Pontiac 1993 Grand Am Owner's Manual page 185

Problems on the Road
,
Engine Overheating
(CONT.)
2. Then keep turning the pressure cap,
and remove it.
Once the pressure cap is off, look
inside the surge
tank
opening and
look for a small cylinder at the base
of the opening. This should be
covered with coolant. If the cylinder
is uncovered, the coolant in your
system is low.
184
3. Fill the coolant surge
tank
with the
proper mix, up to FULL COLD, or
just above the small cylinder at the
base of the opening.
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. Watch out for the
engine fan.
By this time, the coolant level inside
the coolant surge
tank
may be lower.
If the level is lower, add more of the
proper mix to the coolant surge
tank
until the level reaches F'ULL COLD,
or just above the small cylinder at the
base of the opening.