Hummer H2. Manual - part 2016

Inflation Pressure Conversion Chart (Kilopascals to PSI)

Tires with a higher than recommended pressure can cause the following conditions: 

z

A hard ride  

z

Tire bruising  

z

Rapid tread wear at the center of the tire  

Tires with a lower than recommended pressure can cause the following conditions: 

z

A tire squeal on turns  

z

Hard steering  

z

Rapid wear and uneven wear on the edge of the tread  

z

Tire rim bruises and tire rim rupture  

z

Tire cord breakage  

z

High tire temperatures  

z

Reduced vehicle handling  

z

High fuel consumption  

z

Soft riding  

Unequal pressure on the same axle can cause the following conditions: 

z

Uneven braking  

z

Steering lead  

z

Reduced vehicle handling  

MAINTENANCE ITEMS 

kPa

psi

kPa

psi

140

20

215

31

145

21

220

32

155

22

230

33

160

23

235

34

165

24

240

35

170

25

250

36

180

26

275

40

185

27

310

45

190

28

345

50

200

29

380

55

205

30

415

60

Conversion: 6.9 kPa=1 psi

 

2004 Hummer H2 

2004 GENERAL INFORMATION Maintenance and Lubrication - Hummer H2

  

Maintenance Items 

MAINTENANCE 

USING THE MAINTENANCE SCHEDULE 

We at General Motors want to help you keep your vehicle in good working condition. But we do not know 
exactly how you will drive it. You may drive very short distances only a few times a week. Or you may drive 
long distances all the time in very hot, dusty weather. You may use your vehicle in making deliveries. Or you 
may drive it to work, to do errands or in many other ways. 

Because of all the different ways people use their vehicles, maintenance needs vary. You may need more 
frequent checks and replacements. So please read the following and note how you drive. If you have any 
questions on how to keep your vehicle in good condition, see your GM Goodwrench dealer. 

This schedule is for vehicles that: 

z

Carry passengers and cargo within recommended limits. You will find these limits on your vehicle's 
Certification/Tire label. Refer to Label - Vehicle Certification (w/o RPO Z49) or Label - Vehicle 
Certification (w/RPO Z49) .  

z

Are driven off-road in the recommended manner.  

z

Use the recommended fuel.  

The services in Scheduled Maintenance should be performed when indicated. Refer to Additional Required 
Services and Maintenance Footnotes for further information. 

When you go to your GM Goodwrench dealer for your service needs, you'll know that GM-trained and 
supported service technicians will perform the work using genuine GM parts.

Usage

Type/Part No.

Engine Oil Filter

AC Delco/PF44

Engine Air Cleaner/Filter

AC Delco/88944151

PCV Valve

AC Delco/CV948C

Spark Plugs

Denso/PTZ16R15 
NGK/PZTR5A15

Fuel Filter

AC Delco/GF626

Wiper Blades (Front)

ITTA/15706394

Wiper Blade (Rear)

ITTA/15174476

CAUTION: Performing maintenance work on a vehicle can be dangerous. In trying to 

do some jobs, you can be seriously injured. Do your own maintenance 
work only if you have the required know-how and the proper tools and 
equipment for the job. If you have any doubt, see your GM Goodwrench(R) 
dealer to have a qualified technician do the work.

 

2004 Hummer H2 

2004 GENERAL INFORMATION Maintenance and Lubrication - Hummer H2

  

Owner Checks and Services tells you what should be checked, when to check it and what you can easily do to 
help keep your vehicle in good condition. 

The proper replacement parts, fluids and lubricants to use are listed in Fluid and Lubricant 
Recommendations and Maintenance Items . When your vehicle is serviced, make sure these are used. All 
parts should be replaced and all necessary repairs done before you or anyone else drives the vehicle. We 
recommend the use of genuine GM parts. 

SCHEDULED MAINTENANCE 

Scheduled Maintenance 

When the CHANGE ENGINE OIL light comes on, it means that service is required for your vehicle. Have your 
vehicle serviced as soon as possible within the next 600 miles (1,000 km). It is possible that, if you are driving 
under the best conditions, the engine oil life system may not indicate that vehicle service is necessary for over a 
year. However, your engine oil and filter must be changed at least once a year and at this time the system must 
be reset. Your GM Goodwrench dealer has GM-trained service technicians who will perform this work using 
genuine GM parts and reset the system. 

If the engine oil life system is ever reset accidentally, you must service your vehicle within 3,000 miles (5,000 
km) since your last service. Remember to reset the oil life system whenever the oil is changed. Refer to GM Oil 
Life System - Resetting for information on the engine Oil Life System and resetting the system. 

When the CHANGE ENGINE OIL light appears, certain services, checks and inspections are required. 
Required services are described in the following for "Maintenance I" and "Maintenance II." Generally, it is 
recommended that your first service be Maintenance I, your second service be Maintenance II and that you 
alternate Maintenance I and Maintenance II thereafter. However, in some cases, Maintenance II may be 
required more often. 

Maintenance I -Use Maintenance I if the CHANGE ENGINE OIL light comes on within ten months since 
vehicle was purchased or Maintenance II was performed. 

Maintenance II -Use Maintenance II if the previous service performed was Maintenance I. Always use 
Maintenance II whenever the light comes on ten months or more since the last service or if the light has not 
come on at all for one year. 

Scheduled Maintenance 

Service

Maintenance 
I

Maintenance 
II

Change engine oil and filter. Reset oil life system. Refer to GM Oil Life 
System - Resetting . An Emission Control Service.

X

X

Lubricate chassis components. Refer to footnote #.

X

X

Visually check for any leaks or damage. Refer to footnote (j).

X

X

Inspect engine air cleaner filter. If necessary, replace filter. Refer to Air 
Cleaner Element Replacement . An Emission Control Service. Refer to 
footnote.

X

X

 

2004 Hummer H2 

2004 GENERAL INFORMATION Maintenance and Lubrication - Hummer H2

  

ADDITIONAL REQUIRED SERVICES 

The following services should be performed at the first maintenance service (I or II) after the indicated miles 
(kilometers) shown for each item. 

Additional Required Services 

Rotate tires and check inflation pressures and wear. Refer to Tire 
Rotation .

X

X

Inspect brake system. Refer to footnote (a).

X

X

Check engine coolant and windshield washer fluid levels and add fluid as 
needed.

X

X

Perform any needed additional services. Refer to Additional Required 
Services .

X

X

Inspect suspension and steering components. Refer to footnote (b).

or

X

Inspect engine cooling system. Refer to footnote (c).

or

X

Inspect wiper blades. Refer to footnote (d).

or

X

Inspect restraint system components. Refer to footnote (e).

or

X

Lubricate body components. Refer to footnote (f).

or

X

Check transmission fluid level and add fluid as needed.

or

X

Service

25,000 
miles 
(41,500 
km)

50,000 
miles 
(83,000 
km)

75,000 
miles 
(125,000 
km)

100,000 
miles 
(166,000 
km)

125,000 
miles 
(207,500 
km)

150,000 
miles 
(240,000 
km)

Inspect fuel system for damage 
or leaks.

X

X

X

X

X

X

Inspect exhaust system for 
loose or damaged components.

X

X

X

X

X

X

Change automatic transmission 
fluid and filter (severe service). 
Refer to footnote (h).

or

X

or

X

or

X

Change automatic transmission 
fluid and filter (normal 
service).

or

or

or

X

or

or

Change transfer case fluid. 
Refer to footnote (g).

or

X

or

X

or

X

Replace engine air cleaner 
filter. Refer to Air Cleaner 
Element Replacement . An 
Emission Control Service.

or

or

or

X

or

or

Replace spark plugs and 
inspect spark plug wires. An 
Emission Control Service.

or

or

or

X

or

or

Inspect positive crankcase 

 

2004 Hummer H2 

2004 GENERAL INFORMATION Maintenance and Lubrication - Hummer H2