1996 Buick Riviera Owner's Manual - Page 211

Heater and radiatorhoses, and otherengine parts, canbe very hot. Don't touch them. IPyou do, you can be burned. f Don't run theengine if there is a,leak. I you run the engine, it could lose all coolant. That could cause an engine fire, and you could be'burned. Get any leak fixed before you drive thevehicle. The coolant level should be at or above FULL COLD. If i t isn't, you may have a leakin the radiator hoses, heater pump.or somewhere else in the hoses, radiator, water cooling system. NOTICE: I _ -~ . Engine damage from running your engine without coolantisn't 'covered by your warranty. If there seems to no leak, with the engine check to ,be on, see if the electricengine fans are running. If the engine fans is overheating, both should be running. If they aren't, your vehicle needs service.