GMC Duramax Diesel 2015 Owner's Manual page 106

Maintenance
Schedule
Owner Checks and Services
At Each Fuel Stop
Check the engine oil level. See
Engine Oil on page 10-6.
Once a Month
Check the tire inflation
pressures. See Tire Pressure
in the owner manual.
Inspect the tires for wear. See
Tire Inspection in the owner
manual.
Check the windshield washer
fluid level. See Washer Fluid in
the owner manual.
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 might not
indicate the need for vehicle service
for more than 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
last service. Reset the oil life
system when the oil is changed.
See Engine Oil Life System on
page 10-9.
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 in the owner manual.
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 10-6 and Engine Oil
Life System on page 10-9.
Service and Maintenance
Check engine coolant level. See
Engine Coolant on page 10-18.
Check windshield washer fluid
level. See Washer Fluid in the
owner manual.
Visually inspect windshield wiper
blades for wear, cracking,
or contamination. See Exterior
Care in the owner manual.
Replace worn or damaged wiper
blades. See Wiper Blade
Replacement in the owner
manual.
Check tire inflation pressures.
See Tire Pressure in the owner
manual.
Inspect tire wear. See Tire
Inspection in the owner manual.
Visually check for fluid leaks.
Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter on
page 10-15.
Inspect brake system.
11-3