clutch HUMMER H3 2007 Owners Manual

The battery could be drained if you leave the key
in the ignition while your vehicle is parked.
You may not be able to start your vehicle after it
has been parked for an extended period of time.
Retained Accessory Power (RAP)
Your vehicle has Retained Accessory Power (RAP)
which allows certain features of your vehicle to
continue working for up to 20 minutes after
the ignition key is turned to LOCK.
The radio, front wipers, power windows, and a
sunroof if your vehicle has one, will work when the
ignition key is in ON or ACC. Once the key is turned
from ON to LOCK, 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 your shift lever to PARK (P) or
NEUTRAL (N). Your engine will not start in
any other position -- this is a safety feature.
To restart when you are already moving, use
NEUTRAL (N) only.
Notice:Do not try to shift to PARK (P) if your
vehicle is moving. If you do, you could
damage the transmission. Shift to PARK (P)
only when your vehicle is stopped.
Manual Transmission
The shift lever should be in the NEUTRAL position
and the parking brake engaged. Hold the clutch
pedal to the oor and start the engine. Your
vehicle will not start if the clutch pedal is not all
the way down. That is a safety feature.
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 gets warm. 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.
103

Manual Transmission Operation
This is your shift
pattern.
Here is how to operate your manual transmission:
FIRST (1):Press the clutch pedal and shift into
FIRST (1). Then, slowly let up on the clutch pedal
as you slowly press down on the accelerator pedal.
You can shift into FIRST (1) when you are going
less than 20 mph (30 km/h). If you have come to a
complete stop and it is hard to shift into FIRST (1),
put the shift lever in NEUTRAL and let up on the
clutch. Then press the clutch pedal back down and
shift into FIRST (1).SECOND (2):Press the clutch pedal as you
let up on the accelerator pedal and shift into
SECOND (2). Then, slowly let up on the clutch
pedal as you press the accelerator pedal.
THIRD, FOURTH AND FIFTH (3, 4 and 5):
Shift into THIRD (3), FOURTH (4) and FIFTH (5)
the same way you do for SECOND (2). 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 your engine.
109

REVERSE (R):To back up, press the clutch pedal.
After the vehicle stops, shift into REVERSE (R).
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
REVERSE (R). Do not attempt to shift into the fth
gear position prior to shifting into REVERSE (R).
Your transmission has a lock out feature which
prevents a fth gear to reverse gear shift.
Notice:Shifting to REVERSE (R) while your
vehicle is moving forward could damage the
transmission. The repairs would not be covered
by your warranty. Shift to REVERSE (R) only
after your vehicle is stopped.
Use REVERSE (R), along with the parking brake,
for parking your 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.
If your vehicle has four-wheel drive and has a
manual transmission, disregard the shift light when
the transfer case is in four-wheel low.
For more information, seeUp-Shift Light
(Manual Transmission) on page 181.
Shift Speeds
{CAUTION:
If you skip a gear when you downshift,
you could lose control of your vehicle.
You could injure yourself or others.
Do not shift down more than one gear
at a time when you downshift.
110

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 and the vehicle must be stopped or
moving less than 3 mph (5 km/h) with the
transmission in NEUTRAL (N). The preferred
method for shifting into Four-Wheel Low is to have
your vehicle moving 1 to 2 mph (1.6 to 3.2 km/h).
Press and release the Four-Wheel-Low Lock
button. If your 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 the
Four-Wheel-Low Lock indicator light to stop
ashing and remain lit before shifting your
transmission in gear.
It is normal for your vehicle to have engagement
noise and bump when shifting between
Four-Wheel Low and Four-Wheel High ranges or
from NEUTRAL with the engine running.If the Four-Wheel-Low Lock button is pressed
when your 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
unless your vehicle is moving less than 3 mph
(5 km/h) and the transmission is in NEUTRAL (N).
After 15 seconds the transfer case will return to
the last chosen setting.
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, your
vehicle must be stopped or moving less
than 3 mph (5 km/h) with the transmission
in NEUTRAL (N) and the ignition in ON.
The preferred method for shifting out of
Four-Wheel-Low Lock is to have your
vehicle moving 1 to 2 mph (1.6 to 3.2 km/h).
113

Press and release the Four-Wheel High or
Four-Wheel-High Lock button. If your 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 your
transmission into gear.
It is normal for your vehicle to have engagement
noise and bump when shifting between
Four-Wheel Low and Four-Wheel High ranges
or from NEUTRAL with the engine running.
If the Four-Wheel High or Four-Wheel-High Lock
button is pressed when your 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
unless your vehicle is moving less than 3 mph
(5 km/h) and the transmission is in NEUTRAL (N).Shifting Into NEUTRAL
To shift the transfer case to NEUTRAL, do the
following:
1. Set the parking brake.
2. Start the vehicle by turning the ignition to
START.
3. Put the transmission in NEUTRAL (N).
If your 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
your vehicle to roll even if the automatic
transmission is in PARK (P) 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.
114

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 REVERSE (R) for
one second, then shift the transmission for
one second to DRIVE (D) for an automatic
transmission, or FIRST (1) 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, by turning the key to ACC.
8. Place the transmission shift lever in PARK (P)
for an automatic transmission, or FIRST (1)
for vehicles that have a manual transmission.
9. Turn the ignition to LOCK.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 NEUTRAL (N) for an
automatic transmission, or press the clutch
pedal for vehicles that have a manual
transmission. Then turn the ignition to ON
with the engine off.
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.
115

Shifting Out of Park (P)
(Automatic Transmission)
Your vehicle has an automatic transmission shift
lock control system. You have to apply your
regular brake before you can shift from PARK (P)
when the ignition is in ON. SeeAutomatic
Transmission Operation on page 106.
If you cannot shift out of PARK (P), ease pressure
on the shift lever and push the shift lever all the way
into PARK (P) as you maintain brake application.
Then move the shift lever into the gear you wish.
Press the shift lever button before moving the
shift lever.
Parking Your Vehicle
(Manual Transmission)
Your vehicle has a manual transmission. Before
you get out of your vehicle, move the shift
lever into REVERSE (R), and rmly apply the
parking brake. Once the shift lever has been
placed into REVERSE (R) with the clutch pedal
pressed in, turn the ignition key to LOCK, remove
the key and release the clutch.
If you are parking on a hill, or if your vehicle is
pulling a trailer, seeTowing a Trailer on page 297.
Parking Over Things That Burn
{CAUTION:
Things that can burn could touch hot
exhaust parts under your vehicle and
ignite. Do not park over papers, leaves,
dry grass, or other things that can burn.
119

Resuming a Set Speed
Suppose you set your cruise control at a desired
speed and then you apply the brake or step
on the clutch. This, of course, disengages the
cruise control. But you do not need to reset it.
Once you are going about 25 mph (40 km/h)
or more, you can move the cruise control switch
briey from on to resume/accelerate.
The vehicle will go back to the chosen speed and
stays there.
If you hold the switch at resume/accelerate the
vehicle will keep going faster until you release
the switch or apply the brake. 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 the set button at the end of
the lever, then release the button and
the accelerator pedal. You 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 from on to resume/
accelerate. Hold it there until you get up
to the speed you want, and then release the
switch. To increase your speed in very
small amounts, move the switch briey to
resume/accelerate. Each time you do this, your
vehicle goes about 1 mph (1.6 km/h) faster.
Reducing Speed While Using
Cruise Control

Press and hold the set button until you reach
the desired lower speed, then release it.
To slow down in very small amounts, briey
press the set button. Each time you do this,
you will go about 1 mph (1.6 km/h) slower.
Passing Another Vehicle While Using
Cruise Control
Use the accelerator pedal to increase your speed.
When you take your foot off the pedal, your
vehicle slows down to the cruise control speed
you set earlier.
161

Using Cruise Control on Hills
How well your cruise control works on hills depends
upon your speed, load, and the steepness of the
hills. When going up steep hills, you might want
to step on the accelerator pedal 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. Of course, applying the brake
turns off the cruise control. Many drivers nd this
to be too much trouble and do not use cruise control
on steep hills.
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 off.
Lightly tap or press the clutch, if you have
a manual transmission.
Erasing Speed Memory
When you turn off the cruise control or the ignition,
the cruise control set speed memory is erased.
Exterior Lamps
The control on the driver’s side of your instrument
panel operates the exterior lamps.
O(Exterior Lamps):Turn the knob, located to
the right of this symbol, to choose one of the
four exterior lamp positions.
162

Service........................................................ 314
Accessories and Modications................... 314
California Proposition 65 Warning.............. 315
Doing Your Own Service Work.................. 315
Adding Equipment to the Outside
of Your Vehicle...................................... 316
Fuel............................................................. 316
Gasoline Octane........................................ 316
Gasoline Specications.............................. 316
California Fuel........................................... 316
Additives................................................... 317
Fuels in Foreign Countries........................ 318
Filling the Tank......................................... 318
Filling a Portable Fuel Container............... 320
Checking Things Under the Hood.............. 321
Hood Release........................................... 321
Engine Compartment Overview.................. 322
Engine Oil................................................. 323Engine Oil Life System.............................. 326
Engine Air Cleaner/Filter............................ 328
Automatic Transmission Fluid.................... 329
Manual Transmission Fluid........................ 332
Hydraulic Clutch........................................ 334
Engine Coolant.......................................... 335
Radiator Pressure Cap.............................. 338
Engine Overheating................................... 338
Cooling System......................................... 340
Engine Fan Noise..................................... 345
Power Steering Fluid ................................. 345
Windshield Washer Fluid........................... 346
Brakes...................................................... 347
Battery...................................................... 351
Jump Starting............................................ 352
Rear Axle.................................................... 357
Four-Wheel Drive........................................ 358
Front Axle................................................... 358
Section 5 Service and Appearance Care
311