Cadillac XT6 2023 Owner's Manual page 456

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 96 000 km (60,000 mi)
Replace spark plugs. Inspect
spark plug wires and/or
boots. (2.0L Engine)
Every 156 000 km
(97,500 mi)
Replace spark plugs. Inspect
spark plug wires and/or
boots. (3.6L Engine)
Every 161 000 km
(100,000 mi)
Replace hood and/or body
lift support gas struts. Or
every 10 years, whichever
comes first. See Gas Strut(s)
0 388.
Every 240 000 km
(150,000 mi)
Change rear axle fluid,
if equipped with AWD. Do
not directly power wash the
transfer case and/or front/
rear axle output seals. High
pressure water can
overcome the seals and
contaminate the transfer
case fluid. Contaminated
fluid will decrease the life of
the transfer case and/or
axles and should be
replaced.
Drain and fill engine cooling
system. Or every six years,
whichever comes first. See
Cooling System 0 376.
Severe Conditions
Requiring More Frequent
Maintenance*
Public service, military,
or commercial use vehicles
to include the following:
Ambulances, police cars,
and emergency rescue
vehicles.
Service and Maintenance
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.
Vehicles that are regularly
used for short trips of 6 km
(4 mi) or less.
The oil life indicator will show
you when to change the oil
and filter. Under severe
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