Cadillac 2015 Escalade Owner's Manual page 381

11-4 Service and Maintenance
Every 72 000 km or if Necessary
Automatic transmission fluid and
filter change (severe service) for
vehicles mainly driven in heavy
city traffic in hot weather, in hilly
or mountainous terrain, when
frequently towing a trailer,
or used for taxi, police,
or delivery service.
Four-wheel drive only: Transfer
case fluid change (severe
service) for vehicles mainly
driven in heavy city traffic in hot
weather, in hilly or mountainous
terrain, when frequently towing a
trailer, or used for taxi, police,
or delivery service. During any
maintenance, if a power washer
is used to clean mud and dirt
from the underbody, care should
be taken to not directly spray the
transfer case 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
should be replaced.
Check vent hose at transfer
case for kinks and proper
installation. Check to be sure
vent hose is unobstructed, clear,
and free of debris. During any
maintenance, if a power washer
is used to clean mud and dirt
from the underbody, care should
be taken to not directly spray the
transfer case 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
should be replaced.