2003 Chevrolet S10 Pickup Owner's Manual - Page 299

When the coolant in the coolant recovery tank is at the ADD mark, start your vehicle. If the overheat warning continues, there's one more thing you can try. You can add the proper mixture directly to the radiator, but be sure the cooling system is cool before you do it. I .- You can ? burned if you spil. -oolant on I.- : 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. I 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 radiator pressure cap -- even a little -- they can come out at high speed. Never turn the cap when the cooling system, including the radiator pressure cap, is hot. Wait for the cooling system and radiator pressure cap to cool if you ever have to turn the pressure cap. I 5-36