GMC Yukon 2025 - Page 401

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-17942154) - 2025
400 Service and Maintenance
– High use commercial vehicles such
a
s
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
in determining the most suitable service
maintenance intervals for your vehicle,
please contact your authorized GM Dealer.
Extreme service is for vehicles mainly
driven off-road in four-wheel drive or
used in farming, mining, forestry, or
snow plowing.
Additional Required Services —
Se
vere Service
Every 72 000 km (45,000 mi)
•
Change automatic transmission fluid
and filter.
•
Change transfer case fluid, if equipped
with 4WD. 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.
Owner Checks and Services
Every Five Years
•
Replace brake fluid.
Every Seven Years
•
Replace Air Conditioning Desiccant every
seven years. The air conditioning system
requires maintenance every seven years.
This service requires replacement of the
desiccant to help the longevity and
efficient operation of the air conditioning
system. This service can be complex. See
your dealer.
Multi-Point Vehicle
In
spection (MPVI)
A Multi Point Vehicle Inspection (MPVI)
completed by atrained technician is
amaintenance assessment of your vehicle.
The benefit of the MPVI is to identify service
items that require immediate attention and
those that may require attention in the future.
The technician will perform the following
checks on your vehicle. You can obtain acopy
of the appropriate MPVI checklist on your
country’s GM Certified Service website. For
acomplete list of checks, inspections, and
services, see your dealer.
Some items may not apply to your vehicle
and/or region.
Diagnostics
•
OnStar active, if equipped
•
Service history/recall check
Engine Oil and Filter
•
Engine oil
•
Oil life monitor
– Reset oil life monitor