Scheduled Maintenance (cont’d)
Service MaintenanceIMaintenanceII
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and add uid as
needed.••
Perform any needed additional services. See “Additional Required Services”
in this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
Replace passenger compartment air lter.See footnote (g).•
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(h)Change automatic transmission uid and lter
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 high performance operation.
If you do not use your vehicle under any of these
conditions, the uid and lter do not require
changing.
(i)Drain, ush, and re ll cooling system.
This service can be complex; you should have
your dealer perform this service. See Engine
Coolant on page 356 for what to use. Inspect
hoses. Clean radiator, condenser, pressure cap,
and ller neck. Pressure test the cooling
system and pressure cap.
(j)If using DOT-4 brake uid only: Drain, ush,
and re ll brake hydraulic system at a regular
maintenance service (IorII) every two years.
This service can be complex; you should have
your dealer perform this service. See Brakes
on page 371.(k)A uid loss in any vehicle system could
indicate a problem. Have the system inspected
and repaired and the uid level checked. Add uid
if needed.
(l)Change uid if the vehicle is used for high
performance operation.
(m)Change uid whenever the vehicle has been
driven for 3,000 miles (5 000 km) with the
transmission temperature at 290°F (143°C) or
higher without using an auxiliary uid cooler.
See Message Center (CTS-V) on page 215 and
Transmission Fluid Hot Message on page 219.
(n)If you drive regularly under dusty conditions,
inspect the lter at each engine oil change.
(p)Visually inspect belt for fraying, excessive
cracks, or obvious damage. Replace belt if
necessary.
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Owner Checks and Services
These owner checks and services should be
performed at the intervals speci ed to help ensure
the safety, dependability, and emission control
performance of your vehicle. Your GM
Goodwrench
®dealer can assist you with these
checks and services.
Be sure any necessary repairs are completed at
once. Whenever any uids or lubricants are added
to your vehicle, make sure they are the proper
ones, as shown inRecommended Fluids and
Lubricants on page 473.
At Each Fuel Fill
It is important to perform these underhood checks
at each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil
if necessary. SeeEngine Oil on page 346for
further details.
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 your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary.
SeeEngine Coolant on page 356for further
details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the
windshield washer uid reservoir and add
the proper uid if necessary.
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