GMC duramax diesel 2016 Supplement Manual page 120

Service and Maintenance 119
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.
(2) Or every five years, whichever
comes first. See Cooling
System 0 104.
(3) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage;
replace, if needed.
(4) 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.