Saturn 2007 AURA Green Line Hybrid Owner's Manual page 361

(g) 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.
(h) Change automatic transmission fluid and filter
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.
If you do not use your vehicle under any of these
conditions, the fluid and filter do not require
changing.
(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 272 for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap, and filler neck. Pressure test the cooling
system and pressure cap.
(j) A fluid loss in any vehicle system could indicate
a problem. Have the system inspected and
repaired and the fluid level checked. Add fluid if
needed.
(k) If you drive regularly under dusty conditions,
inspect the filter at each engine oil change.
(m) Visually inspect belt for fraying, excessive
cracks, or obvious damage. Replace belt if
necessary.
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