1997 Chevrolet Lumina Owner's Manual - Page 257

Radiator Pressure Cap I'urning the radiator pressure cap when the engine and radiator are can allow steam and hot scalding liquids blow out and burn you badly. to With the coolant recovery tank, you will almost never have to coolant at the radiator. Never add turn the radiator pressure cap even a little when the engine and radiator are hot. 1 NOTICE: Your radiator cap is a 15 psi (105 kPa) pressure-type cap and must be tightly installed to prevent coolant loss possible engine damage and from overheating.Be sure the arrows on the cap line up with the overflow tube on the radiator filler neck. I -- -- When you replace your radiator pressure an AC@ cap, cap is recommended. Thermostat You can be burned if you spill coolant hot on engine parts. Coolant contains ethylene glycol, and it will burn if the engineparts are hot enough. Don't spill coolant a hot engine. on Engine coolant temperature is controlled by a thermostat in the engine coolant system.The thermostat stops the flow of coolant throughthe radiator until the coolant reaches a preset temperature. AC@thermostat When you replace your thermostat, an is recommended. 6-25