1997 GMC Suburban Owner's Manual - Page 254

I Heater and radiator hoses, and other engine parts, can be very hot. Don't touch them. If you do, you can be burned. Don't run the engine there is a leak. If you run if the engine, it could all coolant. That could lose cause an engine fire, and could be burned. you Get any leak fixed before you drive thevehicle. The coolant level should be at or above the COLD mark. If it isn't, you may have a leak in the radiator hoses, heater hoses, radiator, water pump or somewhere else in the cooling system. I NOTICE: ~~ Engine damage from running your engine by without coolant isn't covered your warranty. If there seems to be no leak, start the engine again. See if the 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. 5-14