GMC Sierra Classic 2007 Owner's Manual page 615

Change engine oil and filter. See Engine Oil (Gasoline Engine) on page 482.
Reset oil life system. See Engine Oil Life System (Gasoline Engine) on
page 485. An Emission Control Service.
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Allison Transmission only: Replace external transmission filter at the first
maintenance service performed on the vehicle.
Lubricate chassis components. See footnote #.
Visually check for any leaks or damage. See footnote (j).
Inspect engine air cleaner filter or change indicator (if equipped). If necessary,
replace filter. See Engine Air Cleaner/Filter (Gasoline Engines) on page 487.
See footnote (p).
Rotate tires and check inflation pressures and wear. See Tire Inspection and
Rotation on page 549 and "Tire Wear Inspection" in At Least Once a Month on
page 622.
Inspect brake system. See footnote (a).
Check engine coolant and windshield washer fluid levels and add fluid
as needed.
Scheduled Maintenance
Service Maintenance I Maintenance II
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