Chevrolet Aveo 2007 Owner's Manual page 294

How to Add Coolant to the Coolant
Surge Tank
Notice: This vehicle has a specific coolant fill
procedure. Failure to follow this procedure
could cause your engine to overheat and
be severely damaged.
If you have not found a problem yet, check to see
if coolant is visible in the surge tank. If coolant
is visible but the coolant level is not between the
Minimum and Maximum marks, add a 50/50
mixture of clean, drinkable water and DEX-COOL
coolant at the coolant surge tank, but be sure
the cooling system, including the coolant surge
tank pressure cap, is cool before you do it.
See Engine Coolant on page 287 for more
information.
If no coolant is visible in the surge tank, add
coolant as follows:
294
CAUTION:
{
Steam and scalding liquids from a hot
cooling system can blow out and burn
you badly. They are under pressure, and if
you turn the coolant surge tank pressure
cap — even a little — they can come out at
high speed. Never turn the cap when the
cooling system, including the coolant
®
surge tank pressure cap, is hot. Wait for
the cooling system and coolant surge
tank pressure cap to cool if you ever have
to turn the pressure cap.