Chevrolet 1995 S-10 Pickup Owner's Manual page 195

When you decide it's
safe to lift the hood,
here's what you'll see:
A. Coolant recovery
tank
B. Radiator pressure
cap
C. Engine fan
If the coolant inside the coolant recovery tank is boiling, don't do anything
else
until it cools down.
The coolant level should be at the ADD mark. If it isn't, you may have a
leak in the radiator hoses, heater hoses, radiator, water pump or somewhere
else in the cooling system.
5-12