Cadillac CTS 2013 Owner's Manual page 295

2. Keep turning the pressure cap
slowly and remove it.
3. Fill the coolant surge tank with
the proper mixture, to slightly
above the FROID/FULL COLD
line on the side of the coolant
surge tank.
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
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
FROID/FULL COLD line on the
side of the coolant surge tank.
Vehicle Care
5. Replace the pressure cap. Be
sure the pressure cap is
hand-tight and fully seated.
Notice: If the pressure cap is not
tightly installed, coolant loss and
possible engine damage may
occur. Be sure the cap is properly
and tightly secured.
Recheck the coolant level in the
bottle next time you use your
vehicle to ensure the system is full
when cold.
Checking Coolant in the
Intercooler System (CTS-V)
The vehicle must be on a level
surface when checking the coolant
level.
The supercharged engine
intercooler coolant fill neck is in the
engine compartment on the
passenger side of the vehicle. See
Engine Compartment Overview on
page 10 5.
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