1996 GMC Savana Van Owner's Manual - Page 201

A CAUTIO1 .. 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 drive thevehicle. you How to Add Coolant to the Coolant Recovery Tank If you haven't found a problem yet, but the coolant level isn't at the FULL COLD mark, add a 50150 mixture of clean water (preferably distilled) and DEX-COOL (orange-colored, silicate-free) antifreeze at coolant the recovery tank. (See "Engine Coolant" in the Index for more information.) I NOTICE: Engine damage from running your engine without coolant isn't covered by 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. Adding only plain water your cooling system to can be dangerous. Plain water, or some other liquid like alcohol, can boil before the proper coolant mix will. Your vehicle's coolant warning system is set for the proper coolant With mix. plain water or the wrong mix, your engine coul get too hot but wouldn't get the overheat you warning. Your engine could catch fire and or you others could be burned. a 50/50 mix of clean Use water and DEX-COOL antifreeze. TM 5-13