1998 Cadillac DeVille Owner's Manual - Page 93

To Use the Engine CoolantHeater 1. Turn off the engine. 2. Open the hood and unwrap electrical cord. the 3. Plug it intoa normal, grounded 110-volt AC outlet. 4. Before starting the engine, be sure to unplug and store the cord as it was before to keep it away from moving be engine parts. If you don't, it could damaged. How long should you keep the coolant heater plugged in? The answer depends on the outside temperature, the of kind of oil you have, and some other things. Instead trying tolist everything here, we ask that contact you your dealer in the area where you'll be parking your vehicle. The dealer can give you the best advicethat for particular area. Plugging the cord an ungrounded outlet into could cause an electrical shock. Also, the wrong and kind of extension cord could overheat cause a fire. You could be seriously injured. Plug the cord intoa properly grounded three-prong 110-volt AC outlet. If the cord won't reach, usea heavy-duty three-prong extension cord rated for at least 15 amps. 2-22