Chevrolet 2001 3500HD Manual page 282

Long Trip/Highway Scheduled Maintenance
7,500 Miles (12 500 km)
j
Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service.
j
Lubricate chassis components (or every 12 months, whichever occurs first).
(See footnote #.)
j
Check rear axle fluid level and add fluid as needed.
j
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote +.)
15,000 Miles (25 000 km)
j
Change engine oil and filter (or every 12 months, whichever occurs first).
An Emission Control Service.
j
Lubricate chassis components (or every 12 months, whichever occurs first).
(See footnote #.)
j
Check rear axle fluid level and add fluid as needed.
j
Inspect shields and underhood insulation for damage or looseness. Adjust or
replace as required. This is a Noise Emission Control Service. Applicable
only to vehicles sold in the United States.
j
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote +.)
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