2008 GMC Sierra 1500 Pickup Owner's Manual - Page 433

Scheduled Maintenance Service Change engine oil and filter. See Engine Oil on page 5-13. Reset oil life system. See Engine Oil Life System on page 5-16. 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 5-17. See footnote (k). Rotate tires and check inflation pressures and wear. See Tire Inspection and Rotation on page 5-72 and "Tire Wear Inspection" in At Least Once a Month on page 6-10. 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 on page 6-6. 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 transfer case fluid level and add fluid as needed Maintenance I Maintenance II 6-5