Cadillac 2007 CTS, Owner'S Manual, Page: 369 / 518

4. With the coolant surge tank pressure cap off,
start the engine and let it run until you can
feel the upper radiator hose getting hot. The
upper radiator hose is the top hose coming
out of the radiator, on the passenger’s side of
the vehicle. Watch out for the engine
cooling fans.
By this time, the coolant level inside the
coolant surge tank may be lower. If the level is
lower, add more of the proper mixture to the
coolant surge tank until the level reaches
the FULL COLD/FROID line on the side of the
coolant surge tank.
5. Then replace the pressure cap. Be sure the
pressure cap is hand-tight and fully seated.
Recheck the coolant level in the bottle, the next
time you use your vehicle to insure the system is
full when cold. See
Engine Coolant on page 357 .
Power Steering Fluid
See Engine
Compartment Overview
on page 342
for the
location of the power
steering fluid reservoir.
When to Check Power Steering Fluid
It is not necessary to regularly check power
steering fluid unless you suspect there is a leak in
the system or you hear an unusual noise. A
fluid loss in this system could indicate a problem.
Have the system inspected and repaired.
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