1997 Pontiac Grand Prix Owner's Manual - Page 92

Engine Coolant Heater (Option) Plugging the cord into an ungrounded outlet could cause an electrical shock. Also, the wrong kind of extension cord could overheat cause and a fire. You could be seriously injured. Plug the cord into a properly grounded three-prong 110-volt AC outlet. If the cord won't reach, use a heavy-duty three-prong extension cord rated for at least 15 amps. In very cold weather, 0°F (- 18"C) colder, the engine or coolant heater can help. You'll get easierstarting and better €uel economy during engine warm-up. Usually, the coolant heater should be plugged in a minimum of four hours prior to starting your vehicle. 4. Before starting the engine, be sure to unplug and store the cord as it was before to keep it away from moving engine parts. If you don't, it could be damaged. How long should you keep the coolant heaterplugged To Use tl Coolant Heater 1. T r off the engine. un 2. Open the hood and unwrap the electrical cord. in? Theanswer depends on the outside temperature, the kind of oil you have, and some other things, Instead of trying to list everything here, we ask that you contact your Pontiac dealer in the area where you'll beparking your vehicle. The dealer can give you the best advice for that particular area. 3. Plug it into a normal, grounded 110-volt AC outlet. 2-18