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(i) Drain, flush, and refill cooling system. This
service can be complex; you should have
your dealer perform this service. See Engine
Coolant on page 357 for what to use. Inspect
hoses. Clean radiator, condenser, pressure
cap, and filler neck. Pressure test the cooling
system and pressure cap.
(j) If using DOT-4 brake fluid only: Drain, flush,
and refill brake hydraulic system at a regular
maintenance service (I or II) every two years.
This service can be complex; you should
have your dealer perform this service. See
Brakes on page 372.
(k) 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.
(l) Change fluid if the vehicle is used for high
performance operation.
(m) Change fluid 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 fluid cooler. See
Message Center (CTS-V) on page 209 and
Transmission Fluid Hot Message on page 214.
(n) If you drive regularly under dusty conditions,
inspect the filter at each engine oil change.
(p) Visually inspect belt for fraying, excessive
cracks, or obvious damage. Replace belt if
necessary.
Owner Checks and Services
These owner checks and services should be
performed at the intervals specified 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 fluids or lubricants are added
to your vehicle, make sure they are the proper
ones, as shown in Recommended Fluids and
Lubricants on page 474.
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