1998 Chevrolet Express Van Owner's Manual - Page 216

Heater and radiatorhoses, and other engine parts, canbe very hot. Don't touch them. If you do, you can be burned. if Don't run the engine there is a leak. If you run the engine, it could lose all coolant. That could cause an engine fire, and could be burned. you Get any leak fixed before you drive the vehicle. If it isn't, you may have a leak in theradiator hoses, heater hoses, radiator, water pump or somewhere else in the cooling system. NOTICE: I I Engine damage from running your engine without coolantisn't covered by your warranty. I If there seems to beno leak, start the engine again. See if the engine cooling fan speed increases when idle speed is doubled by pushing the accelerator pedal down. If it doesn't, your vehicle needs service. Turn off the engine. 5-15