2009 HUMMER H3 maintenance

3. Check that the lubricant level
is up to the bottom of the ller
plug hole.
4. If the uid level is good, install
the plug and be sure it is fully
seated. If the uid level is low,
add more uid as described
in the next steps.
How to Add Fluid
Refer to the Maintenance Schedule
to determine what kind of uid to
use. SeeRecommended Fluids and
Lubricants on page 6-12.
1. Remove the ller plug.
2. Add uid at the ller plug hole.
Add only enough uid to bring
the uid level up to the bottom of
the ller plug hole.
3. Install the ller plug. Be sure the
plug is fully seated.
Hydraulic Clutch
The hydraulic clutch linkage in
the vehicle is self-adjusting.
The clutch master cylinder reservoir
is lled with hydraulic clutch uid.
The hydraulic clutch uid reservoir
cap has this symbol on it. See
Engine Compartment Overview on
page 5-10for reservoir location.
It is not necessary to regularly check
clutch uid unless a leak in the
system is suspected. Adding uid
will not correct a leak.
A uid loss in this system could
indicate a problem. Have the system
inspected and repaired.
When to Check and What
to Use
Refer to the Maintenance Schedule
to determine how often to check
the uid level in the clutch master
cylinder reservoir and for the proper
uid. SeeRecommended Fluids
and Lubricants on page 6-12.
How to Check and Add Fluid
The proper uid should be added
if the level does not reach the
bottom of the diaphragm when it is
in place in the reservoir. See the
instructions on the reservoir cap.
Service and Appearance Care 5-21

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

When parts of the braking system
are replaced — for example,
when the brake linings wear down
and new ones are installed — be
sure to get new approved
replacement parts. If this is not
done, the brakes might not work
properly. For example, if someone
puts in brake linings that are
wrong for the vehicle, the balance
between the front and rear brakes
can change — for the worse.
The braking performance expected
can change in many other ways
if the wrong replacement brake parts
are installed.Battery
This vehicle has a maintenance free
battery. When it is time for a new
battery, see your dealer/retailer
for one that has the replacement
number shown on the original
battery’s label. SeeEngine
Compartment Overview on
page 5-10for battery location.
Warning:Battery posts, terminals,
and related accessories contain
lead and lead compounds,
chemicals known to the State of
California to cause cancer and
reproductive harm. Wash hands
after handling.
Vehicle Storage
{CAUTION
Batteries have acid that can burn
you and gas that can explode.
You can be badly hurt if you
are not careful. SeeJump
Starting on page 5-34for tips
on working around a battery
without getting hurt.
Infrequent Usage: If the vehicle is
driven infrequently, remove the
black, negative (−) cable from the
battery. This helps keep the battery
from running down.
Extended Storage: For extended
storage of the vehicle, remove
the black, negative (−) cable from
the battery or use a battery
trickle charger. This helps maintain
the charge of the battery over
an extended period of time.
Service and Appearance Care 5-33

Windshield Wiper
Blade Replacement
Windshield wiper blades should be
inspected for wear and cracking.
SeeScheduled Maintenance
on page 6-4for more information.
Replacement blades come in
different types and are removed in
different ways. For proper type
and length, seeMaintenance
Replacement Parts on page 6-14.
To replace the windshield wiper
blade:
1. Lift the wiper arm away from the
windshield.2. Push the release lever (B) to
disengage the hook and push
the wiper arm (A) out of the
blade (C).
3. Push the new wiper blade
securely on the wiper arm
until you hear the release lever
click into place.
To replace the rear wiper blade,
lift the rear wiper arm from the
window and pull the blade.
Tires
Your new vehicle comes with
high-quality tires made by
a leading tire manufacturer.
If you ever have questions about
your tire warranty and where
to obtain service, see your
vehicle Warranty booklet
for details. For additional
information refer to the tire
manufacturer.
{CAUTION
Poorly maintained and
improperly used tires are
dangerous.
Overloading your
vehicle’s tires can
cause overheating as a
result of too much exing.
You could have an air-out
and a serious accident.
SeeLoading the Vehicle
on page 4-35.
(Continued)
5-44 Service and Appearance Care

Remove the valve cap from
the tire valve stem. Press the tire
gage rmly onto the valve to
get a pressure measurement.
If the cold tire ination pressure
matches the recommended
pressure on the Tire and
Loading Information label, no
further adjustment is necessary.
If the ination pressure is low,
add air until you reach the
recommended amount.
If you overll the tire, release air
by pushing on the metal stem
in the center of the tire valve.
Recheck the tire pressure
with the tire gage.
Be sure to put the valve caps
back on the valve stems.
They help prevent leaks by
keeping out dirt and moisture.Tire Pressure Monitor
System
The Tire Pressure Monitor System
(TPMS) uses radio and sensor
technology to check tire pressure
levels. The TPMS sensors monitor
the air pressure in your vehicle’s
tires and transmit tire pressure
readings to a receiver located in
the vehicle.
Each tire, including the spare
(if provided), should be checked
monthly when cold and inated to
the ination pressure recommended
by the vehicle manufacturer on
the vehicle placard or tire ination
pressure label. (If your vehicle
has tires of a different size than
the size indicated on the vehicle
placard or tire ination pressure
label, you should determine the
proper tire ination pressure
for those tires.)As an added safety feature, your
vehicle has been equipped with
a tire pressure monitoring system
(TPMS) that illuminates a low
tire pressure telltale when one or
more of your tires is signicantly
under-inated.
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inate them
to the proper pressure. Driving on a
signicantly under-inated tire
causes the tire to overheat and can
lead to tire failure. Under-ination
also reduces fuel efficiency and tire
tread life, and may affect the
vehicle’s handling and stopping
ability.
Please note that the TPMS is
not a substitute for proper tire
maintenance, and it is the driver’s
responsibility to maintain correct tire
pressure, even if under-ination
has not reached the level to trigger
illumination of the TPMS low tire
pressure telltale.
5-52 Service and Appearance Care

Tire Pressure Monitor
Operation
This vehicle may have a Tire
Pressure Monitor System (TPMS).
The TPMS is designed to warn
the driver when a low tire pressure
condition exists. TPMS sensors
are mounted onto each tire and
wheel assembly on the vehicle,
excluding the spare tire. The TPMS
sensors monitor the air pressure
in the vehicle’s tires and transmit the
tire pressure readings to a receiver
located in the vehicle.
When a low tire pressure condition
is detected, the TPMS illuminates
the low tire pressure warning light
located on the instrument panel
cluster.At the same time, a Driver
Information Center (DIC) message
is displayed on the DIC display
screen. The low tire pressure
warning light and the DIC warning
message come on at each
ignition cycle until the tires are
inated to the correct ination
pressure. For additional information
and details about the DIC operation
and displays seeDIC Operation and
Displays on page 3-34andDIC
Warnings and Messages on
page 3-37.
The low tire pressure warning light
may come on in cool weather
when the vehicle is rst started, and
then turn off as you start to drive.
This could be an early indicator that
the air pressure in the tire(s) are
getting low and need to be inated
to the proper pressure.A Tire and Loading Information
label, attached to the vehicle, shows
the size of the vehicle’s original
equipment tires and the correct
ination pressure for the vehicle’s
tires when they are cold. See
Loading the Vehicle on page 4-35,
for an example of the Tire and
Loading Information label and its
location on the vehicle. Also see
Inflation - Tire Pressure on
page 5-51.
The vehicle’s TPMS can warn you
about a low tire pressure condition
but it does not replace normal
tire maintenance. SeeTire
Inspection and Rotation on
page 5-57andTires on page 5-44.
Notice:Liquid tire sealants
could damage the Tire Pressure
Monitor System (TPMS) sensors.
Sensor damage caused by using
a tire sealant is not covered
by your warranty. Do not use
liquid tire sealants.
5-54 Service and Appearance Care

8. Proceed to the driver side rear
tire, and repeat the procedure
in Step 5.
9. After hearing the conrming horn
chirp for the driver side rear tire,
check to see if the TPMS low tire
warning light and the DIC LOW
TIRE messages have turned off.
If yes, the TPMS sensors have
been relearned. Turn the ignition
switch to LOCK/OFF.
If the low tire warning light and
the SERV TPM message on the
DIC are on after completing
Step 5 for the driver side rear tire,
the sensor relearn process has
not been successful. Turn the
ignition switch to LOCK/OFF and
repeat the matching process
beginning with Step 2.
10. Set all four tires to the
recommended air pressure level
as indicated on the Tire and
Loading Information label.
11. Put the valve caps back on the
valve stems.Tire Inspection and
Rotation
We recommend that you
regularly inspect the vehicle’s
tires, including the spare tire,
for signs of wear or damage.
SeeWhen It Is Time for
New Tires on page 5-58for
more information.
Tires should be rotated
every 5,000 to 8,000 miles
(8 000 to 13 000 km).
SeeScheduled Maintenance
on page 6-4.
The purpose of a regular tire
rotation is to achieve a uniform
wear for all tires on the vehicle.
This will ensure that the
vehicle continues to perform
most like it did when the
tires were new.Any time you notice unusual
wear, rotate the tires as soon
as possible and check wheel
alignment. Also check for
damaged tires or wheels.
SeeWhen It Is Time for
New Tires on page 5-58and
Wheel Replacement on
page 5-64.
Make sure the spare tire is
stored securely. Push, pull and
then try to rotate or turn the
tire. If it moves, use the wheel
wrench/hoist shaft to tighten
the cable. SeeChanging a
Flat Tire on page 5-66.
Service and Appearance Care 5-57

When rotating the vehicle’s tires,
always use the correct rotation
pattern shown here. Do not
include the spare tire in the tire
rotation.
After the tires have been rotated,
adjust the front and rear ination
pressures as shown on the Tire
and Loading Information label.
SeeInflation - Tire Pressure on
page 5-51andLoading the
Vehicle on page 4-35.Reset the Tire Pressure Monitor
System. SeeTire Pressure
Monitor Operation on page 5-54.
Make certain that all wheel
nuts are properly tightened.
See “Wheel Nut Torque” under
Capacities and Specifications
on page 5-96.
{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 you
change a wheel, remove any
rust or dirt from places where
the wheel attaches to the
vehicle. In an emergency, you
can 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.
When It Is Time for
New Tires
Various factors, such as
maintenance, temperatures,
driving speeds, vehicle loading,
and road conditions inuence
when you need new tires.
One way to tell when it is time for
new tires is to check the treadwear
indicators, which will appear when
the tires have only 1/16 inch
(1.6 mm) or less of tread remaining.
5-58 Service and Appearance Care