1997 Buick Riviera Owner's Manual - Page 216

If No Steam Is Coming From Your Engine If you get the overheat warning but see or hear no stearn, the problem may not be serious. Sometimes too the engine can get a little too hot when you: If you no longer have the overheat warning, you can drive. Just to be safe, drive slowerfor about 10 minutes. If the warning doesn't come back you can on, drive normally. Climb a longhill on a hot day. Stop after high-speed driving. 0 If the warning continues,pull over, stop, and park your vehicle right away. Idle for long periods in traffic. Tow a trailer. If you get the overheat warning with sign of steam, no ty this for a minute or r so: 1. Turn off your air conditioner. 2. T r on your heater tofull hot at the highest fan un speed and openthe window as necessary. If there's still no signof steam, youcan idle the engine for two or three minutes while you're parked, tosee if the warning stops. But then, you still have the if warning, turn oflthe engine and get everyone out o the vehicle until it cools down. f You may decide not to the hood but toget service lift help right away. 3. If you're in a trafficjam, shift to NEUTRAL (N); otherwise, shiftto the highest gear while driving -- AUTOMATIC OVERDRIVE or THIRD (3). (a) 5-15