Cooling System - Chevrolet 2002 Astro Owner's Manual

Cooling System

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 Cooling Fan
5-10
If the coolant inside the coolant recovery tank is boiling,
don't do anything else until it cools down. The vehicle
should be parked on a level surface.
If it isn't, you may have a leak at the pressure cap or in
the radiator hoses, heater hoses, radiator, water pump or
somewhere else in the cooling system.
The coolant level should
be at the ADD mark.