GMC Sierra Denali 2017 Owner's Manual page 440

a year and the oil life system must
be reset. Your trained dealer
technician can perform this work.
If the engine oil life system is reset
accidentally, service the vehicle
within 5 000 km/3,000 mi since the
last service. Reset the oil life
system when the oil is changed.
See Engine Oil Life System 0 351.
Passenger Compartment Air
Filter
The passenger compartment air
filter removes dust, pollen, and
other airborne irritants from outside
air that is pulled into the vehicle.
The filter should be replaced as part
of routine scheduled maintenance.
Inspect the passenger compartment
air filter every 36 000 km/
22,500 miles or two years,
whichever comes first. Replace if
necessary. More frequent
replacement may be needed if the
vehicle is driven in areas with heavy
traffic, areas with poor air quality,
or areas with high dust levels.
Replacement may also be needed if
there is a reduction in air flow,
excessive window fogging, or odors.
Tire Rotation and Required
Services Every 12 000 km/
7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the
following services. See Tire
Rotation 0 398.
Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system. See Engine
Oil 0 348 and Engine Oil Life
System 0 351.
Check engine coolant level. See
Engine Coolant 0 357.
Check windshield washer fluid
level. See Washer Fluid 0 363.
Visually inspect windshield wiper
blades for wear, cracking,
or contamination. See Exterior
Care 0 427. Replace worn or
damaged wiper blades. See
Wiper Blade
Replacement 0 372.
Check tire inflation pressures.
See Tire Pressure 0 391.
Service and Maintenance
Inspect tire wear. See Tire
Inspection 0 397.
Visually check for fluid leaks.
Inspect engine air cleaner filter.
See Engine Air Cleaner/
Filter 0 355.
Inspect brake system. See
Exterior Care 0 427.
Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of wear
at least once a year. See
Exterior Care 0 427. Lubricate
the suspension and steering
components at least every other
oil change. (If equipped with
grease fittings)
Check restraint system
components. See Safety System
Check 0 65.
Visually inspect fuel system for
damage or leaks.
Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
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