GMC Yukon 2021 Owner's Manual page 385

384 Service and Maintenance
The Tire Rotation and Required Services are
the responsibility of the vehicle owner. It is
recommended to have your dealer perform
these services every 12 000 km/7,500 mi.
Proper vehicle maintenance helps to keep
the vehicle in good working condition,
improves fuel economy, and reduces vehicle
emissions.
Because of the way people use vehicles,
maintenance needs vary. There may need to
be more frequent checks and services. The
Additional Required Services - Normal are for
vehicles that:
Carry passengers and cargo within
recommended limits on the Tire and
Loading Information label. See Vehicle
Load Limits 0 222.
Are driven on reasonable road surfaces
within legal driving limits.
Use the recommended fuel. See
Recommended Fuel (5.3L Engine) 0 277 or
Recommended Fuel (6.2L Engine) 0 277.
Refer to the information in the Maintenance
Schedule Additional Required Services -
Normal chart.
The Additional Required Services - Severe are
for vehicles that are:
Mainly driven in heavy city traffic in hot
weather
Mainly driven in hilly or mountainous
terrain
Frequently towing a trailer
Used for high speed or competitive
driving
Used for taxi, police, or delivery service
Refer to the information in the Maintenance
Schedule Additional Required Services -
Severe chart.
Warning
Performing maintenance work can be
dangerous and can cause serious injury.
Perform maintenance work only if the
required information, proper tools, and
equipment are available. If they are not,
see your dealer to have a trained
technician do the work. See Doing Your
Own Service Work 0 310.
Maintenance Schedule
Owner Checks and Services
Check the engine oil level. See Engine Oil
0 315.
Once a Month
Check the tire inflation pressures,
including the spare. See Tire Pressure
0 345.
Inspect the tires for wear. See Tire
Inspection 0 350.
Check the windshield washer fluid level.
See Washer Fluid 0 324.
Engine Oil Change
When the CHANGE ENGINE OIL SOON
message displays, have the engine oil and
filter changed within the next 1 000 km/
600 mi. If driven under the best conditions,
the engine oil life system may not indicate
the need for vehicle service for up to a year.
The engine oil and filter must be changed at
least once 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