2009 HUMMER H2 check engine light

Keep a record with all parts receipts and list the
mileage and the date of any service work performed.
SeeMaintenance Record on page 6-17.
Adding Equipment to the Outside of
the Vehicle
Things added to the outside of the vehicle can affect the
airow around it. This can cause wind noise and can
affect fuel economy and windshield washer performance.
Check with your dealer/retailer before adding equipment
to the outside of the vehicle.
Fuel
Use of the recommended fuel is an important part of
the proper maintenance of this vehicle. To help keep the
engine clean and maintain optimum vehicle performance,
we recommend the use of gasoline advertised as
TOP TIER Detergent Gasoline.
This vehicle can use either unleaded gasoline or
ethanol fuel containing up to 85% ethanol (E85).
SeeGasoline Octane on page 5-5and
Fuel E85 (85% Ethanol) on page 5-7.
Gasoline Octane
Use premium unleaded gasoline with a posted octane
rating of 91 or higher. You can also use regular unleaded
gasoline rated at 87 octane or higher, but the vehicle’s
acceleration could be slightly reduced, and you might
notice a slight audible knocking noise, commonly referred
to as spark knock. If the octane is less than 87, you might
notice a heavy knocking noise when you drive. If this
occurs, use a gasoline rated at 87 octane or higher as
soon as possible. Otherwise, you could damage the
engine. If you are using gasoline rated at 87 octane or
higher and you hear heavy knocking, the engine needs
service.
Gasoline Specications
At a minimum, gasoline should meet ASTM specication
D 4814 in the United States or CAN/CGSB-3.5 or 3.511
in Canada. Some gasolines contain an octane-enhancing
additive called methylcyclopentadienyl manganese
tricarbonyl (MMT). We recommend against the use of
gasolines containing MMT. SeeAdditives on page 5-6for
additional information.
5-5

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
3

Electrical System (cont.)
Power Windows and Other Power Options....5-110
Underhood Fuse Block...............................5-113
Windshield Wiper Fuses.............................5-110
Electronic Immobilizer
PASS-Key
®III+...........................................2-25
Electronic Immobilizer Operation
PASS-Key
®III+...........................................2-26
Electronically Controlled Air Suspension System . . . 4-53
Engine
Air Cleaner/Filter.........................................5-20
Check and Service Engine Soon Lamp...........3-40
Coolant......................................................5-31
Coolant Heater............................................2-31
Coolant Temperature Gage...........................3-39
Drive Belt Routing.......................................6-16
Engine Compartment Overview......................5-14
Exhaust.....................................................2-45
Oil .............................................................5-15
Oil Life System...........................................5-18
Overheated Protection Operating Mode...........5-35
Overheating................................................5-33
Starting......................................................2-29
Entry/Exit Lighting...........................................3-18
Event Data Recorders.....................................7-17
Extender, Safety Belt.......................................1-39
Exterior Lamps...............................................3-15
F
Filter
Engine Air Cleaner......................................5-20
Finish Damage.............................................5-108
First Aid Kit....................................................4-42
Fixed Mast Antenna.......................................3-130
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-79
Flat Tire, Changing.........................................5-80
Flat Tire, Storing.....................................5-95, 5-98
Fluid
Automatic Transmission................................5-23
Power Steering...........................................5-36
Windshield Washer......................................5-37
Folding Rear Seat...........................................1-11
Four-Wheel Drive............................................5-48
Four-Wheel Drive, Full-Time.............................2-37
Front Axle......................................................5-49
Front Mounted Receiver...................................4-43
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Driving for Better Economy............................. 4-2
E85 (85% Ethanol)........................................ 5-7
Filling a Portable Fuel Container....................5-10
5

Fuel (cont.)
Filling the Tank............................................. 5-8
Fuels in Foreign Countries.............................. 5-8
Gage .........................................................3-45
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Low Warning Light.......................................3-46
Fuses
Center Instrument Panel Fuse Block.............5-112
Fuses and Circuit Breakers.........................5-110
Instrument Panel Fuse Block.......................5-111
Underhood Fuse Block...............................5-113
Windshield Wiper.......................................5-110
G
Gage
Engine Coolant Temperature.........................3-39
Fuel..........................................................3-45
Oil Pressure...............................................3-42
Speedometer..............................................3-31
Tachometer.................................................3-31
Voltmeter Gage...........................................3-36
Garage Door Opener.......................................2-57
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Glove Box.....................................................2-64
GM Mobility Reimbursement Program.................. 7-7
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-2
Headlamps....................................................5-51
Bulb Replacement.......................................5-50
Daytime Running Lamp........................3-16, 5-52
Exterior Lamps............................................3-15
Flash-to-Pass............................................... 3-9
Front Turn Signal and Parking Lamps.............5-52
Halogen Bulbs............................................5-50
High/Low Beam Changer................................ 3-9
On Reminder..............................................3-16
Roof Marker Lamps.....................................5-53
Heated Seats................................................... 1-6
Heated Steering Wheel..................................... 3-7
Heater
Engine Coolant...........................................2-31
Heater...........................................................3-22
Highbeam On Light.........................................3-44
Highway Hypnosis...........................................4-35
Hill and Mountain Roads..................................4-36
Hood
Checking Things Under................................5-11
Release.....................................................5-12
Horn ............................................................... 3-6
How to Wear Safety Belts Properly...................1-25
6

O
Odometer......................................................3-31
Odometer, Trip...............................................3-31
Off-Road Driving.............................................4-15
Off-Road Recovery..........................................4-13
Oil
Engine.......................................................5-15
Pressure Gage............................................3-42
Pressure Light.............................................3-43
Oil, Engine Oil Life System..............................5-18
Older Children, Restraints................................1-40
Online Owner Center........................................ 7-5
OnStar, Privacy..............................................7-18
OnStar
®System, see OnStar®Manual...............2-54
Operation, Universal Home Remote System........2-58
Outlet Adjustment............................................3-27
Outlets
Accessory Power.........................................3-20
Outside
Automatic Dimming Mirror.............................2-48
Convex Mirror.............................................2-49
Heated Mirrors............................................2-49
Power Foldaway Mirrors...............................2-47
Overheated Engine Protection Operating Mode . . . 5-35
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
P
Paint, Damage..............................................5-108
Park
Shifting Into................................................2-43
Shifting Out of............................................2-44
Park Aid........................................................2-50
Park Brake....................................................2-42
Park Tilt Mirrors..............................................2-48
Parking
Over Things That Burn.................................2-45
Passing.........................................................4-13
PASS-Key
®III+ Electronic Immobilizer...............2-25
PASS-Key®III+ Electronic Immobilizer
Operation...................................................2-26
Perchlorate Materials Requirements, California...... 5-4
Phone
Bluetooth
®................................................3-107
Power
Door Locks.................................................2-11
Electrical System.......................................5-110
Lumbar Controls........................................... 1-5
Reclining Seatbacks...................................... 1-8
Retained Accessory.....................................2-29
Seat............................................................ 1-4
Steering Fluid.............................................5-36
Windows....................................................2-20
9