Hummer 2003 H2 Owner's Manual page 414

Scheduled Maintenance
45,000 Miles (75 000 km)
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Inspect engine air cleaner filter if you are driving in dusty conditions. Replace
filter if necessary.
An Emission Control Service. (See footnote
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Check rear/front axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking.
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Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote +.)
50,000 Miles (83 000 km)
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Change automatic transmission fluid and 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.
If you do not use your vehicle under any of these conditions, change the fluid
and filter at 100,000 miles (166 000 km).
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Change transfer case fluid.
[
.)
DATE
ACTUAL
SERVICED BY:
MILEAGE
DATE
ACTUAL
SERVICED BY:
MILEAGE
7-11