brake HUMMER H3 2006 User Guide

Torque Lock (Automatic Transmission)
If you are parking on a hill and you do not shift your
transmission into PARK (P) properly, the weight of the
vehicle may put too much force on the parking pawl
in the transmission. You may nd it difficult to pull the
shift lever out of PARK (P). This is called “torque
lock.” To prevent torque lock, set the parking brake and
then shift into PARK (P) properly before you leave
the driver’s seat. To nd out how, seeShifting Into
Park (P) (Automatic Transmission) on page 2-28.
When you are ready to drive, move the shift lever out of
PARK (P) before you release the parking brake.
If torque lock does occur, you may need to have another
vehicle push yours a little uphill to take some of the
pressure from the parking pawl in the transmission, so
you can pull the shift lever out of PARK (P).
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 2-18.
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 4-59.
2-30

Running the Engine While Parked
It is better not to park with the engine running. But if you
ever have to, here are some things to know.
{CAUTION:
Idling the engine with the climate control
system off could allow dangerous exhaust into
your vehicle. See the earlier caution under
Engine Exhaust on page 2-31.
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even if
the climate control fan is at the highest setting.
One place this can happen is a garage.
Exhaust — with CO — can come in easily.
NEVER park in a garage with the engine
running.
Another closed-in place can be a blizzard. See
Winter Driving on page 4-45.
{CAUTION:
It can be dangerous to get out of your vehicle
if the automatic transmission shift lever is not
fully in PARK (P) with the parking brake rmly
set. Your vehicle can roll. Do not leave your
vehicle when the engine is running unless you
have to. If you have left the engine running,
the vehicle can move suddenly. You or others
could be injured. To be sure your vehicle will
not move, even when it is on fairly level
ground, always set the parking brake and
move the automatic transmission shift lever to
PARK (P), or the manual transmission shift
lever to NEUTRAL.
Follow the proper steps to be sure your vehicle will not
move. SeeShifting Into Park (P) (Automatic
Transmission) on page 2-28andParking Your Vehicle
(Manual Transmission) on page 2-30.
If you are pulling a trailer with your vehicle, seeTowing
a Trailer on page 4-59.
2-32

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn.............................................................3-6
Tilt Wheel.....................................................3-6
Turn Signal/Multifunction Lever.........................3-7
Turn and Lane-Change Signals........................3-8
Headlamp High/Low-Beam Changer..................3-8
Flash-to-Pass.................................................3-9
Windshield Wipers..........................................3-9
Windshield Washer.......................................3-10
Rear Window Wiper/Washer...........................3-10
Cruise Control..............................................3-11
Exterior Lamps.............................................3-14
Headlamps on Reminder................................3-15
Daytime Running Lamps (DRL).......................3-16
Automatic Headlamp System..........................3-16
Off-Road Lamps...........................................3-17
Fog Lamps..................................................3-18
Instrument Panel Brightness...........................3-18
Dome Lamp.................................................3-18
Dome Lamp Override....................................3-19
Exit Lighting.................................................3-19
Reading Lamps............................................3-19
Battery Run-Down Protection..........................3-19
Accessory Power Outlet(s).............................3-19
Ashtray(s) and Cigarette Lighter......................3-20Climate Controls............................................3-21
Climate Control System.................................3-21
Outlet Adjustment.........................................3-23
Warning Lights, Gages, and Indicators............3-24
Instrument Panel Cluster................................3-25
Speedometer and Odometer...........................3-26
Trip Odometer..............................................3-26
Tachometer.................................................3-26
Safety Belt Reminder Light.............................3-27
Passenger Safety Belt Reminder Light.............3-27
Airbag Readiness Light..................................3-28
Passenger Airbag Status Indicator...................3-29
Battery Warning Light....................................3-31
Up-Shift Light (Manual Transmission)...............3-31
Brake System Warning Light..........................3-32
Anti-Lock Brake System Warning Light.............3-33
Traction Off Light..........................................3-33
StabiliTrak
®Not Ready Light..........................3-33
Engine Coolant Temperature Gage..................3-34
Tire Pressure Light.......................................3-34
Malfunction Indicator Lamp.............................3-35
Oil Pressure Light.........................................3-38
Security Light...............................................3-39
Cruise Control Light......................................3-39
Highbeam On Light.......................................3-39
Fuel Gage...................................................3-40
Section 3 Instrument Panel
3-1

The main components of your instrument panel are the following:
A. Air Outlets. SeeOutlet Adjustment on page 3-23.
B. Turn Signal/Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 3-7. Windshield
Washer/Wiper. SeeWindshield Wipers on page 3-9
andWindshield Washer on page 3-10. Cruise
Controls. SeeCruise Control on page 3-11.
C. Horn. SeeHorn on page 3-6.
D. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 3-25.
E. Hazard Warning Flasher Button. SeeHazard
Warning Flashers on page 3-6.
F. All-Wheel Drive, Passenger Air Bag Status Indicator,
Locking Rear Axle, and Traction Control
System/StabiliTrak
®Buttons. SeeAll-Wheel Drive on
page 2-22,Passenger Airbag Status Indicator on
page 3-29,Locking Rear Axle on page 4-10,Traction
Control System (TCS) on page 4-9andStabiliTrak
®
System (Automatic Transmission) on page 4-11.
G. Exterior Lamps Control, Dome Override Button,
Instrument Panel Brightness Control, Fog Lamp
Button, and OnStar
®Button. SeeExterior Lamps on
page 3-14,Dome Lamp Override on page 3-19,
Instrument Panel Brightness on page 3-18,Fog
Lamps on page 3-18, andOnStar
®System on
page 2-36.H. Parking Brake Release. SeeParking Brake on
page 2-27.
I. Audio System. SeeAudio System(s) on page 3-48.
J. Climate Control System. SeeClimate Control
System on page 3-21.
K. Rear Washer/Wiper Control. SeeRear Window
Wiper/Washer on page 3-10.
L. Off-Road Lamps Buttons. SeeOff-Road Lamps on
page 3-17.
M. Shift Lever. SeeAutomatic Transmission Operation
on page 2-18orManual Transmission Operation
on page 2-21.
N. Accessory Power Outlets. SeeAccessory Power
Outlet(s) on page 3-19.
O. Glove Box. SeeGlove Box on page 2-42.
3-5

Cruise Control
With cruise control, you can maintain a speed of about
25 mph (40 km/h) or more without keeping your foot
on the accelerator. This can really help on long
trips. Cruise control does not work at speeds below
about 25 mph (40 km/h).
9(Off):This position
turns the system off.
R(On):This position activates the system.
+ (Resume/Accelerate):Move the lever to this symbol
to make the vehicle accelerate or resume to a
previously set speed.
rT(Set):Press this button to set the speed.
Cruise control will not work if your parking brake is set,
or if the master cylinder brake uid level is low.
If you apply your brakes, the cruise control will shut off.
{CAUTION:
Cruise control can be dangerous where you
cannot drive safely at a steady speed. So, do
not use your cruise control on winding roads
or in heavy traffic.
Cruise control can be dangerous on slippery
roads. On such roads, fast changes in tire
traction can cause needless wheel spinning,
and you could lose control. Do not use cruise
control on slippery roads.
If your vehicle is in cruise control when the traction
control system (if equipped) begins to limit wheel spin,
the cruise control will automatically disengage. See
Traction Control System (TCS) on page 4-9. When road
conditions allow you to safely use it again, you may
turn cruise control back on.
3-11

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 you want.
3. Press in the set button at the end of the lever and
release it.
4. Take your foot off the accelerator pedal.
The cruise symbol on the
instrument panel will
illuminate when the cruise
control is engaged.
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
don’t need to reset it.
Once you’re going about 25 mph (40 km/h) or more, you
can move the cruise control switch briey from on to
resume/accelerate.
You’ll go right back up to your chosen speed and
stay there.
If you hold the switch at resume/accelerate the vehicle
will keep going faster until you release the switch or
apply the brake. So unless you want to go faster, don’t
hold the switch at resume/accelerate.
3-12

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’ll 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 will go about
1 mph (1.6 km/h) faster.
Reducing Speed While Using
Cruise Control

Press and hold the set button until you reach the
lower speed you want, then release it.
To slow down in very small amounts, briey press
the set button. Each time you do this, you’ll 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 will
slow down to the cruise control speed you set earlier.
Using Cruise Control on Hills
How well your cruise control will work on hills depends
upon your speed, load and the steepness of the
hills. When going up steep hills, you may want to step
on the accelerator pedal to maintain your speed.
When going downhill, you may have to brake or shift to
a lower gear to keep your speed down. Of course,
applying the brake takes you out of cruise control. Many
drivers nd this to be too much trouble and don’t 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, your
cruise control set speed memory is erased.
3-13

Brake System Warning Light
Your vehicle’s hydraulic brake system is divided into
two parts. If one part is not working, the other part can
still work and stop you. For good braking, though,
you need both parts working well.
If the warning light comes on, there could be a brake
problem. Have your brake system inspected right away.
This light should come on briey when you turn the
ignition key to ON. If it does not come on then, have
it xed so it will be ready to warn you if there is
a problem.When the ignition is on, the brake system warning light
will also come on when you set your parking brake.
SeeParking Brake on page 2-27for more information.
The light will stay on if your parking brake does not
release fully. If it stays on after your parking brake is
fully released, it means you have a brake problem.
If the light comes on while you are driving, pull off the
road and stop carefully. You may notice that the pedal is
harder to push, or the pedal may go closer to the
oor. It may take longer to stop. If the light is still on,
have the vehicle towed for service. SeeTowing
Your Vehicle on page 4-57.
{CAUTION:
Your brake system may not be working
properly if the brake system warning light is
on. Driving with the brake system warning light
on can lead to an accident. If the light is still
on after you have pulled off the road and
stopped carefully, have the vehicle towed
for service. United StatesCanada
3-32

Anti-Lock Brake System
Warning Light
With the anti-lock brake
system, this light will come
on briey when you
start your engine to show it
is working. Then it will
turn off. This is normal.
If the light stays on, or comes on when you’re driving,
your vehicle needs service. If the regular brake
system warning light isn’t on, you still have brakes, but
you don’t have anti-lock brakes. If the regular brake
system warning light is also on, you don’t have anti-lock
brakes and there’s a problem with your regular
brakes. SeeBrake System Warning Light on page 3-32.
The anti-lock brake system warning light should come
on briey when you turn the ignition key to ON. If
the light doesn’t come on then, have it xed so it will be
ready to warn you if there is a problem.
Traction Off Light
If you have the traction
control system, this light
will come on when
the traction control system
has been turned off.
This light will come on briey when the ignition is turned
to ON, if it does not the system may require service.
For more information on the traction off light, see
Traction Control System (TCS) on page 4-9.
StabiliTrak®Not Ready Light
If you have the StabiliTrak®
system, this light will come
on when the StabiliTrak®
system has been
turned off.
This light will come on briey when the ignition is turned
to ON, if it does not the system may require service.
For more information, seeStabiliTrak
®System
(Automatic Transmission) on page 4-11.
3-33

ABS (Anti-Lock Brake System) FAULT
This message will be displayed if there is a problem
with the anti-lock brake system. Check the anti-lock
brake system as soon as possible and have your vehicle
serviced by your GM dealer. SeeBrakes on page 5-36
andAnti-Lock Brake System Warning Light on
page 3-33for more information. Press and release the
reset stem to acknowledge the message and clear
it from the DIC display.
BATTERY
This message will be displayed when there is a problem
with the battery. SeeBattery on page 5-39andBattery
Warning Light on page 3-31for more information.
BRAKES
This message will be displayed if there is a problem
with the brakes. Check the brakes as soon as possible
and have your vehicle serviced by your GM dealer.
SeeBrakes on page 5-36andBrake System Warning
Light on page 3-32for more information. Press and
release the reset stem to acknowledge the message and
clear it from the DIC display.
CHANGE OIL
This message will be displayed when the oil needs to
be changed. Check the oil in your vehicle as soon
as possible and have your vehicle serviced by your
GM dealer. SeeEngine Oil on page 5-13andScheduled
Maintenance on page 6-4for more information. Press
and release the reset stem to acknowledge the message
and clear it from the display.
DOORS
This message will be displayed when one or more
of the doors is ajar. You should check all the doors
on your vehicle to make sure they are closed. The
message will clear from the display after all of the
doors are closed.
ENG (Engine) HOT
This message will be displayed when the engine coolant
temperature is hot. Check the engine coolant
temperature gage. SeeEngine Coolant Temperature
Gage on page 3-34. You should have your vehicle
serviced by your GM dealer as soon as possible if you
suspect the engine is overheating. SeeEngine
Overheating on page 5-27for more information.
3-45