clutch HUMMER H3 2009 Owners Manual

If you leave the key in the
ACC/ACCESSORY or ON/RUN
position with the engine off,
the battery could be drained.
You may not be able to start the
vehicle if the battery is allowed
to drain for an extended period
of time.
(D) START:This is the position that
starts the engine. When the engine
starts, release the key. The ignition
switch returns to ON/RUN for driving.
A warning tone will sound when the
driver door is opened, the ignition
is in ACC/ACCESSORY or
LOCK/OFF and the key is in
the ignition.Retained Accessory
Power (RAP)
These vehicle accessories can be
used for up to 20 minutes after
the engine is turned off:
Audio System
Front Wipers
Power Windows
Sunroof (if equipped)
These features will work when
the key is in ON/RUN or
ACC/ACCESSORY. Once the key is
turned from ON/RUN to LOCK/OFF,
these features continue working
for up to 20 minutes or until a door
is opened.
Starting the Engine
Place the transmission in the
proper gear.
Automatic Transmission
Move the shift lever to P (Park) or
N (Neutral). The engine will not start
in any other position. To restart
the vehicle when it is already
moving, use N (Neutral) only.
Notice:Do not try to shift to
P (Park) if the vehicle is moving.
If you do, you could damage
the transmission. Shift to P (Park)
only when the vehicle is stopped.
Manual Transmission
The shift lever should be in
N (Neutral) and the parking brake
engaged. Hold the clutch pedal
down to the oor and start the
engine. The vehicle will not start
if the clutch pedal is not all the
way down.
Features and Controls 2-17

1 (First):This position reduces
vehicle speed even more than
2 (Second) without using the brakes.
You can use it on very steep hills,
or in deep snow or mud. If the
shift lever is put in 1 (First) while the
vehicle is moving forward, the
transmission will not shift into rst
gear until the vehicle is going slowly
enough.
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 the vehicle
warranty. If you are stuck, do
not spin the tires. When stopping
on a hill, use the brakes to
hold the vehicle in place.
Hill Start Assist
H3 and H3T vehicles have a Hill
Start Assist feature, which may be
useful when stopped on a grade.
SeeBraking on page 4-3for
more information.
Manual Transmission
Operation
This is the shift pattern.
Vehicles with a manual transmission
operate as described below:
1 (First):Press the clutch pedal
and shift into 1 (First). Then slowly
let up on the clutch pedal as
you slowly press down on the
accelerator pedal.
You can shift into 1 (First) when
you are going less than 20 mph
(30 km/h). If you have come to a
complete stop and it is hard toshift into 1 (First), put the shift lever
in Neutral and let up on the
clutch. Then press the clutch pedal
back down and shift into 1 (First).
2 (Second):Press the clutch pedal
as you let up on the accelerator
pedal and shift into 2 (Second).
Then, slowly let up on the clutch
pedal as you press the accelerator
pedal.
3 (Third), 4 (Fourth) and 5 (Fifth):
Shift into 3 (Third), 4 (Fourth) and
5 (Fifth) the same way you do
for 2 (Second). Slowly let up on the
clutch pedal as you press the
accelerator pedal.
To stop, let up on the accelerator
pedal and press the brake
pedal. Just before the vehicle stops,
press the clutch pedal and the
brake pedal, and shift to Neutral.
Neutral:Use this position when you
start or idle the engine.
2-22 Features and Controls

R (Reverse):To back up, stop the
vehicle. Press the clutch pedal
and shift into R (Reverse). Slowly let
up on the clutch pedal as you press
the accelerator pedal. If it is hard
to shift, let the shift lever return
to Neutral and release the clutch
pedal. Then press the clutch again
and shift into R (Reverse). Do not
attempt to shift into the fth gear
position prior to shifting into
R (Reverse). The transmission has
a lock out feature which prevents
a 5 (Fifth) gear to R (Reverse)
gear shift.
Notice:Shifting to R (Reverse)
while the vehicle is moving
forward could damage the
transmission. The repairs would
not be covered by the vehicle
warranty. Shift to R (Reverse)
only after the vehicle is stopped.
Use R (Reverse), along with the
parking brake, for parking the
vehicle.Up-Shift Light
This light will show you when to
shift to the next higher gear for best
fuel economy.
When this light comes on, you can
shift to the next higher gear if
weather, road and traffic conditions
permit. For the best fuel economy,
accelerate slowly and shift when the
light comes on.
While you accelerate, it is normal
for the light to go on and off if
you quickly change the position of
the accelerator. Ignore the shift light
when you downshift.
Disregard the shift light when the
transfer case is in four-wheel low.
For more information, seeUp-Shift
Light on page 3-27.
Shift Speeds
{CAUTION
If you skip a gear when you
downshift, you could lose control
of the vehicle. You could injure
yourself or others. Do not shift
down more than one gear at a
time when you downshift.
Hill Start Assist
H3 and H3T vehicles have a Hill
Start Assist feature, which may be
useful when stopped on a grade.
SeeBraking on page 4-3for
more information.
Features and Controls 2-23

An indicator light will ash while
shifting the transfer case. If the
transfer case cannot make a
requested shift, it will return to the
last chosen setting.
If the SERV 4WD message on the
Driver Information Center (DIC)
stays on, take the vehicle to
your dealer/retailer for service.
See Service 4WD message under
DIC Warnings and Messages
on page 3-37.
Shifting between Four-Wheel
High and Four-Wheel-High Lock
With the vehicle traveling less
than 75 mph (120 km/h), press and
release the Four-Wheel High or
Four-Wheel-High Lock button.
It may be necessary to drive
backwards while turning for a
distance of 25 feet (7.5 m) to get
the lock feature to disengage.Shifting into Four-Wheel Low Lock
Notice:Shifting the transmission
into gear before the indicator
light stops ashing could cause
damage to the transfer case.
Always wait until the indicator
light stops ashing before putting
the transmission back in gear.
To shift into Four-Wheel-Low Lock,
the ignition must be in ON/RUN
and the vehicle must be stopped or
moving less than 3 mph (5 km/h)
with the transmission in N (Neutral).
The preferred method for shifting
into Four-Wheel Low is to have
the vehicle moving 1 to 2 mph
(1.6 to 3.2 km/h). Press and release
the Four-Wheel-Low Lock button.
If the vehicle has a manual
transmission, the clutch pedal must
be pressed to the oor while you
press the Four-Wheel-Low Lock
button, or the shift will not be
completed. You must wait for theFour-Wheel-Low Lock indicator
light to stop ashing and remain lit
before shifting the transmission
into gear.
It is normal for the vehicle to have
engagement noise and bump
when shifting between Four-Wheel
Low and Four-Wheel High ranges
or from Neutral.
If the Four-Wheel-Low Lock button
is pressed when the vehicle is
in gear and/or moving too fast, the
Four-Wheel-Low Lock indicator
light will ash for 15 seconds and
not complete the shift.
Features and Controls 2-25

Shifting Out of
Four-Wheel-Low Lock
Notice:Shifting the transmission
into gear before the indicator
light stops ashing could cause
damage to the transfer case.
Always wait until the indicator
light stops ashing before putting
the transmission back in gear.
To shift out of Four-Wheel-Low Lock,
the vehicle must be stopped or
moving less than 3 mph (5 km/h)
with the transmission in N (Neutral)
and the ignition in ON/RUN.
The preferred method for shifting out
of Four-Wheel-Low Lock is to have
the vehicle moving 1 to 2 mph
(1.6 to 3.2 km/h). Press and
release the Four-Wheel High or
Four-Wheel-High Lock button.If the vehicle has a manual
transmission, the clutch pedal must
be pressed to the oor while you
press the Four-Wheel High or
Four-Wheel-High Lock button, or the
shift will not be completed. You must
wait for the Four-Wheel High or
Four-Wheel-High Lock indicator light
to stop ashing and remain lit before
shifting the transmission into gear.
It is normal for the vehicle to have
engagement noise and bump
when shifting between Four-Wheel
Low and Four-Wheel High ranges
or from Neutral.
If the Four-Wheel High or
Four-Wheel-High Lock button is
pressed when the vehicle is in
gear and/or moving too fast,
the Four-Wheel High or
Four-Wheel-High Lock indicator
light will ash for 15 seconds but
will not complete the shift.Shifting Into Neutral
To shift the transfer case to Neutral:
1. Set the parking brake.
2. Start the vehicle.
3. Put the transmission in
N (Neutral). If the vehicle has a
manual transmission, press and
hold the clutch pedal down while
you perform Steps 5 through 9.
4. Shift the transfer case to
Four-Wheel High.
{CAUTION
Shifting an all-wheel-drive
vehicle’s transfer case into
Neutral can cause the vehicle
to roll even if the automatic
transmission is in P (Park) or the
manual transmission is in any
gear. You or others could be
injured. Make sure the parking
brake is rmly set before you shift
the transfer case to Neutral.
2-26 Features and Controls

5. Simultaneously press and hold
the Four-Wheel High and
Four-Wheel-Low Lock buttons for
10 seconds. The Neutral light
will come on when the transfer
case shift to Neutral is complete.
6. Press and hold the regular brake
pedal and shift the transmission
to R (Reverse), then shift the
transmission to D (Drive) for an
automatic transmission, or
1 (First) for vehicles have a
manual transmission and then let
out the clutch. This is to ensure
the transfer case is in Neutral.
If not, repeat this procedure
starting at Step 3.
7. Turn the engine off.
8. Place the transmission shift lever
in P (Park) for an automatic
transmission, or 1 (First) for
vehicles that have a manual
transmission.
9. Turn the ignition to LOCK/OFF.Shifting Out of Neutral
To shift out of Neutral:
1. Set the parking brake and apply
the regular brake pedal.
2. Shift the transmission to
N (Neutral) for an automatic
transmission, or press the clutch
pedal for vehicles that have a
manual transmission. Then turn
the ignition to ON/RUN but
do not start the engine.
3. Press the button for the desired
transfer case shift position
(Four-Wheel High,
Four-Wheel-High Lock or
Four-Wheel-Low Lock).
After the transfer case has
shifted out of Neutral the light
will go out.
4. Release the parking brake.Notice:Shifting the transmission
into gear before the indicator
light stops ashing could cause
damage to the transfer case.
Always wait until the indicator
light stops ashing before putting
the transmission back in gear.
5. You may start the engine and
shift the transmission to the
desired position.
Features and Controls 2-27

Parking the Vehicle
(Manual Transmission)
If the vehicle has a manual
transmission, before you get out of
the vehicle, move the shift lever
into R (Reverse), and rmly apply
the parking brake. Once the
shift lever has been placed into
R (Reverse) with the clutch pedal
pressed in, turn the ignition key
to LOCK/OFF, remove the key and
release the clutch.
If you are parking on a hill, or if the
vehicle is pulling a trailer, see
Towing a Trailer on page 4-42.
Parking Over Things
That Burn
{CAUTION
Things that can burn could touch
hot exhaust parts under the
vehicle and ignite. Do not park
over papers, leaves, dry grass, or
other things that can burn.
Engine Exhaust
{CAUTION
Engine exhaust contains Carbon
Monoxide (CO) which cannot be
seen or smelled. Exposure to CO
can cause unconsciousness and
even death.
Exhaust may enter the vehicle if:
The vehicle idles in areas
with poor ventilation (parking
garages, tunnels, deep snow
that may block underbody
airow or tail pipes).
The exhaust smells or
sounds strange or different.
The exhaust system leaks
due to corrosion or damage.
(Continued)
CAUTION (Continued)
The vehicle’s exhaust system
has been modied, damaged
or improperly repaired.
There are holes or openings
in the vehicle body from
damage or after-market
modications that are not
completely sealed.
If unusual fumes are detected or if
it is suspected that exhaust is
coming into the vehicle:
Drive it only with the windows
completely down.
Have the vehicle repaired
immediately.
Never park the vehicle with the
engine running in an enclosed
area such as a garage or a
building that has no fresh air
ventilation.
Features and Controls 2-31

Setting Cruise Control
{CAUTION
If you leave your cruise control on
when you are not using cruise,
you might hit a button and go into
cruise when you do not want to.
You could be startled and even
lose control. Keep the cruise
control switch off until you want to
use cruise control.
1. Move the cruise control switch
to on.
2. Get up to the speed desired.
3. Press
Tat the end of the lever
and release it.
4. Take your foot off the accelerator
pedal.
The cruise symbol on the instrument
panel comes on when the cruise
control is engaged.Resuming a Set Speed
Suppose the cruise control is set at
a desired speed and then you
apply the brake or step on the
clutch. This disengages the cruise
control. But it does not need to
be reset.
Once the vehicle is going about
25 mph (40 km/h) or more, move
the cruise control switch briey
from
RtoS.
The vehicle goes back to the
chosen speed and stays there.
If the switch is held at
resume/accelerate the vehicle will
keep going faster until the switch is
released or the brake is applied.
Do not hold the switch at
resume/accelerate, unless you want
the vehicle to go faster.Increasing Speed While Using
Cruise Control
There are two ways to go to a
higher speed:
Use the accelerator pedal to get
to the higher speed. Press
T
at the end of the lever, then
release the button and the
accelerator pedal. The vehicle
will now cruise at the higher
speed. If the accelerator pedal is
held longer than 60 seconds,
cruise control will turn off.
Move the cruise switch fromRto
S. Hold it there until you get up
to the desired speed, and
then release the switch. To
increase the vehicle speed in
small amounts, move the switch
briey to resume/accelerate.
Each time this is done, the
vehicle goes about 1 mph
(1.6 km/h) faster.
3-10 Instrument Panel

Reducing Speed While Using
Cruise Control
Press and holdTuntil the
desired lower speed is reached,
then release it.
To slow down in very small
amounts, briey press
T. Each
time this is done, the vehicle
goes about 1 mph (1.6 km/h)
slower.
Passing Another Vehicle While
Using Cruise Control
Use the accelerator pedal to
increase the vehicle speed. When
you take your foot off the pedal, the
vehicle slows down to the cruise
control speed set earlier.Using Cruise Control on Hills
How well the cruise control works on
hills depends upon the vehicle’s
speed, load, and the steepness of
the hills. When going up steep
hills, the accelerator pedal might
have to be used to maintain
the vehicle speed. When going
downhill, you might have to brake or
shift to a lower gear to keep the
vehicle speed down. When
the brake is applied the cruise
control will turn off.
Ending Cruise Control
To turn off the cruise control, do
one of the following:
Step lightly on the brake pedal.
Move the cruise control switch
to
9.
Lightly tap or press the clutch, if
the vehicle has a manual
transmission.Erasing Speed Memory
The cruise control set speed memory
is erased, when the cruise control or
the ignition is turned off.
Exterior Lamps
The exterior lamps control is located
on the instrument panel to the left
of the steering wheel.
O(Exterior Lamps):Turn the
knob to select one of the four
exterior lamp positions.
Instrument Panel 3-11

Service and
Appearance Care
Service
Service...............................5-3
Accessories and
Modications.....................5-3
California Proposition
65 Warning.......................5-4
California Perchlorate
Materials Requirements.....5-4
Doing Your Own
Service Work....................5-4
Adding Equipment to the
Outside of the Vehicle........5-5
Fuel
Fuel....................................5-5
Gasoline Octane.................5-5
Gasoline Specications.......5-5
California Fuel....................5-5
Additives.............................5-6
Fuels in Foreign
Countries..........................5-7
Filling the Tank...................5-7
Filling a Portable Fuel
Container..........................5-8
Checking Things Under
the Hood
Checking Things Under
the Hood..........................5-9
Hood Release.....................5-9
Engine Compartment
Overview.........................5-10
Engine Oil.........................5-13
Engine Oil Life System.....5-15
Engine Air Cleaner/Filter. . .5-17
Automatic Transmission
Fluid................................5-18
Manual Transmission
Fluid................................5-20
Hydraulic Clutch................5-21
Cooling System.................5-22
Engine Coolant.................5-23
Engine Overheating...........5-27
Engine Fan Noise.............5-28
Power Steering Fluid.........5-29
Windshield Washer Fluid. . .5-30
Brakes..............................5-30
Battery..............................5-33
Jump Starting...................5-34
Rear Axle
Rear Axle.........................5-38
Four-Wheel Drive
Four-Wheel Drive..............5-38
Front Axle
Front Axle.........................5-39
Headlamp Aiming
Headlamp Aiming..............5-39
Bulb Replacement
Bulb Replacement.............5-41
Halogen Bulbs..................5-41
Headlamps........................5-41
Taillamps, Turn Signal,
Stoplamps and Back-up
Lamps (H3)
.....................5-42
Taillamps, Turn Signal,
Stoplamps and Back-up
Lamps (H3T)
...................5-42
License Plate Lamp..........5-43
Replacement Bulbs...........5-43
Service and Appearance Care 5-1