1993 Cadillac DeVille Owner's Manual - Page 90

q D.RIUNG THROUGH DEEP STANDING WATER ENGINE BLOCK HEATER (OPTION) In very cold weather, O°F (-18OC) or colder, the engine block heater can help. You'll get easier starting and better fuel economy during engine warm-up. To use the block heater: 1. Turn off the engine. 2. Open the hood and unwrap the electrical cord. 3. Plug it into a normal, grounded 110-volt outlet. A CAUTION: I I Plugging the cord into an ungrounded outlet could cause an electrical shock. Also, the wrong kind of extension cord could overheat and cause a fire. You could be seriously injured. Plug the cord into a properly grounded three-prong 110-voltoutlet. If the cord won't reach, use a heavy-duty three-prong extension cord rated for at least 15 amps. 77