Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-13336155) - 2020 - CRC - 5/6/19
90
Service and Maintenance
Maintenance
Schedule
Owner Checks and Services
See the owner
’
s manual for other
services and intervals that may be
required.
At Each Fuel Stop
.
Check the engine oil level. See
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
last service. Reset the oil life
system when the oil is changed.
See
Extended Idle Use
When the vehicle is used in a way
that requires extended idle time,
one hour of use shall be deemed
the same as 33 miles. See
for
hourmeter.
Required Services Every
12 000 km/7,500 mi
.
Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system.
See
and
.
.
Check engine coolant level. See
.
.
Visually check for fluid leaks.
.
Inspect engine air cleaner filter.
See
.
Visually inspect fuel system for
damage or leaks.
.
Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
