2008 HUMMER H3 clock

To remove the fuel cap, turn it slowly counterclockwise.
While refueling, let the fuel cap hang by the tether, if
it has one.
{CAUTION:
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 your 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 overll the
tank and wait a few seconds after you have nished
pumping before removing the nozzle. Clean fuel
from painted surfaces as soon as possible. See
Washing Your Vehicle on page 5-95.
When replacing the fuel cap, turn it clockwise until it
clicks. Make sure the cap is fully installed. The diagnostic
system can determine if the fuel cap has been left off or
improperly installed. This would allow fuel to evaporate
into the atmosphere. SeeMalfunction Indicator Lamp on
page 3-36.The FUEL CAP message will be displayed on the Driver
Information Center (DIC) if the fuel cap is not properly
installed. SeeDIC Warnings and Messages on
page 3-43for more information.
{CAUTION:
If a re starts while you are refueling, do not
remove the nozzle. Shut off the ow of fuel by
shutting off the pump or by notifying the
station attendant. Leave the area immediately.
Notice:If you need a new fuel cap, be sure to get
the right type. Your dealer/retailer can get one
for you. If you get the wrong type, it may not t
properly. This may cause your malfunction indicator
lamp to light and may damage your fuel tank and
emissions system. SeeMalfunction Indicator Lamp
on page 3-36.
5-9

If the overheat warning continues, there is one more
thing you can try. Add the proper mixture directly to the
radiator, but be sure the cooling system is cool before
you do it.
{CAUTION:
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 radiator
pressure cap — even a little — they can come
out at high speed. Never turn the cap when the
cooling system, including the radiator pressure
cap, is hot. Wait for the cooling system and
radiator pressure cap to cool if you ever have
to turn the pressure cap.
How to Add Coolant to the Radiator
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 ller
neck. SeeEngine Coolant on page 5-27for more
information about the proper coolant mixture.
5-34

7. 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.8. 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.
9. Repeat Steps 7 and 8 for the opposite headlamp. Passenger’s Side Shown
5-48

Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 5-52.
For any bulb changing procedure not listed in this
section, contact your dealer/retailer.
Halogen Bulbs
{CAUTION:
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. SeeHood Release on page 5-11
for more information.
2. Reach in and access the headlamp bulb socket
from inside the engine compartment.3. Turn the bulb socket counterclockwise to remove it
from the headlamp assembly and pull it straight out.
4. Unplug the electrical connector by pushing
the release tab and pulling the bulb socket out.
5. Replace with a new bulb socket.
6. Reinstall the electrical connector.
7. Reinstall the new bulb socket into the headlamp
assembly and turn it clockwise to secure.
8. Close the hood.
5-49

4. Turn the bulb socket counterclockwise to remove it
from the taillamp assembly.
5. Holding the socket, pull the old bulb to release it
from the socket.
6. Push the new bulb into the socket until it clicks.
7. Insert the bulb socket into the taillamp assembly
and turn it clockwise to secure.
8. Reinstall the taillamp assembly by lining up
the locator pins with the retainers in the
vehicle’s body.
9. Reinstall the two screws and tighten.
10. Close the swing-gate.License Plate Lamp
To replace one of these bulbs:
1. Reach under the bumper for the bulb socket.
2. Remove the two screws holding the license
plate lamp.
5-51

3. Pull the license plate lamp away from the fascia.
4. Turn the bulb socket counterclockwise and pull the
bulb straight out of the license plate lamp assembly.
5. Install the new bulb into the socket.
6. Insert the bulb socket into the license plate lamp
assembly and turn it clockwise to secure.
7. Replace the license plate lamp assembly and
tighten the two screws.
Replacement Bulbs
Exterior Lamp Bulb Number
Back-up Lamp, Stoplamp,
Taillamp and Turn Signal Lamp3157K
License Plate Lamp 194
Low-Beam and High-Beam
HeadlampH13
For replacement bulbs not listed here, contact your
dealer/retailer.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for wear
and cracking. SeeScheduled Maintenance on page 6-4
for more information.
Replacement blades come in different types and are
removed in different ways. For proper type and length,
seeNormal Maintenance Replacement Parts on
page 6-14.
5-52

Removing the Spare Tire and Tools
The equipment you will need is located in the
swing-gate, behind a cover. To remove the equipment:
1. Open the swing-gate. SeeSwing-gate on
page 2-10for more information.
2. Remove the cover, located on the inside of the
swing-gate, by lifting the two latches.
3. Turn the wing nut counterclockwise to release the
jack tool bag and jack.
4. Remove the tool bag and jack from its compartment.5. Undo the straps that secure the jack tool bag to
the jack.
6. Open the tool bag and you will nd the following
tools, which you will use to remove the spare tire
and at tire:
A. Wheel Wrench
B. Jack Handle
ExtensionsC. Jack Handle
D. Jack
E. Wheel Blocks
5-81

3. Turn the wheel wrench
counterclockwise to
loosen the wheel nuts.
Do not remove
them yet.
If your vehicle has locking lug nuts, the key is
supplied in the tool bag. Use the key along with
the wheel wrench to remove the wheel nuts
from the tire.
Now jack up the vehicle.A. Front Position - Lower Control Arm
B. Rear Position - Lower Axle
4. Locate the vehicle’s jacking positions (A and B).
Jacking Locations (Overall View)
5-84