1998 Chevrolet Venture Owner's Manual - Page 359

Thermostat You can be burned if you spill coolant on hot engine parts, Coolant contains ethylene glycol, and it will burn if the engineparts arehot enough. Don't spill coolant ona hot engine. Engine coolant temperature is controlled by a thermostat in the engine coolant system. The thermostat stops the flow of coolant through the radiator until the coolant reaches a preset temperature. When you replace your thermostat, a GM thermostat is recommended. Radiator I ressure Cap NOTICE: Your radiator cap is a 15 psi (105 kPa) pressure-type cap and must be tightly installed to prevent coolantloss and possible engine damage from overheating.Be sure the arrows on the cap line up with the overflow tube on the radiator filler neck. When you replace your radiator pressure cap, a GM cap is recommended. Power Steering Fluid 'l'kv Gower steering fluid reservoir is located to the right of the windshield washer fluid reservoir, at the back of the engine compartment.