cooling HUMMER H2 2009 Owner's Manual

If you need to replace any of your wheels, wheel bolts,
wheel nuts, or Tire Pressure Monitor System (TPMS)
sensors, replace them only with new GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts, wheel nuts, and TPMS
sensors for your vehicle.
{CAUTION:
Using the wrong replacement wheels, wheel bolts,
or wheel nuts on your vehicle can be dangerous. It
could affect the braking and handling of your
vehicle, make your tires lose air and make you
lose control. You could have a collision in which
you or others could be injured. Always use the
correct wheel, wheel bolts, and wheel nuts for
replacement.
Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance, and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-80for more
information.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on the vehicle is dangerous.
You cannot know how it has been used or how far
it has been driven. It could fail suddenly and
cause a crash. If you have to replace a wheel, use
a new GM original equipment wheel.
Tire Chains
Notice:Use tire chains only where legal and only
when you must. Use chains that are the proper size
for the vehicle’s tires. Install them on the tires of
the rear axle. Do not use chains on the tires of the
front axle. Tighten them as tightly as possible
with the ends securely fastened. Drive slowly and
follow the chain manufacturer’s instructions. If
you can hear the chains contacting the vehicle, stop
and retighten them. If the contact continues, slow
down until it stops. Driving too fast or spinning the
wheels with chains on will damage the vehicle.
5-77

Fuses Usage
50 Cooling Fan 1 (J-Case)
51Electronically Controlled Air
Suspension (J-Case)
52Vehicle Stability System, Antilock
Brake System-1 (J-Case)
53 Cooling Fan 2 (J-Case)
54 Starter (J-Case)
55Stud 2 Trailer Brake Module
(J-Case)
56Left Bussed Electrical Center 1
(J-Case)
57Heated Windshield Washer System
(J-Case)
58 Four-Wheel Drive System (J-Case)
59Stud 1 Trailer Connector Battery
Power (J-Case)Fuses Usage
60Mid Bussed Electrical Center 1
(J-Case)
61 Climate Control Blower (J-Case)
62Left Bussed Electrical Center 2
(J-Case)
Relays Usage
A/C CMPRSR Air Conditioning Compressor
FAN CNTRL Cooling Fan Control
FAN HI Cooling Fan High Speed
FAN LO Cooling Fan Low Speed
HDLP LO Low-Beam Headlamp
PRK LAMP Parking Lamps
PWR/TRN Powertrain
REAR DEFOG Rear Defogger
RUN/CRNK Switched Power
STRTR Starter
5-116

Capacities and Specications
Please refer toRecommended Fluids and Lubricants on page 6-13for more information.
Capacities and Specications
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134aFor the air conditioning system refrigerant charge
amount, see the refrigerant caution label located
under the hood. See your dealer/retailer for more
information.
Cooling System
SUT Model 15.4 qt 14.6 L
SUV Model 16.7 qt 15.8 L
Engine Oil with Filter 6.0 qt 5.7 L
Fuel Tank 32.0 gal 121.0 L
Transfer Case Fluid 1.5 qt 1.4 L
Transmission Fluid (Pan Removal and Filter Replacement) 6.0 qt 5.7 L
Wheel Nut Torque 140 lb ft 190Y
All capacities are approximate. When adding, be sure to ll to the approximate level, as recommended in this
manual.
Engine Specications
Engine VIN Code Transmission Spark Plug Gap
6.2L V8 2 Automatic 0.040 in (1.01 mm)
5-117

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 5-15. Reset oil life system.
SeeEngine Oil Life System on page 5-18.An Emission Control Service.••
Lubricate chassis components.See footnote #.••
Visually check for any leaks or damage.See footnote (j).••
For vehicles driven in dusty/dirty conditions: Inspect engine air cleaner lter.
If necessary, replace lter. SeeEngine Air Cleaner/Filter on page 5-20.•
Rotate tires and check ination pressures and wear. SeeTire Inspection and
Rotation on page 5-69and “Tire Wear Inspection” inAt Least Once a Month on
page 6-10.••
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.•
6-5

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.
(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.
6-7

(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 5-31 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.
(l)Severe Service: Change transfer case fluid if the
vehicle is mainly used for trailer towing or driven in city
traffic, wet environment, or high ambient temperatures.
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 6-13.
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 5-15.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOL®
coolant mixture if necessary. SeeEngine Coolant
on page 5-31.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer uid reservoir and add the proper uid if
necessary.
6-9

Chains, Tire...................................................5-77
Charging System Light....................................3-35
Check
Engine Lamp..............................................3-40
Checking Things Under the Hood......................5-11
Chemical Paint Spotting.................................5-108
Child Restraints
Child Restraint Systems...............................1-47
Infants and Young Children...........................1-43
Lower Anchors and Tethers for Children..........1-51
Older Children.............................................1-40
Securing a Child Restraint in a
Rear Seat Position...................................1-62
Securing a Child Restraint in the
Right Front Seat Position..........................1-64
Where to Put the Restraint...........................1-50
Cigarette Lighter.............................................3-21
Cleaning
Aluminum Wheels......................................5-107
Exterior Lamps/Lenses................................5-106
Fabric/Carpet............................................5-103
Finish Care...............................................5-106
Instrument Panel, Vinyl, and Other
Plastic Surfaces.....................................5-104
Interior.....................................................5-102
Leather....................................................5-104
Speaker Covers.........................................5-105
Tires........................................................5-108
Underbody Maintenance.............................5-108
Washing Your Vehicle.................................5-105Cleaning (cont.)
Weatherstrips............................................5-105
Windshield, Backglass, and Wiper Blades......5-107
Wood Panels............................................5-104
Climate Control System
Dual Automatic............................................3-22
Outlet Adjustment........................................3-27
Rear Air Conditioning and Heating System,
Electronic................................................3-28
Clock............................................................
3-21
Clock, Setting.................................................3-73
Collision Damage Repair..................................7-11
Compass.......................................................3-54
Content Theft-Deterrent....................................2-24
Control of a Vehicle.......................................... 4-3
Coolant
Engine.......................................................5-31
Engine Temperature Gage............................3-39
Cooling System..............................................5-27
Cruise Control................................................3-12
Cruise Control Light........................................3-44
Cupholders....................................................2-64
Customer Assistance Information
Courtesy Transportation................................7-10
Customer Assistance for
Text Telephone (TTY) Users........................ 7-6
Customer Assistance Offices........................... 7-6
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-7
Reporting Safety Defects to General Motors....7-15
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