GMC Sierra 2014 Owner's Manual page 476

11-4 Service and Maintenance
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 on page 10-68.
Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system. See Engine
Oil on page 10-11 and Engine
Oil Life System on page 10-14.
Check engine coolant level. See
Engine Coolant on page 10-21.
Check windshield washer fluid
level. See Washer Fluid on
page 10-28.
Visually inspect windshield wiper
blades for wear, cracking,
or contamination. See Exterior
Care on page 10-97. Replace
worn or damaged wiper blades.
See Wiper Blade Replacement
on page 10-38.
Check tire inflation pressures.
See Tire Pressure on
page 10-62.
Inspect tire wear. See Tire
Inspection on page 10-68.
Visually check for fluid leaks.
Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter on
page 10-18.
Inspect brake system.