1997 Buick Riviera Owner's Manual - Page 84

To Use the Coolant Heater 1. Turn off the engine. 2. Open the hood and unwrap the electrical cord...1utl3. 4. Before starting me engine, be sure unplug to and store the cord as it was before to keep away it I f from moving engine parts. you don't,it could be damaged. How long should you keep the coolant heater plugged in? The answer dependson the outside temperature, the of kind of oil you have, and some other things. Instead trying to list everything here, we ask that you contact in your Buick dealer the area where you'll be parking your vehicle.The dealer can give you best advice for the that particular area. I A CAL rION. I Plugging the cord into ungrounded outlet an could causean electricalshock. Also, the wrong kind of extension cord could overheat and cause a fire. You could be seriously injured. Plug the cord intoa properly grounded three-prong 110-volt AC outlet. If the cordwon't reach, use a heavy-duty three-prong extension cord rated for at least 15 amps. 2-23