GMC Terrain 2025 - Page 291

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-18552429) - 2025
290 Service and Maintenance
•
W
h
en the REPLACE AT NEXT OIL CHANGE
message displays, the engine air filter
should be replaced at the next engine oil
change. When the REPLACE ENGINE AIR
FILTER SOON message displays, the engine
air filter should be replaced at the earliest
convenience. Reset the engine air filter life
system after the engine air filter is replaced.
See Engine Air Filter Life System 3230.
Every 36 000 km (22,500 mi)
•
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. 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 96 000 km (60,000 mi)
•
Replace spark plugs. Inspect spark plug
wires and/or boots.
Every 161 000 km (100,000 mi)
•
Re
place hood and/or body lift support gas
struts. Or every 10 years, whichever comes
first. See Gas Strut(s) 3241.
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 3231.
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
du
ty 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
conditions the indicator may come on
before 12 000 km (7,500 mi).
* Footnote: Under extreme driving
conditions listed above, it may be necessary
to replace your spark plugs at more
frequent intervals. For further assistance