Chevrolet Suburban Heavy-Duty Package (GMNA-Localizing-U.S./Canada/
Mexico-9419415) - 2016 - CRC - 9/4/15
Service and Maintenance
43
.
Vehicles that are regularly used
for short trips of 6 km (3.7 mi)
or less
* Footnote: Under extreme
driving conditions listed above, it
may be necessary to replace the
spark plugs at more frequent
intervals. For further assistance
in determining the most suitable
service maintenance intervals for
your vehicle, contact your
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
—
Severe Service
Every 40 000 km/25,000 mi
.
Change transfer case fluid. 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 fluid.
Contaminated fluid will decrease
the life of the transfer case and/
or drive axles and should be
replaced.
