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Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-13336148) - 2020 - CRC - 9/5/19
58
Service and Maintenance
Maintenance Schedule
Additional Required
Services - Normal
12
000
km/7,500
mi
24
000
km/15,000
mi
36
000
km/22,500
mi
48
000
km/30,000
mi
60
000
km/37,500
mi
72
000
km/45,000
mi
84
000
km/52,500
mi
96
000
km/60,000
mi
108
000
km/67,500
mi
120
000
km/75,000
mi
132
000
km/82,500
mi
144
000
km/90,000
mi
156
000
km/97,500
mi
168
000
km/105,000
mi
180
000
km/1
12,500
mi
192
000
km/120,000
mi
204
000
km/127,500
mi
216
000
km/135,000
mi
228
000
km/142,500
mi
240
000
km/150,000
mi
Perform Required Services. Check engine oil
level and oil life percentage. Change engine oil
and filter, if needed. Check engine air filter life per-
centage and status. Change engine air filter,
if needed.
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If the vehicle is not equipped with the engine air
filter life system, replace engine air cleaner
filter. (1)
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Drain and fill engine cooling system. (2)
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Visually inspect accessory drive belts. (3)
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Replace oil pump belt. (4)
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Replace fuel filter. (5)
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Footnotes
—
Maintenance
Schedule Additional Required
Services - Normal
(1)
Or every four years, whichever
comes first. If driving in dusty
conditions, inspect the filter at each
oil change or more often as needed.
See
.
(2)
Or every five years, whichever
comes first. See
or
.
(3)
Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage;
replace, if needed.
(4)
Or every 15 years, whichever
comes first.
(5)
Or every two years, or when the
CHANGE FUEL FILTER message in
the Driver Information Center (DIC)
comes on, whichever comes first.
The fuel filter may need to be
replaced more often based on
biodiesel usage, driving in climates
with severe dust, off-road driving,
or towing a trailer for extended
periods.