Hummer 2003 H2 Owner's Manual page 413

Scheduled Maintenance
30,000 Miles (50 000 km)
j
Check rear/front axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking.
j
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote +.)
j
Replace fuel filter.
An Emission Control Service. (See footnote
j
Replace engine air cleaner filter.
An Emission Control Service.
37,500 Miles (62 500 km)
j
Check rear/front axle fluid level and add fluid as needed. Check constant
velocity joints and axle seals for leaking.
j
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote +.)
7-10
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