Buick 2009 Enclave - Manual (Page 374)

(i) Drain, flush, and refill cooling
system. This service can be
complex; you should have your
dealer/retailer perform this service.
See Engine Coolant on page 5-18 for
what to use. Inspect hoses. Clean
radiator, condenser, pressure cap,
and filler neck. Pressure test the
cooling system and pressure cap.
(j) Check system for interference or
binding and for damaged or missing
parts. Replace parts as needed.
Replace any components that have
high effort or excessive wear. Do not
lubricate accelerator or cruise control
cables.
(k) Visually inspect belt for fraying,
excessive cracks, or obvious
damage. Replace belt if necessary.
(l) If driving regularly under dusty
conditions, inspect the filter at each
engine oil change.
(m) Change transfer case fluid if the
vehicle is mainly driven under
one or more of these conditions:
− In heavy city traffic where
the outside temperature regularly
reaches 90°F (32°C) or higher.
− In hilly or mountainous terrain.
− When doing frequent trailer
towing.
− Uses such as found in taxi, police,
or delivery service.
Owner Checks and
Services
These owner checks and services
should be performed at the intervals
specified to help ensure vehicle
safety, dependability, and emission
control performance. Your dealer/
retailer can assist with these checks
and services.
Be sure any necessary repairs are
completed at once. Whenever any
fluids or lubricants are added to the
vehicle, make sure they are the
proper ones, as shown in
Recommended Fluids and
Lubricants on page 6-11.
At Each Fuel Fill
It is important to perform these
underhood checks at each fuel fill.
Engine Oil Level Check
Notice: It is important to check
the engine oil regularly and keep it
at the proper level. Failure to keep
the engine oil at the proper level
can cause damage to the engine
not covered by the vehicle
warranty.
Check the engine oil level and add
the proper oil if necessary. See
Engine Oil on page 5-12.
Engine Coolant Level Check
Check the engine coolant level
and add DEX-COOL
® coolant
mixture if necessary. See Engine
Coolant on page 5-18.
Windshield Washer Fluid
Level Check
Check the windshield washer fluid
level in the windshield washer
fluid reservoir and add the proper
fluid if necessary.
6-8 Maintenance Schedule