2010 HUMMER H3 clock

Driving and Operating 9-5
Steering in Emergencies
There are times when steering can
be more effective than braking. For
example, you come over a hill and
find a truck stopped in your lane,
or a car suddenly pulls out from
nowhere, or a child darts out from
between parked cars and stops right
in front of you. These problems can
be avoided by braking—if you can
stop in time. But sometimes you
cannot stop in time because there
is no room. That is the time for
evasive action —steering around
the problem.
The vehicle can perform very well
in emergencies like these. First
apply the brakes. See Braking
on
page 9‑3. It is better to remove
as much speed as possible from
a collision. Then steer around
the problem, to the left or right
depending on the space available.
An emergency like this requires
close attention and a quick decision.
If holding the steering wheel at the
recommended 9 and 3 o'clock
positions, it can be turned a full
180 degrees very quickly without
removing either hand. But you have
to act fast, steer quickly, and just as
quickly straighten the wheel once
you have avoided the object.
The fact that such emergency
situations are always possible is a
good reason to practice defensive
driving at all times and wear safety
belts properly.
Off-Road Recovery
The vehicle's right wheels can drop
off the edge of a road onto the
shoulder while driving.
If the level of the shoulder is
only slightly below the pavement,
recovery should be fairly easy.
Ease off the accelerator and
then, if there is nothing in the
way, steer so that the vehicle
straddles the edge of the pavement.

Driving and Operating 9-17
.While backing down the hill, put
your left hand on the steering
wheel at the 12 o'clock position
so you can tell if the wheels are
straight and can maneuver as
you back down. It is best to back
down the hill with the wheels
straight rather than in the left or
right direction. Turning the wheel
too far to the left or right will
increase the possibility of a
rollover.
Things not to do if the vehicle stalls,
or is about to stall, when going up
a hill:
.Never attempt to prevent a stall
by shifting into N (Neutral) to
rev-up the engine and regain
forward momentum. This will
not work. The vehicle can roll
backward very quickly and could
go out of control.
.Never try to turn around if about
to stall when going up a hill.
If the hill is steep enough to stall
the vehicle, it is steep enough
to cause it to roll over. If you
cannot make it up the hill, back
straight down the hill.
If, after stalling, you try to back
down the hill and decide you just
cannot do it, set the parking brake.
If the vehicle has an automatic
transmission, shift to P (Park). Turn
off the engine. Leave the vehicle
and go get some help. Exit on the
uphill side and stay clear of the path
the vehicle would take if it rolled
downhill. Do not shift the transfer
case to Neutral when you leave the
vehicle. Leave it in some gear.
{WARNING
Shifting the transfer case to
Neutral can cause your vehicle to
roll even if the transmission is in
P (Park). This is because the
Neutral position on the transfer
case overrides the transmission.
You or someone else could be
injured. If you are going to leave
your vehicle, set the parking
brake and shift the transmission
to P (Park). But do not shift the
transfer case to Neutral.

9-68 Driving and Operating
Filling the Tank
{WARNING
Fuel vapor burns violently and a
fuel fire can cause bad injuries.
To help avoid injuries to you and
others, read and follow all the
instructions on the fuel pump
island. Turn off the engine when
refueling. Do not smoke near fuel
or when refueling the vehicle. Do
not use cellular phones. Keep
sparks, flames, and smoking
materials away from fuel. Do not
leave the fuel pump unattended
when refueling the vehicle. This is
against the law in some places.
Do not re-enter the vehicle while
pumping fuel. Keep children away
from the fuel pump; never let
children pump fuel.
The fuel cap is located on the driver
side of the vehicle.
To remove the fuel cap, turn it
slowly counterclockwise. While
refueling, let the fuel cap hang by
the tether, if it has one.
When reinstalling the cap, turn
it clockwise until three clicks,
otherwise the Malfunction
Indicator Lamp could turn on.
SeeMalfunction Indicator Lamp
on
page 5‑12.
{WARNING
Fuel can spray out on you if you
open the fuel cap too quickly.
If you spill fuel and then
something ignites it, you could
be badly burned. This spray can
happen if the tank is nearly full,
and is more likely in hot weather.
Open the fuel cap slowly and wait
for any hiss noise to stop. Then
unscrew the cap all the way.
Be careful not to spill fuel. Do not
top off or overfill the tank and wait
a few seconds after you have
finished pumping before removing
the nozzle. Clean fuel from painted
surfaces as soon as possible. See
Exterior Care on page 10‑92.
When replacing the fuel cap,
turn it clockwise until three clicks.
Make sure the cap is fully installed.
The diagnostic system can
determine if the fuel cap has been
left off or improperly installed.

Vehicle Care 10-21
{WARNING
Steam and scalding liquids from
a hot cooling system can blow
out and burn you badly. They
are under pressure, and if you
turn the surge tank pressure
cap—even a little —they can
come out at high speed. Never
turn the cap when the cooling
system, including the surge tank
pressure cap, is hot. Wait for the
cooling system and surge tank
pressure cap to cool if you ever
have to turn the pressure cap.
If coolant is needed, add the proper
mixture directly to the radiator, but
be sure the cooling system is cool
before this is done.
1. Remove the radiator pressure cap when the cooling system,
including the upper radiator
hose, is no longer hot. Turn
the pressure cap slowly
counterclockwise about
one full turn.
If you hear a hiss, wait for that to
stop. A hiss means there is still
some pressure left.
2. Keep turning the cap to remove it. 3. Fill the radiator with the proper
DEX‐COOL coolant mixture,
up to the base of the filler
neck. See Engine Coolant
on
page 10‑19for more information
about the proper coolant
mixture.
4. Fill the coolant recovery tank to
the FULL COLD mark.
5. Reinstall the cap on the coolant recovery tank, but leave the
radiator pressure cap off.

10-34 Vehicle Care
3. At a wall, measure from theground upward the recorded
distance from Step 2 and
mark it.
4. Draw or tape a horizontal line the width of the vehicle at the
wall where it was marked it
Step 4.
Notice: Do not cover a headlamp
to improve beam cut-off when
aiming. Covering a headlamp may
cause excessive heat build-up
which may cause damage to the
headlamp. 5. Turn on the headlamps and
place a piece of cardboard
or equivalent in front of the
headlamp not being aimed. This
should allow only the beam of
light from the headlamp being
aimed to be seen on the wall.
Passenger Side Shown
6. Locate the vertical headlamp aiming screws, which are under
the hood near each headlamp
assembly.
The adjustment screw can be
turned with an E8 Torx
®socket
or T15 Torx®screwdriver.
7. Turn the vertical aiming screw
until the headlamp beam is
aimed to the horizontal tape
line. Turn it clockwise or
counterclockwise to raise or
lower the beam.
The top edge of the cut-off
should be positioned at the
bottom edge of the horizontal
tape line.
8. Repeat Steps 7 and 8 for the opposite headlamp.

Vehicle Care 10-35
Bulb Replacement
For the proper type of replacement
bulbs, seeReplacement Bulbson
page 10‑37.
For any bulb changing procedure
not listed in this section, contact
your dealer.
Halogen Bulbs
{WARNING
Halogen bulbs have pressurized
gas inside and can burst if you
drop or scratch the bulb. You or
others could be injured. Be sure
to read and follow the instructions
on the bulb package.
Headlamps
To replace a headlamp bulb:
1. Open the hood. See Hood
on
page 10‑5for more information.
2. Turn the bulb socket counterclockwise to remove it
from the headlamp assembly
and pull it straight out.
3. Unplug the electrical connector by pushing the release tab and
pulling the bulb socket out. 4. Replace with a new bulb socket.
5. Reverse steps 1 through 3 to
reinstall.
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps (H3)
A. Stoplamp, Taillamp and TurnSignal Lamp
B. Back-up Lamp

10-36 Vehicle Care
To replace one of these bulbs in the
taillamp assembly:
1. Open the swing-gate. SeeTailgate on page 2‑7.
Passenger Side Shown
2. Remove the two screws from the taillamp assembly.
3. Pull the taillamp assembly away from the vehicle.
4. Turn the bulb socket counterclockwise to remove it
from the taillamp assembly. 5. Pull the old bulb to release it
from the socket.
6. Reverse steps 1 through 4 to reinstall.
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps (H3T)
A. Stoplamp and Taillamp
B. Turn Signal Lamp
C. Back-up Lamp To replace one of these bulbs in the
taillamp assembly:
1. Open the tailgate. See
Tailgate
on page 2‑7.
2. Remove the two screws from the
taillamp assembly.
3. Pull the taillamp assembly away from the vehicle.

Vehicle Care 10-37
4. Turn the bulb socketcounterclockwise to remove it
from the taillamp assembly.
5. Pull the old bulb to release it from the socket.
6. Turn the bulb socket clockwise to reinstall in the taillamp
assembly.
7. Reinstall the taillamp assembly making sure to line up the pins
with the vehicle.
8. Reinstall the two screws.License Plate Lamp
To replace one of these bulbs:
1. Remove the two screws holding the license plate lamp.
2. Pull the license plate lamp away from the fascia.
3. Turn the bulb socket counterclockwise and pull the
bulb straight out of the license
plate lamp assembly. 4. Install the new bulb into the
socket.
5. Reverse steps 1 through 4 to reinstall.
Replacement Bulbs
Exterior Lamp Bulb
Number
Back-up
Lamp (H3T) W16W
Back-up (H3),
Stoplamp,
Taillamp and Turn
Signal Lamp 3157K
License Plate Lamp 194
Low-Beam and
High-Beam
Headlamp H13
For replacement bulbs not listed
here, contact your dealer.