Chevrolet 2003 Impala Owner's Manual page 288

Notice: In cold weather, water can freeze and crack
the engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant
- - -
You can be burned if ,
-
u
spil oolant o l o t
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.
When the coolant in the coolant recovery tank is at the
COLD mark, start your vehicle.
If the overheat warning continues, there's one more
thing you can try. You can add the proper coolant
mixture directly to the radiator, but be sure the cooling
system is cool before you do
it.
The coolant recovery tank is located in the rear of the
engine compartment on the passenger's side of the
page
5-12 for more information on location.
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