GMC 2007 Yukon XL Owner's Manual page 556

Scheduled Maintenance
Service Maintenance I Maintenance II
Change engine oil and filter. See Engine Oil on page 438. Reset oil life system.
See Engine Oil Life System on page 441. An Emission Control Service.
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 on page 443. See footnote (l).
Rotate tires and check inflation pressures and wear. See Tire Inspection and
Rotation on page 497 and "Tire Wear Inspection" in At Least Once a Month on
page 561.
Inspect brake system. See footnote (a).
Check engine coolant and windshield washer fluid levels and add fluid as
needed.
Perform any needed additional services. See "Additional Required Services" in
this section.
Inspect suspension and steering components. See footnote (b).
Inspect engine cooling system. See footnote (c).
Inspect wiper blades. See footnote (d).
Inspect restraint system components. See footnote (e).
Lubricate body components. See footnote (f).
Check transmission fluid level and add fluid as needed.
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