GMC Savana 2011 Owner's Manual page 372

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11-6
Service and Maintenance
First Engine Oil Change After
Every 160 000 km/100,000 Miles
Automatic transmission fluid
change (normal service). See
Automatic Transmission Fluid
(4-Speed Transmission) on
page 10 15 or Automatic
Transmission Fluid (6-Speed
Transmission) on page 10 17.
All wheel drive only: Transfer
case fluid change (normal
service). 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.
Spark plug replacement and
spark plug wires inspection. An
Emission Control Service.
I n f o r ma t i o n P r o v i d e d b y :
First Engine Oil Change After
Every 240 000 km/150,000 Miles
Engine cooling system
drain, flush, and refill (or
every five years, whichever
occurs first). See Engine
Coolant on page 10 22. An
Emission Control Service.
Engine drive belts inspection
for fraying, excessive cracks,
or obvious damage (or every
10 years, whichever occurs
first). Replace, if needed.

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