints and for
very small adults, the passenger
sensing system may or may not turn
off the right front passenger frontal
airbag and seat-mounted side
impact airbag (if equipped),
depending upon the person seating
posture and body build. Everyone
in the vehicle who has outgrown
child restraints should wear a safety
belt properly — whether or not
there is an airbag for that person.
{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.
If the On Indicator is Lit for a
Child Restraint
If a child restraint has been installed
and the on indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from
the vehicle.
3. Remove any additional items
from the seat such as blankets,
cushions, seat covers, seat
heaters, or seat massagers.
4. Reinstall the child restraint
following the directions provided
by the child restraint manufacturer
and refer toSecuring a Child
Restraint in the Right Front Seat
Position on page 1-43.5. If, after reinstalling the child
restraint and restarting the
vehicle, the on indicator is still lit,
turn the vehicle off. Then slightly
recline the vehicle seatback
and adjust the seat cushion, if
adjustable, to make sure that the
vehicle seatback is not pushing
the child restraint into the
seat cushion.
Also make sure the child restraint
is not trapped under the vehicle
head restraint. If this happens,
adjust the head restraint. See
Head Restraints on page 1-2.
6. Restart the vehicle.
If the on indicator is still lit with a
child present in a child restraint,
secure the child restraint in a rear
seat position in the vehicle and
check with your dealer/retailer.
1-56 Seats and Restraint System

seats, safety belts, the airbag
sensing and diagnostic module,
steering wheel, instrument panel,
roof-rail airbag modules, ceiling
headliner or pillar garnish trim,
overhead console, front sensors,
side impact sensors, rollover
sensor module, or airbag wiring
can affect the operation of the
airbag system.
In addition, the vehicle has a
passenger sensing system for the
right front passenger position,
which includes sensors that are
part of the passenger seat.
The passenger sensing system
may not operate properly if the
original seat trim is replaced with
non-GM covers, upholstery or
trim, or with GM covers,
upholstery or trim designed for a
different vehicle. Any object, such
as an aftermarket seat heater or a
comfort enhancing pad or device,
installed under or on top of theseat fabric, could also interfere
with the operation of the
passenger sensing system.
This could either prevent proper
deployment of the passenger
airbag(s) or prevent the
passenger sensing system from
properly turning off the passenger
airbag(s). SeePassenger
Sensing System on page 1-54.
If you have any questions, call
Customer Assistance. The phone
numbers and addresses for
Customer Assistance are in
Step Two of the Customer
Satisfaction Procedure in this
manual. SeeCustomer
Satisfaction Procedure on
page 7-1.
If the vehicle has rollover
roof-rail airbags, seeDifferent
Size Tires and Wheels on
page 5-61for additional
important information.Q:Because I have a disability,
I have to get my vehicle
modied. How can I nd out
whether this will affect my
airbag system?
A:If you have questions, call
Customer Assistance. The phone
numbers and addresses for
Customer Assistance are in
Step Two of the Customer
Satisfaction Procedure in this
manual. SeeCustomer
Satisfaction Procedure on
page 7-1.
In addition, your dealer/retailer and
the service manual have information
about the location of the airbag
sensors, sensing and diagnostic
module and airbag wiring.
Seats and Restraint System 1-59

Features and
Controls
Keys
Keys...................................2-2
Remote Keyless Entry
(RKE) System...................2-3
Remote Keyless Entry
(RKE) System Operation. . .2-4
Doors and Locks
Door Locks.........................2-5
Power Door Locks..............2-6
Programmable Automatic
Door Locks........................2-6
Rear Door Security Locks. . . .2-6
Lockout Protection..............2-7
Tailgate..............................2-7
Swing-gate.........................2-9
Windows
Windows.............................2-9
Power Windows................2-10
Sun Visors........................2-11
Theft-Deterrent Systems
Theft-Deterrent Systems. . . .2-11
Content Theft-Deterrent.....2-11
Passlock®(U.S. Only).......2-12
PASS-Key®III+ Electronic
Immobilizer......................2-13
PASS-Key®III+ Electronic
Immobilizer Operation
(Canada Only)
.................2-14
Starting and Operating
Your Vehicle
New Vehicle Break-In.......2-15
Ignition Positions...............2-16
Retained Accessory
Power (RAP)...................2-17
Starting the Engine...........2-17
Engine Coolant Heater......2-19
Automatic Transmission
Operation........................2-19
Manual Transmission
Operation........................2-22
Full-Time Four-Wheel
Drive...............................2-24
Parking Brake...................2-28
Shifting Into Park
(Automatic
Transmission)
..................2-29
Shifting Out of Park
(Automatic
Transmission)
..................2-30
Parking the Vehicle
(Manual Transmission). . . .2-31Parking Over Things
That Burn........................2-31
Engine Exhaust.................2-31
Running the Vehicle
While Parked..................2-32
Mirrors
Automatic Dimming
Rearview Mirror...............2-33
Compass..........................2-34
Outside Power Mirrors......2-35
Outside Convex Mirror......2-35
Object Detection
Systems
Rear Vision
Camera (RVC)................2-36
OnStar®System
OnStar®System................2-39
Features and Controls 2-1

From the inside, use the manual lock
levers or power door lock switch.
Power Door Locks
The power door lock switches are
located on the driver’s and the front
passenger doors.Press L (lock) to lock all the doors
at once. To unlock all the doors,
press U (Unlock).
Programmable Automatic
Door Locks
With an automatic transmission,
the vehicle is pre-programmed to
automatically lock the doors when
shifted out of P (Park). All doors
unlock when the vehicle is shifted
back into P (Park).
With a manual transmission, the
vehicle is pre-programmed to
automatically lock the doors when
the vehicle speed reached 15 mph
(24 km/h). Removing the key
from the ignition unlocks the doors.
To program the automatic door
locks, see “Automatic Door Locks”
underDIC Operation and Displays
on page 3-34.
Rear Door Security Locks
Each rear door can be locked so it
cannot be opened from the inside.
The rear door security lock is
located on the inside edge of
each rear door.
To engage a security lock:
1. Open one of the rear doors.
2. Use the ignition key to turn the
lock toward the front of the
vehicle.
3. Close the door.
4. Repeat these steps on the
other rear door.
Driver’s side shown
2-6 Features and Controls

To open a rear door when the
security lock is set, unlock the door
and open the door from the outside.
To disengage a security lock:
1. Open one of the rear doors.
2. Use the ignition key to turn the
lock to the vertical position.
3. Close the door.
4. Repeat these steps on the other
rear door.
Lockout Protection
This feature protects against locking
the key in the vehicle when it is
in the ignition.
A chime sounds as an alert to
indicate that the key has been left in
the ignition. When the power door
lock switch is pressed, a door is
open, and the key is in the ignition
all of the doors lock and then
the driver’s door unlocks.
Tailgate
{CAUTION
It is extremely dangerous to ride
on the tailgate, even when the
vehicle is operated at low speeds.
People riding on the tailgate can
easily lose their balance and fall
in response to vehicle maneuvers.
Falling from a moving vehicle may
result in serious injuries or death.
Do not allow people to ride on the
tailgate. Be sure everyone in your
vehicle is in a seat and using a
safety belt properly.Open the tailgate by pulling up on
the outside handle while pulling
the tailgate down.
When putting the tailgate up,
be sure it latches securely.
Features and Controls 2-7

Removing the Tailgate
To remove the tailgate:
1. Open the tailgate fully and
remove the retainer clip from the
driver’s side hinge.
It is recommended that the
retainer clip be stored in a safe
place, like the glove box.2. Lift up slightly on the entire
tailgate assembly.
Remove the retaining cables
from both sides of the pickup box
by pulling the clips away from
the bolt heads while pushing the
cable bracket forward. When
the larger part of the hole on the
bracket is over the bolt, slide
the bracket off of the bolt.
3. With the tailgate partially down,
lift up on the passenger’s side
and pull the tailgate toward you,
then move the tailgate to the
right to release the driver’s side.
Reverse the procedure to reinstall
the tailgate. Make sure it is secure.To partially lower the tailgate:
1. With the tailgate fully open, lift up
slightly on the entire tailgate
assembly.
2. Remove the retaining cable from
the passenger side of the pickup
box by pulling the clip away
from the bolt head while pushing
the cable bracket forward.
When the larger part of the hole
on the bracket is over the bolt,
slide the bracket off of the bolt.
Tailgate Partially Down
2-8 Features and Controls