Surge Tank Pressure Cap - Cadillac 1996 DeVille Owner's Manual

Adding Coolant
If you need more coolant, add the proper mix at the
surge tank, but only when the engine is cool.
I
A
CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
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When replacing the pressure cap, make sure it is tight.
Surge Tank Pressure Cap
I
NOTICE:
The surge tank cap is a 15 psi (105 kPa)
pressure-type cap and
must be
tightly instalfed to
prevent coolant loss and possible engine damage
from overheating. Be sure the arrows on
the
cap line up.
If the surge t a n k pressure cap needs
to
be replaced, a
General Motors cap is recommended.
Thermostat
Engine coolant temperature is controlled by a thermostat
in the engine coolant system. The thermostat stops the
flow of coolant through the radiator until the coolant
reaches a preset temperature.
If
your
thermostat needs to be replaced, a General
Motors thermostat is recommended.