GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-MidEast-
15231009) - 2022 - CRC - 5/25/21
294
Service and Maintenance
Every 20 000 km
.
Replace front and rear wiper blades. Or
every 12 months, whichever comes first.
See
.
Every 90 000 km
.
Replace spark plugs. Inspect spark plug
wires and/or boots.
Every 120 000 km
.
Replace hood and/or body lift support gas
struts. Or every 10 years, whichever
comes first.
Every 240 000 km
.
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 five years, whichever comes first.
See
.
.
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 kilometers or less
The Oil Life Indicator will show you when
to change the oil and filter. Under severe
conditions the indicator may come on
before 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.
Every 120 000 km
.
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.
Special Application Services
.
Severe Commercial Use Vehicles Only:
Lubricate chassis components every oil
change.
