2009 HUMMER H3 oil

Engine Coolant
The cooling system in the vehicle
is lled with DEX-COOL®engine
coolant. This coolant is designed to
remain in the vehicle for ve years
or 150,000 miles (240 000 km),
whichever occurs rst.
The following explains the cooling
system and how to check and
add coolant when it is low.
If there is a problem with engine
overheating, seeEngine
Overheating on page 5-27.
What to Use
{CAUTION
Adding only plain water to the
cooling system can be dangerous.
Plain water, or some other liquid
such as alcohol, can boil before
the proper coolant mixture will.
(Continued)
CAUTION (Continued)
The vehicle’s coolant warning
system is set for the proper
coolant mixture. With plain water
or the wrong mixture, the engine
could get too hot but you would
not get the overheat warning.
The engine could catch re and
you or others could be burned.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®
coolant.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. If using this mixture,
nothing else needs to be added.
This mixture:
Gives freezing protection down
to−34°F (−37°C), outside
temperature.
Gives boiling protection up to
265°F (129°C), engine
temperature.
Protects against rust and
corrosion.
Will not damage aluminum parts.
Helps keep the proper engine
temperature.
Notice:If an improper coolant
mixture is used, the engine could
overheat and be badly damaged.
The repair cost would not be
covered by the vehicle warranty.
Too much water in the mixture
can freeze and crack the engine,
radiator, heater core, and
other parts.
Notice:If extra inhibitors
and/or additives are used in the
vehicle’s cooling system, the
vehicle could be damaged.
Use only the proper mixture of
the engine coolant listed in
this manual for the cooling
system. SeeRecommended
Fluids and Lubricants on
page 6-12for more information.
Service and Appearance Care 5-23

Checking Coolant
The vehicle must be on a level
surface when checking the
coolant level.
The coolant recovery tank cap has
this symbol on it.
It is located toward the rear of
the engine compartment on
the passenger side of the vehicle.
SeeEngine Compartment Overview
on page 5-10for more information
on location.
Check to see if coolant is visible in
the coolant recovery tank. If the
coolant inside the coolant recovery
tank is boiling, do not do anythingelse until it cools down. If coolant is
visible but the coolant level is not
at or above the FULL COLD
mark, add a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant at the coolant recovery tank,
but be sure the cooling system is
cool before this is done.
The vehicle must be on a level
surface. When the engine is cold,
the coolant level should be at FULL
COLD, or a little higher. When
the engine is warm, the level could
be above the FULL COLD level.
When the engine is cold, the coolant
level should be at least up to the
FULL COLD mark. If it is not, there
could be a leak in the cooling
system.
How to Add Coolant to the
Recovery Tank
{CAUTION
You can be burned if you spill
coolant on hot engine parts.
Coolant contains ethylene glycol
and it will burn if the engine parts
are hot enough. Do not spill
coolant on a hot engine.
Notice:This vehicle has a
specic coolant ll procedure.
Failure to follow this procedure
could cause the engine to
overheat and be severely
damaged.
When the coolant in the coolant
recovery tank is at the FULL COLD
mark, start the vehicle.
If coolant is needed, add the proper
DEX-COOL coolant mixture at
the coolant recovery tank.
5-24 Service and Appearance Care

Do not top off the brake uid. Adding
uid does not correct a leak. If uid is
added when the linings are worn,
there will be too much uid when new
brake linings are installed. Add or
remove brake uid, as necessary,
only when work is done on the brake
hydraulic system.
{CAUTION
If too much brake uid is added,
it can spill on the engine and
burn, if the engine is hot enough.
You or others could be burned,
and the vehicle could be
damaged. Add brake uid only
when work is done on the brake
hydraulic system. See “Checking
Brake Fluid” in this section.
Refer to the Maintenance Schedule
to determine when to check the
brake uid. SeeScheduled
Maintenance on page 6-4.
Checking Brake Fluid
Check brake uid by looking at the
brake uid reservoir. SeeEngine
Compartment Overview on
page 5-10.
The uid level should be above
MIN. If it is not, have the brake
hydraulic system checked to see
if there is a leak.
After work is done on the brake
hydraulic system, make sure the
level is above the MIN but not over
the MAX mark.
What to Add
Use only new DOT-3 brake uid
from a sealed container. See
Recommended Fluids and
Lubricants on page 6-12.
Always clean the brake uid
reservoir cap and the area around
the cap before removing it. This
helps keep dirt from entering
the reservoir.{CAUTION
With the wrong kind of uid in the
brake hydraulic system, the brakes
might not work well. This could
cause a crash. Always use the
proper brake uid.
Notice:
Using the wrong uid can badly
damage brake hydraulic system
parts. For example, just a few
drops of mineral-based oil,
such as engine oil, in the brake
hydraulic system can damage
brake hydraulic system parts so
badly that they will have to be
replaced. Do not let someone
put in the wrong kind of uid.
If brake uid is spilled on the
vehicle’s painted surfaces, the
paint nish can be damaged.
Be careful not to spill brake uid
on the vehicle. If you do, wash it
off immediately. SeeWashing
Your Vehicle on page 5-86.
Service and Appearance Care 5-31

(C) Aspect Ratio:A two-digit
number that indicates the tire
height-to-width measurements.
For example, if the tire size
aspect ratio is 75, as shown
in item C of the light truck
(LT-Metric) tire illustration,
it would mean that the tire’s
sidewall is 75 percent as high
as it is wide.
(D) Construction Code
:A letter code is used to indicate
the type of ply construction in
the tire. The letter R means
radial ply construction; the
letter D means diagonal or
bias ply construction; and the
letter B means belted-bias
ply construction.
(E) Rim Diameter
:Diameter of
the wheel in inches.
(F) Service Description
:The service description indicates
the load range and speed
rating of a tire. The load index
can range from 1 to 279. Speed
ratings range from A to Z.
Tire Terminology and
Denitions
Air Pressure:The amount of
air inside the tire pressing
outward on each square inch
of the tire. Air pressure is
expressed in pounds per square
inch (psi) or kilopascal (kPa).
Accessory Weight
:This means
the combined weight of optional
accessories. Some examples
of optional accessories are,
automatic transmission, power
steering, power brakes, power
windows, power seats, and air
conditioning.
Aspect Ratio
:The relationship
of a tire’s height to its width.
Belt
:A rubber coated layer of
cords that is located between the
plies and the tread. Cords may
be made from steel or other
reinforcing materials.Bead
:The tire bead contains
steel wires wrapped by steel
cords that hold the tire onto
the rim.
Bias Ply Tire
:A pneumatic tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline
of the tread.
Cold Tire Pressure
:The
amount of air pressure in a tire,
measured in pounds per
square inch (psi) or kilopascals
(kPa) before a tire has built
up heat from driving. See
Inflation - Tire Pressure on
page 5-51.
Curb Weight
:The weight of a
motor vehicle with standard
and optional equipment including
the maximum capacity of fuel,
oil, and coolant, but without
passengers and cargo.
5-48 Service and Appearance Care

6. Turn the wheel wrench clockwise
to raise the jack head to the
lifting point.
{CAUTION
Getting under a vehicle when it is
jacked up is dangerous. If the
vehicle slips off the jack, you
could be badly injured or killed.
Never get under a vehicle when it
is supported only by a jack.
{CAUTION
Raising your vehicle with the jack
improperly positioned can damage
the vehicle and even make the
vehicle fall. To help avoid
personal injury and vehicle
damage, be sure to t the jack lift
head into the proper location
before raising the vehicle.7. Remove all the wheel nuts and
take off the at tire.
{CAUTION
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after time. The wheel could come
off and cause an accident. When
changing a wheel, remove any
rust or dirt from places where the
wheel attaches to the vehicle.
In an emergency, use a cloth or a
paper towel to do this; but be sure
to use a scraper or wire brush
later, if needed, to get all the rust
or dirt off. SeeChanging a Flat
Tire on page 5-66.8. Remove any rust or dirt from the
wheel bolts, mounting surfaces
and spare wheel.{CAUTION
Never use oil or grease on bolts
or nuts because the nuts might
come loose. The vehicle’s wheel
could fall off, causing a crash.
9. Put the spare tire on the
mounting surface.
10. Put the wheel nuts back on
with the rounded end of the
nuts toward the wheel
after mounting the spare.
5-74 Service and Appearance Care

Appearance Care
Interior Cleaning
The vehicle’s interior will continue to
look its best if it is cleaned often.
Although not always visible,
dust and dirt can accumulate on the
upholstery. Dirt can damage
carpet, fabric, leather, and plastic
surfaces. Regular vacuuming
is recommended to remove particles
from the upholstery. It is important
to keep the upholstery from
becoming and remaining heavily
soiled. Soils should be removed as
quickly as possible. The vehicle’s
interior may experience extremes of
heat that could cause stains to
set rapidly.
Lighter colored interiors may require
more frequent cleaning. Use care
because newspapers and garments
that transfer color to home
furnishings may also transfer color
to the vehicle’s interior.When cleaning the vehicle’s interior,
only use cleaners specically
designed for the surfaces being
cleaned. Permanent damage may
result from using cleaners on
surfaces for which they were not
intended. Use glass cleaner only on
glass. Remove any accidental
over-spray from other surfaces
immediately. To prevent over-spray,
apply cleaner directly to the
cleaning cloth.
Notice:Using abrasive cleaners
when cleaning glass surfaces
on the vehicle, could scratch the
glass and/or cause damage to
the rear window defogger.
When cleaning the glass on the
vehicle, use only a soft cloth
and glass cleaner.
Many cleaners contain solvents that
may become concentrated in the
vehicle’s breathing space. Before
using cleaners, read and adhere
to all safety instructions on the label.
While cleaning the vehicle’sinterior, maintain adequate
ventilation by opening the vehicle’s
doors and windows.
Dust may be removed from small
buttons and knobs using a small
brush with soft bristles.
Products that remove odors from
the vehicle’s upholstery and
clean the vehicle’s glass can be
obtained from your dealer/retailer.
Do not clean the vehicle using:
A knife or any other sharp object
to remove a soil from any interior
surface.
A stiff brush. It can cause
damage to the vehicle’s interior
surfaces.
Heavy pressure or aggressive
rubbing with a cleaning cloth.
Use of heavy pressure can
damage the interior and does
not improve the effectiveness of
soil removal.
Service and Appearance Care 5-83

Laundry detergents or
dishwashing soaps with
degreasers can leave residue
that streaks and attracts dirt.
For liquid cleaners, about
20 drops per gallon (3.78 L) of
water is a good guide. Use
only mild, neutral-pH soaps.
Too much cleaner that saturates
the upholstery.
Organic solvents such as naptha,
alcohol, etc. that can damage the
vehicle’s interior.
Fabric/Carpet
Use a vacuum cleaner with a soft
brush attachment frequently to
remove dust and loose dirt.
A canister vacuum with a beater bar
in the nozzle may only be used
on oor carpet and carpeted oor
mats. For any soil, always try
to remove it rst with plain water orclub soda. Before cleaning, gently
remove as much of the soil as
possible using one of the following
techniques:
For liquids: gently blot the
remaining soil with a paper towel.
Allow the soil to absorb into
the paper towel until no more
can be removed.
For solid dry soils: remove as
much as possible and then
vacuum.
To clean:
1. Saturate a lint-free, clean white
cloth with water or club soda.
2. Wring the cloth to remove excess
moisture.
3. Start on the outside edge of the
soil and gently rub toward the
center. Continue cleaning, using
a clean area of the cloth each
time it becomes soiled.4. Continue to gently rub the soiled
area until the cleaning cloth
remains clean.
5. If the soil is not completely
removed, use a mild soap
solution and repeat the cleaning
process that was used with
plain water.
If any of the soil remains, a
commercial fabric cleaner or spot
lifter may be necessary. When
a commercial upholstery cleaner or
spot lifter is to be used, test a
small hidden area for colorfastness
rst. If the locally cleaned area
gives any impression that a ring
formation may result, clean
the entire surface.
After the cleaning process has been
completed, a paper towel can be
used to blot excess moisture
from the fabric or carpet.
5-84 Service and Appearance Care

Notice:Machine compounding
or aggressive polishing on a
basecoat/clearcoat paint nish
may damage it. Use only
non-abrasive waxes and
polishes that are made for a
basecoat/clearcoat paint nish
on the vehicle.
Foreign materials such as calcium
chloride and other salts, ice melting
agents, road oil and tar, tree sap,
bird droppings, chemicals from
industrial chimneys, etc., can
damage the vehicle’s nish if
they remain on painted surfaces.
Wash the vehicle as soon as
possible. If necessary, use
non-abrasive cleaners that are
marked safe for painted surfaces
to remove foreign matter.
Exterior painted surfaces are
subject to aging, weather and
chemical fallout that can take
their toll over a period of years.To help keep the paint nish looking
new, keep the vehicle garaged or
covered whenever possible.
Protecting Exterior Bright
Metal Parts
Bright metal parts should be
cleaned regularly to keep their
luster. Washing with water is all
that is usually needed. However,
chrome polish may be used
on chrome or stainless steel trim,
if necessary.
Use special care with aluminum
trim. To avoid damaging protective
trim, never use auto or chrome
polish, steam or caustic soap
to clean aluminum. A coating of
wax, rubbed to high polish, is
recommended for all bright
metal parts.Windshield, Backglass,
and Wiper Blades
Clean the outside of the windshield
and backglass with glass cleaner.
Clean the rubber blades using a lint
free cloth or paper towel soaked with
windshield washer uid or a mild
detergent. Wash the windshield
thoroughly when you clean the
blades. Bugs, road grime, sap and
a buildup of vehicle wash/wax
treatments may cause wiper
streaking. Replace the wiper blades
if they are worn or damaged.
Wipers can be damaged by:
Extreme dusty conditions
Sand and salt
Heat and sun
Snow and ice, without proper
removal
Service and Appearance Care 5-87