2008 HUMMER H2 ECO mode

Safety Belt Pretensioners
Your vehicle has safety belt pretensioners for front
outboard occupants. Although you cannot see them,
they are part of the safety belt assembly. They can help
tighten the safety belts during the early stages of a
moderate to severe frontal, near frontal, or rear crash if
the threshold conditions for pretensioner activation
are met. And, if your vehicle has side impact airbags,
safety belt pretensioners can help tighten the safety
belts in a side crash or a rollover event.
Pretensioners work only once. If they activate in a
crash, you will need to get new ones, and probably other
new parts for your safety belt system. SeeReplacing
Restraint System Parts After a Crash on page 1-77.
Rear Safety Belt Comfort Guides
Rear shoulder belt comfort guides may provide added
safety belt comfort for older children who have outgrown
booster seats and for some adults. When installed on
a shoulder belt, the comfort guide positions the belt
away from the neck and head.
There is one guide for each outboard position in the
second and third row seat. Here is how to install
the comfort guide to the shoulder belt:
1. Remove the guide from its storage pocket on the
side of the seat.
1-32

For SUV models, there are exposed metal anchors for
the second row center and passenger side seating
positions.
For SUT models, there are exposed metal anchor for
the second row center seating position.
For SUV models, the top tether anchors are located at
the bottom rear of the seat cushion for each position
in the second row. Be sure to use the anchor located
nearest to the seating position where the child restraint
will be placed.
For SUT models, the top tether anchor is located at the
bottom rear of the seat cushion for the center position
in the second row. You may need to fold the seatback of
the passenger side seat forward in order to access
this anchor.Second Row Seats — SUV
1-50

For SUV models with third row seating, the top tether
anchor is located at the bottom rear of the seat cushion
for the passenger side seating position in the third row.Do not secure a child restraint in a position without a
top tether anchor if a national or local law requires that
the top tether be attached, or if the instructions that
come with the child restraint say that the top tether
must be attached.
Accident statistics show that children are safer if they
are restrained in the rear rather than the front seat.
SeeWhere to Put the Restraint on page 1-46for
additional information. Second Row Seats — SUT
Third Row Seat — SUV
1-51

What Makes an Airbag Inate?
In a deployment event, the sensing system sends an
electrical signal triggering a release of gas from the
inator. Gas from the inator lls the airbag causing the
bag to break out of the cover and deploy. The inator,
the airbag, and related hardware are all part of the
airbag module.
Frontal airbag modules are located inside the steering
wheel and instrument panel. For vehicles with roof-rail
airbags, there are airbag modules in the ceiling of the
vehicle, near the side windows that have occupant
seating positions.
How Does an Airbag Restrain?
In moderate to severe frontal or near frontal collisions,
even belted occupants can contact the steering wheel
or the instrument panel. In moderate to severe side
collisions, even belted occupants can contact the inside
of the vehicle.
Airbags supplement the protection provided by safety
belts. Frontal airbags distribute the force of the
impact more evenly over the occupant’s upper body,
stopping the occupant more gradually. Roof-rail airbags
distribute the force of the impact more evenly over
the occupant’s upper body.Rollover capable roof-rail airbags are designed to help
contain the head and chest of occupants in the
outboard seating positions in the rst, second, and third
rows, if equipped with a third row seat. The rollover
capable roof-rail airbags are designed to help reduce the
risk of full or partial ejection in rollover events, although
no system can prevent all such ejections.
But airbags would not help in many types of collisions,
primarily because the occupant’s motion is not
toward those airbags. SeeWhen Should an Airbag
Inflate? on page 1-69for more information.
Airbags should never be regarded as anything more
than a supplement to safety belts.What Will You See After an Airbag
Inates?
After the frontal airbags inate, they quickly deate, so
quickly that some people may not even realize an
airbag inated. Roof-rail airbags may still be at least
partially inated for some time after they deploy.
Some components of the airbag module may be hot for
several minutes. For location of the airbag modules,
seeWhat Makes an Airbag Inflate? on page 1-70.
1-70

3. Press either one of the two power Midgate latch
release buttons. The Midgate will move slightly
forward from its closed position. The latch release
buttons operate while the ignition is in ON/RUN,
ACC/ACCESSORY, in RAP mode, or up to
ten minutes after removing the key. If necessary,
press the global express-down button to reactivate
the release buttons for an additional ten minutes.
4. Pull the Midgate inward and down to its fully
lowered position.
5. Flip the auxiliary panel on the top of the Midgate
into position to bridge the gap created by the
hinges in the Midgate. There are two nger holds
on the panel.
Raising the Midgate
To raise the Midgate, do the following:
1. Fold the auxiliary panel back into the exterior of the
Midgate. The panel should snap loudly back into
position which means it is secure.
2. Reverse the steps for lowering the Midgate listed
previously. The Midgate must be fully latched on
both sides before the window can be raised.
3. Press the top part of the Midgate window switch to
express-up the window. To stop the window, press
the switch a second time.
2-15

Midgate Window
K(Midgate Window):On vehicles with a Midgate,
the switch to operate the window is located on the
instrument panel to the left of the steering wheel.
SeeInstrument Panel Overview on page 3-4.
ª:Press to express-down the window.
y:Press to express-up the window.
Press the top or bottom of the switch a second time to
stop the window
The window switch will operate while the ignition is in
ON/RUN or ACC/ACCESSORY, or while Retained
Accessory Power (RAP) is active. SeeRetained
Accessory Power (RAP) on page 2-29.
The window can also be operated using the global
window buttons. See “Global Window Feature”
previously.
{CAUTION:
If express override is activated, the midgate
window will not reverse automatically. You or
others could be injured and the window could
be damaged. Before you use express override,
make sure that all people and obstructions are
clear of the midgate window path.
Midgate Window Express Override Mode
If an obstruction or weather condition such as severe
icing stops the window as it is moving upward, the
window will automatically reverse to a partially open
position. The window will return to normal operation
once the obstruction or condition is removed.
2-22

The window auto-reversal function can be overridden in
the express override mode. To override, the window
must be operated manually by pressing and holding the
Midgate window switch or the global window button.
This must be done within two seconds after the Midgate
window has stopped at a partially open position.
The express override mode only works immediately
following a window auto-reversal. Window express
functions will not work while in this mode.
Midgate Window Error/Jog Mode
If the Midgate window has sensed conditions which may
lead to damage or malfunction of the window system,
the window will automatically go into Error/Jog mode.
In this mode, window express functions will not
work. The window can only be operated manually by
pressing the Midgate window switch or the global
window button. The window will move slightly and stop.
Press and hold the window switch or global window
button to continue to close the window a small amount
at a time.
To Exit Error/Jog Mode
1. Ensure normal Midgate window operating conditions
have begun.
2. Press and hold the Midgate window down switch
approximately one second to start window
express-down.
3. Release the window down switch and allow the
window to fully open.
Do not use any window switches once window
movement has started.
4. Press the Midgate window up switch and visually
conrm that the express-up has been completed.
Sun Visors
Swing the sun visor down to block glare. Swing the sun
visor to the side to cover the side window.
Illuminated Visor Vanity Mirrors
Swing the sun visor down and lift the mirror cover to
turn the lamps on.
2-23

To rock your vehicle back and forth to get out of snow,
ice, or sand without damaging the transmission, see
If Your Vehicle is Stuck in Sand, Mud, Ice, or Snow on
page 4-39.
NEUTRAL (N):In this position, the engine does not
connect with the wheels. To restart when you are
already moving, use NEUTRAL (N) only. Also, use
NEUTRAL (N) when your vehicle is being towed.
{CAUTION:
Shifting into a drive gear while the engine is
running at high speed is dangerous. Unless
your foot is rmly on the brake pedal, your
vehicle could move very rapidly. You could
lose control and hit people or objects. Do not
shift into a drive gear while your engine is
running at high speed.
Notice:Shifting out of PARK (P) or NEUTRAL (N)
with the engine running at high speed may damage
the transmission. The repairs would not be covered
by your warranty. Be sure the engine is not running
at high speed when shifting your vehicle.DRIVE (D):This position is for normal driving. It
provides the best fuel economy for your vehicle. If you
need more power for passing, and you are:
Going less than about 35 mph (55 km/h), push the
accelerator pedal about halfway down.
Going about 35 mph (55 km/h) or more, push the
accelerator all the way down.
By doing this, the vehicle shifts down to the next gear
and has more power.
DRIVE (D) can be used when towing a trailer, carrying a
heavy load, driving on steep hills, or for off-road
driving. You may want to shift the transmission to a
lower gear selection if the transmission shifts too often.
Downshifting the transmission in slippery road
conditions could result in skidding, see Skidding under
Loss of Control on page 4-12.
MANUAL MODE (M):This position lets drivers select
the range of gears appropriate for current driving
conditions. If your vehicle has this feature, see Driver
Shift Control (DSC) later in this section.
Notice:Spinning the tires or holding the vehicle in
one place on a hill using only the accelerator pedal
may damage the transmission. The repair will not be
covered by your warranty. If you are stuck, do not
spin the tires. When stopping on a hill, use the brakes
to hold the vehicle in place.
2-33