Cadillac 2016 CTS Manual page 332

Engine air cleaner filter
replacement or every 20 000 km/
12,500 Miles. If driving in dusty
conditions, inspect the filter at
each oil change or more often as
needed. See Engine Air Cleaner/
Filter 0 263.
Every 40 000 km/25,000 Miles
Passenger compartment air filter
replacement (or every
24 months, whichever occurs
first). More frequent replacement
may be needed if the vehicle is
driven in areas with heavy traffic,
poor air quality, areas with high
dust levels or are sensitive to
environmental allergens. Cabin
Air Filter replacement may also
be needed if you notice reduced
airflow, windows fogging up,
or odors. Your local GM Service
location can help you determine
when it is the right time to
replace your filter.
Every 72 000 km/45,000 Miles
Replace brake fluid (or every
three years, whichever occurs
first).
Rear axle fluid (If equipped with
limited slip).
Every 80 000 km/50,000 Miles
Evaporative control system
inspection. Check all fuel and
vapor lines and hoses for proper
hook-up, routing, and condition.
Every 96 000 km/60,000 Miles
Replace spark plugs. Inspect
spark plug wires. (2.0L LTG and
3.6L LF3 Turbo Engines)
Every 156 000 km/97,500 Miles
Replace spark plugs. Inspect
spark plug wires. (3.6L LGX and
6.2L LT4 Engines)
Every 240 000 km/150,000 Miles
Engine cooling system drain and
refill (or every five years,
whichever occurs first). See
Cooling System 0 264. An
Emission Control Service.
Engine drive belts inspection for
fraying, excessive cracks,
or obvious damage (or every
10 years, whichever occurs
first). Replace, if needed.
Service and Maintenance
Severe Conditions Requiring
More Frequent Maintenance*
Public service, military,
or commercial use vehicles to
include the following:
Ambulances, police cars and
emergency rescue vehicles.
Civilian vehicles such as light
duty pick-up trucks, SUVs and
passenger cars that are used
in military applications.
Recovery vehicles such as
tow trucks and flatbed single
vehicle carriers or any vehicle
that is consistently used in
towing trailers or other loads.
High use commercial vehicles
such as courier delivery
vehicles, private security patrol
vehicles or any vehicles that
operate on a 24 hour basis.
Any vehicle consistently
operated in a high sand or
dust environment such as
those used on oil pipelines
and similar applications.
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