Cadillac CT4 Owner's Manual page 362

Cadillac CT4 Owner Manual (GMNA-Localizing-MidEast-15283644) - 2022 -
CRC - 7/28/21
362 SERVICE AND MAINTENANCE
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 five years,
whichever comes first. See Cooling
System 0 295.
Visually inspect accessory drive
belts. Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage;
replace, if needed.
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.
Vehicles that are regularly used for
short trips of 6 km or less
If your vehicle has an Oil Life
Indicator, the indicator will show
you when to change the oil and
filter. Under severe conditions the
indicator may come on before
10 000 km. The indicator won't
detect dust in the oil, so if you drive
in a dusty area you may have to
change the oil and filter sooner
than every 10 000 km.
* Footnote: Under extreme driving
conditions listed above, it may be
necessary to replace your spark
plugs at more frequent intervals.
For further assistance in
determining the most suitable
service maintenance intervals for
your vehicle, please contact your
authorized GM Dealer.
Additional Required Services
Severe Service
Every 70 000 km
Change automatic transmission
fluid and filter.
Change front 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.
Change rear axle fluid, without
limited slip differential.
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.