GMC Sierra 3500HD 2001, Owner'S Manual, Page: 284 / 321

Long Trip/Highway Scheduled Maintenance
7-34
30,000 Miles (50 000 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. Change axle fluid if the
vehicle is driven in high
-
speed (above 40 mph or 70 km/h) conditions for
extended periods of time.
j Clean and repack the front wheel bearings
(or at each brake relining, whichever occurs first).
j Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information. (See fo.)
j Replace fuel filter.
An Emission Control Service. (See footnote
[.)
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.
ACTUAL
SERVICED BY:
MILEAGE
DATE