maintenance HUMMER H3 2009 Owner's Guide

Scheduled Maintenance
When the CHANGE OIL message
displays in the Driver Information
Center (DIC), service is required for
the vehicle. SeeDIC Warnings
and Messages on page 3-37. Have
the vehicle serviced as soon as
possible within the next 600 miles
(1 000 km). It is possible that, if
driving under the best conditions,
the engine oil life system may
not indicate that vehicle service is
necessary for over a year. However,
the engine oil and lter must be
changed at least once a year and
at this time the system must be
reset. Your dealer/retailer has
trained service technicians who will
perform this work using genuine
parts and reset the system.If the engine oil life system is ever
reset accidentally, service the
vehicle within 3,000 miles
(5 000 km) since the last service.
Remember to reset the oil life
system whenever the oil is changed.
SeeEngine Oil Life System on
page 5-15for information on
the Engine Oil Life System and
resetting the system.
When the CHANGE OIL message
appears, certain services, checks,
and inspections are required.
Required services are described in
the following for “MaintenanceI”
and “MaintenanceII.” Generally, it is
recommended that the rst service
be MaintenanceI, the second
service be MaintenanceII, and then
alternate MaintenanceIand
MaintenanceIIthereafter. However,
in some cases, MaintenanceII
may be required more often.MaintenanceI—Use
MaintenanceIif the CHANGE
OIL message displays within
10 months since the vehicle was
purchased or MaintenanceII
was performed.
MaintenanceII—Use
MaintenanceIIif the previous
service performed was
MaintenanceI. Always use
MaintenanceIIwhenever the
message displays 10 months or
more since the last service or if the
message has not come on at all
for one year.
6-4 Maintenance Schedule

Scheduled Maintenance
ServiceMaintenanceIMaintenance II
Change engine oil and lter. See Engine Oil on page 5-13. Reset oil life system.
See Engine Oil Life System on page 5-15 .An Emission Control Service. ••
Lubricate chassis components. See footnote #. ••
Visually check for any leaks or damage. See footnote (j). ••
Inspect engine air cleaner lter. If necessary, replace lter. See Engine Air
Cleaner/Filter on page 5-17 . •
Rotate tires and check ination pressures and wear. See Tire Inspection and
Rotation on page 5-57 and “Tire Wear Inspection” in At Least Once a Month
on page 6-9. ••
Inspect brake system. See footnote (a). ••
Check engine coolant and windshield washer uid levels and add uid as
needed. ••
Perform any needed additional services. See “Additional Required Services”
in this section. ••
Inspect suspension and steering components. See footnote (b). •
Inspect engine cooling system. See footnote (c). •
Inspect wiper blades. See footnote (d). •
Inspect restraint system components. See footnote (e). •
Lubricate body components. See footnote (f). •
Check transmission uid level and add uid as needed. •
Maintenance Schedule 6-5

Additional Required Services
The following services should be performed at the rst maintenance service (Ior II) after the indicated miles
(kilometers) shown for each item.
Additional Required Services
Service and Miles (Kilometers) 25,000
(40 000) 50,000
(80 000) 75,000
(120 000) 100,000
(160 000) 125,000
(200 000) 150,000
(240 000)
Inspect fuel system for damage or leaks. • •••••
Inspect exhaust system for loose or
damaged components. • •••••
Replace engine air cleaner lter.
See Engine Air Cleaner/Filter on
page 5-17. •••
Change automatic transmission uid
and lter (severe service).
See footnote (h). •••
Change automatic transmission uid
and lter (normal service). •
Change transfer case uid.
See footnote (g). •••
Replace spark plugs and inspect spark
plug wires. An Emission Control
Service. •
6-6 Maintenance Schedule

Additional Required Services (cont’d)
Service and Miles (Kilometers)25,000
(40 000) 50,000
(80 000) 75,000
(120 000) 100,000
(160 000) 125,000
(200 000) 150,000
(240 000)
Engine cooling system service (or every
ve years, whichever occurs rst).
An Emission Control Service.
See footnote (i). •
Inspect engine accessory drive belt.
An Emission Control Service.
See footnote (k). •
Maintenance Footnotes
#
Lubricate the front suspension,
steering linkage, and parking brake
cable guides. Control arm ball
joints require lubrication but should
not be lubricated unless their
temperature is 10°F (-12°C) or
higher, or they could be damaged.
(a) Visually inspect brake lines
and hoses for proper hook-up,
binding, leaks, cracks, chafing, etc.
Inspect disc brake pads for wear
and rotors for surface condition.
Inspect other brake parts, including
calipers, parking brake, etc. (b)
Visually inspect front and rear
suspension and steering system
for damaged, loose, or missing
parts, signs of wear or lack
of lubrication. Inspect power steering
lines and hoses for proper hook-up,
binding, leaks, cracks, chafing,
etc. Visually check constant velocity
joints, rubber boots and axle
seals for leaks. Rotate and inspect
U-joints, retainers, and bolts on
rear drive shaft for seizing or
loosening. (c)
Visually inspect hoses and have
them replaced if they are cracked,
swollen, or deteriorated. Inspect
all pipes, fittings, and clamps;
replace with genuine parts as
needed. To help ensure proper
operation, a pressure test of
the cooling system and pressure
cap and cleaning the outside of
the radiator and air conditioning
condenser is recommended at least
once a year.
Maintenance Schedule 6-7

(d)Inspect wiper blades for wear,
cracking, or contamination.
Clean the windshield and wiper
blades, if contaminated. Replace
wiper blades that are worn or
damaged. See Windshield Wiper
Blade Replacement on page 5-44
and Windshield, Backglass,
and Wiper Blades on page 5-87
for more information.
(e)Make sure the safety belt
reminder light and safety belt
assemblies are working properly.
Look for any other loose or
damaged safety belt system parts.
If you see anything that might
keep a safety belt system from doing
its job, have it repaired. Have any
torn or frayed safety belts replaced.
Also see Checking the Restraint
Systems on page 1-60.
(f)Lubricate all key lock cylinders,
hood latch assembly, secondary
latch, pivots, spring anchor, release
pawl, rear compartment hinges,
outer endgate handle pivot points,
rear door detent link, rollermechanism, endgate handle pivot
points, latch bolt, fuel door hinge,
locks, and folding seat hardware.
More frequent lubrication may
be required when exposed to a
corrosive environment. Applying
silicone grease on weatherstrips
with a clean cloth will make
them last longer, seal better, and
not stick or squeak.
(g)Check vent hose at transfer
case for kinks and proper
installation.
(h)Change automatic transmission
fluid and filter if the vehicle is
mainly driven under one or more of
these conditions:
In heavy city traffic where the
outside temperature regularly
reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer
towing.
Uses such as found in taxi,
police, or delivery service.(i)Drain, flush, and refill cooling
system. This service can be
complex; you should have your
dealer/retailer perform this service.
See Engine Coolant on page 5-23
for what to use. Inspect hoses.
Clean radiator, condenser,
pressure cap, and filler neck.
Pressure test the cooling system
and pressure cap.
(j)A fluid loss in any vehicle system
could indicate a problem. Have the
system inspected and repaired
and the fluid level checked. Add fluid
if needed.
(k)Visually inspect belt for fraying,
excessive cracks, or obvious
damage. Replace belt if necessary.
6-8 Maintenance Schedule

Owner Checks and
Services
These owner checks and services
should be performed at the
intervals specied to help ensure
vehicle safety, dependability,
and emission control performance.
Your dealer/retailer can assist
with these checks and services.
Be sure any necessary repairs are
completed at once. Whenever
any uids or lubricants are added
to the vehicle, make sure they
are the proper ones, as shown
inRecommended Fluids and
Lubricants on page 6-12.
At Each Fuel Fill
It is important to perform these
underhood checks at each fuel fill.
Engine Oil Level Check
Notice:It is important to check
the engine oil regularly and
keep it at the proper level.
Failure to keep the engine oil
at the proper level can cause
damage to the engine not covered
by the vehicle warranty.
Check the engine oil level and
add the proper oil if necessary.
SeeEngine Oil on page 5-13.
Engine Coolant Level Check
Check the engine coolant level
and add DEX-COOL®coolant
mixture if necessary. SeeEngine
Coolant on page 5-23.
Windshield Washer Fluid
Level Check
Check the windshield washer uid
level in the windshield washer
uid reservoir and add the proper
uid if necessary.
At Least Once a Month
Tire Ination Check
Inspect the vehicle’s tires and make
sure they are inated to the correct
pressures. Do not forget to check
the spare tire. SeeInflation - Tire
Pressure on page 5-51. Check to
make sure the spare tire is stored
securely. SeeChanging a Flat Tire
on page 5-66.
Tire Wear Inspection
Tire rotation may be required for
high mileage highway drivers prior to
the Engine Oil Life System service
notication. Check the tires for
wear and, if necessary, rotate the
tires. SeeTire Inspection and
Rotation on page 5-57.
Maintenance Schedule 6-9

At Least Once a Year
Starter Switch Check
{CAUTION
When you are doing this
inspection, the vehicle could move
suddenly. If the vehicle moves,
you or others could be injured.
1. Before starting this check, be
sure there is enough room
around the vehicle.
2. Firmly apply both the parking
brake and the regular brake.
SeeParking Brake on page 2-28.
Do not use the accelerator
pedal, and be ready to turn off
the engine immediately if it starts.3. For automatic transmission
vehicles, try to start the engine
in each gear. The vehicle
should start only in P (Park) or
N (Neutral). If the vehicle starts
in any other position, contact
your dealer/retailer for service.
For manual transmission
vehicles, put the shift lever in
Neutral, push the clutch
pedal down halfway, and try to
start the engine. The vehicle
should start only when the clutch
pedal is pushed down all the
way to the oor. If the vehicle
starts when the clutch pedal
is not pushed all the way down,
contact your dealer/retailer
for service.
Automatic Transmission Shift
Lock Control System Check
{CAUTION
When you are doing this
inspection, the vehicle could move
suddenly. If the vehicle moves,
you or others could be injured.
1. Before starting this check, be
sure there is enough room
around the vehicle. It should be
parked on a level surface.
2. Firmly apply the parking brake.
SeeParking Brake on page 2-28.
Be ready to apply the regular
brake immediately if the vehicle
begins to move.
3. With the engine off, turn the
ignition to ON/RUN, but do not
start the engine. Without applying
the regular brake, try to move
the shift lever out of P (Park) with
normal effort. If the shift lever
moves out of P (Park), contact
your dealer/retailer for service.
6-10 Maintenance Schedule

Ignition Transmission Lock
Check
While parked, and with the parking
brake set, try to turn the ignition
to LOCK/OFF in each shift lever
position.
For automatic transmission
vehicles, the ignition should turn
to LOCK/OFF only when the
shift lever is in P (Park).
The ignition key should
come out only in LOCK/OFF.
For manual transmission
vehicles, the ignition key should
come out only in LOCK/OFF.
Contact your dealer/retailer if service
is required.
Parking Brake and Automatic
Transmission P (Park)
Mechanism Check
{CAUTION
When you are doing this check,
the vehicle could begin to move.
You or others could be injured
and property could be damaged.
Make sure there is room in front
of the vehicle in case it begins to
roll. Be ready to apply the regular
brake at once should the vehicle
begin to move.
Park on a fairly steep hill, with the
vehicle facing downhill. Keeping
your foot on the regular brake, set
the parking brake.
To check the parking brake’s
holding ability: With the engine
running and transmission in
N (Neutral), slowly remove footpressure from the regular brake
pedal. Do this until the vehicle
is held by the parking brake only.
To check the P (Park)
mechanism’s holding ability:
With the engine running, shift to
P (Park). Then release the
parking brake followed by the
regular brake.
Contact your dealer/retailer if
service is required.
Underbody Flushing Service
At least every spring, use plain
water to ush any corrosive
materials from the underbody.
Take care to clean thoroughly
any areas where mud and other
debris can collect.
Maintenance Schedule 6-11

Recommended Fluids and Lubricants
Fluids and lubricants identied below by name, part number, or specication can be obtained from your dealer/retailer.
UsageFluid/Lubricant
Engine Oil Engine oil which meets GM Standard GM6094M and displays the
American Petroleum Institute Certied for Gasoline Engines starburst
symbol. To determine the proper viscosity for your vehicle’s engine,
see
Engine Oil on page 5-13 .
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL
®
Coolant. See
Engine Coolant on page 5-23 .
Hydraulic Brake System Delco
®Supreme 11 Brake Fluid or equivalent DOT-3 brake uid.
Windshield Washer Optikleen
®Washer Solvent.
Hydraulic Power Steering System GM Power Steering Fluid (GM Part No. U.S. 89021184,
in Canada 89021186).
Automatic Transmission DEXRON
®-VI Automatic Transmission Fluid.
Manual Transmission Manual Transmission Fluid (GM Part No. U.S. 89021806,
in Canada 89021807).
Hydraulic Clutch System Hydraulic Clutch Fluid (GM Part No. U.S. 12345347, in Canada 10953517)
or equivalent DOT-3 brake uid.
Key Lock Cylinders Multi-Purpose Lubricant, Superlube (GM Part No. U.S. 12346241,
in Canada 10953474).
6-12 Maintenance Schedule

UsageFluid/Lubricant
Chassis Lubrication Chassis Lubricant (GM Part No. U.S. 12377985, in Canada 88901242) or
lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Front and Rear Axle SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 89021677,
in Canada 89021678) meeting GM Specication 9986115.
Transfer Case DEXRON
®-VI Automatic Transmission Fluid.
Front Axle Propshaft Spline Spline Lubricant, Special Lubricant (GM Part No. U.S. 12345879,
in Canada 10953511) or lubricant meeting requirements of GM 9985830.
Hood Hinges Multi-Purpose Lubricant, Superlube (GM Part No. U.S. 12346241,
in Canada 10953474).
Outer Endgate Handle Pivot Points Multi-Purpose Lubricant, Superlube (GM Part No. U.S. 12346241,
in Canada 10953474).
Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. U.S. 3634770, in Canada 10953518)
or Dielectric Silicone Grease (GM Part No. U.S. 12345579,
in Canada 992887).
Weatherstrip Squeaks Synthetic Grease with Teon, Superlube (GM Part No. U.S. 12371287,
in Canada 10953437).
Maintenance Schedule 6-13