Seats and Restraint Systems ........................... 1-1Front Seats ............................................... 1-2Rear Seats ............................................... 1-7Safety Belts ............................................. 1-16Child Restraints ....................................... 1-36Airbag System ......................................... 1-58Restraint System Check ............................ 1-69

Features and Controls ..................................... 2-1Keys ........................................................ 2-3Doors and Locks ....................................... 2-8Windows ................................................. 2-17Theft-Deterrent Systems ............................ 2-21Starting and Operating Your Vehicle ........... 2-24Mirrors .................................................... 2-40OnStar System ...................................... 2-45HomeLink Wireless Control System ........... 2-47Storage Areas ......................................... 2-51Sunroof .................................................. 2-59Vehicle Personalization ............................. 2-61

Instrument Panel ............................................. 3-1Instrument Panel Overview .......................... 3-4Climate Controls ...................................... 3-20Warning Lights, Gages, and Indicators ........ 3-26Driver Information Center (DIC) .................. 3-43Audio System(s) ....................................... 3-60

Driving Your Vehicle ....................................... 4-1Your Driving, the Road, and Your Vehicle ..... 4-2Towing ................................................... 4-64

Service and Appearance Care .......................... 5-1Service ..................................................... 5-3Fuel ......................................................... 5-5Checking Things Under the Hood ................. 5-9All-Wheel Drive ........................................ 5-43Rear Axle ............................................... 5-44Front Axle ............................................... 5-44Bulb Replacement .................................... 5-45Windshield Wiper Blade Replacement ......... 5-51Tires ...................................................... 5-52Appearance Care ..................................... 5-90Vehicle Identification ................................. 5-99Electrical System .................................... 5-100Capacities and Specifications ................... 5-110

Maintenance Schedule ..................................... 6-1Maintenance Schedule ................................ 6-2

Customer Assistance and Information .............. 7-1Customer Assistance and Information ........... 7-2Reporting Safety Defects ........................... 7-10

Index ................................................................ 1

2005 HUMMER H2 Owner Manual M

GENERAL MOTORS, GM, the GM Emblem, HUMMER,the name HUMMER, H2 and the H2 Design areregistered trademarks of General Motors Corporation.

This manual includes the latest information at the time itwas printed. We reserve the right to make changesafter that time without further notice. For vehicles firstsold in Canada, substitute the name General Motors ofCanada Limited for HUMMER whenever it appearsin this manual.

Keep this manual in the vehicle, so it will be there if it isneeded while on the road. If the vehicle is sold, leavethis manual in the vehicle.

Canadian OwnersA French language copy of this manual can be obtainedfrom your dealer or from:

Helm, IncorporatedP.O. Box 07130Detroit, MI 48207

How to Use This ManualMany people read the owner manual from beginning toend when they first receive their new vehicle. If thisis done, it can help you learn about the featuresand controls for the vehicle. Pictures and words worktogether in the owner manual to explain things.

IndexA good place to quickly locate information about thevehicle is the Index in the back of the manual. It is analphabetical list of what is in the manual and thepage number where it can be found.

Litho in U.S.A.Part No. 05H2 B First Edition 2004 General Motors Corporation. All Rights Reserved.

ii

Safety Warnings and SymbolsThere are a number of safety cautions in this book. Weuse a box and the word CAUTION to tell about thingsthat could hurt you if you were to ignore the warning.

{CAUTION:

These mean there is something that could hurtyou or other people.

In the caution area, we tell you what the hazard is.Then we tell you what to do to help avoid or reduce thehazard. Please read these cautions. If you do not,you or others could be hurt.

You will also find a circlewith a slash through it inthis book. This safetysymbol means Do Not,Do Not do this or Do Notlet this happen.

iii

Vehicle Damage WarningsAlso, in this manual you will find these notices:

Notice: These mean there is something that coulddamage your vehicle.

A notice tells about something that can damage thevehicle. Many times, this damage would not be coveredby your vehicles warranty, and it could be costly. Butthe notice will tell what to do to help avoid the damage.

When you read other manuals, you might seeCAUTION and NOTICE warnings in different colors or indifferent words.

There are also warning labels on the vehicle. They usethe same words, CAUTION or NOTICE.

Vehicle SymbolsThe vehicle has components and labels that usesymbols instead of text. Symbols are shown along withthe text describing the operation or informationrelating to a specific component, control, message,gage, or indicator.

If you need help figuring out a specific name of acomponent, gage, or indicator, reference the followingtopics:

Seats and Restraint Systems in Section 1 Features and Controls in Section 2 Instrument Panel Overview in Section 3 Climate Controls in Section 3 Warning Lights, Gages, and Indicators in Section 3 Audio System(s) in Section 3 Engine Compartment Overview in Section 5

iv

These are some examples of symbols that may be found on the vehicle:

v

NOTES

vi

Front Seats ......................................................1-2Power Seats ..................................................1-2Power Lumbar ...............................................1-3Heated Seats .................................................1-4Reclining Seatbacks ........................................1-5Head Restraints .............................................1-6

Rear Seats .......................................................1-7Heated Seats .................................................1-760/40 Split Bench Seat ...................................1-7Third Row Seat (SUV) ...................................1-10

Safety Belts ...................................................1-16Safety Belts: They Are for Everyone ................1-16Questions and Answers About Safety Belts ......1-21How to Wear Safety Belts Properly .................1-22Driver Position ..............................................1-22Safety Belt Use During Pregnancy ..................1-29Right Front Passenger Position .......................1-30Rear Seat Passengers ..................................1-30Rear Safety Belt Comfort Guides for Children

and Small Adults .......................................1-33Safety Belt Extender .....................................1-35

Child Restraints .............................................1-36Older Children ..............................................1-36Infants and Young Children ............................1-39Child Restraint Systems .................................1-42

Where to Put the Restraint .............................1-45Top Strap ....................................................1-46Top Strap Anchor Location .............................1-47Lower Anchorages and Top Tethers for

Children (LATCH System) ...........................1-49Securing a Child Restraint Designed for the

LATCH System .........................................1-51Securing a Child Restraint in a Rear Seat

Position ...................................................1-52Securing a Child Restraint in the Right

Front Seat Position ....................................1-54Airbag System ...............................................1-58

Where Are the Airbags? ................................1-60When Should an Airbag Inflate? .....................1-61What Makes an Airbag Inflate? .......................1-63How Does an Airbag Restrain? .......................1-63What Will You See After an Airbag Inflates? .....1-64Airbag Off Switch ..........................................1-65Servicing Your Airbag-Equipped Vehicle ...........1-68Adding Equipment to Your Airbag-Equipped

Vehicle ....................................................1-69Restraint System Check ..................................1-69

Checking the Restraint Systems ......................1-69Replacing Restraint System Parts After

a Crash ...................................................1-70

Section 1 Seats and Restraint Systems

1-1

Front Seats

Power Seats

The power seat controls are located on the outboardedge of the front seats.

Horizontal Control: This control adjusts the seatcushion.

Raise or lower the front of the seat by raising orlowering the forward edge of the control. Raiseor lower the rear of the seat by raising or loweringthe rear edge of the control.

Move the seat forward or rearward by moving thewhole control toward the front or toward the rearof the vehicle.

Lower or raise the entire seat cushion by movingthe whole control up or down.

Vertical Control: This control adjusts the seatback.

Move the reclining