2003 Pontiac Grand Prix Owner's Manual - Page 90

Engine Coolant Heater To Use the Engine Coolant Heater \ 1. Turn off the engine. 2. Open the hood and unwrap the electrical cord. The cord is located below the engine air cleaner/filter near the coolant reservoir bottle. See Engine Comparfment Overview on page 5-12 for more information on location. 3. Plug it into a normal, grounded 1IO-volt AC outlet. Your vehicle may be equipped with an engine coolant heater. In very cold weather, 0°F (-18°C) or colder, the engine coolant heater can help. You'll get easier starting and better fuel economy during engine warm-up. Usually, the coolant heater should be plugged in a minimum of four hours prior to starting your vehicle. At temperatures above 32°F (OOC), use of the coolant heater is not required. Plugging the cord into ungrounded outlet an 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-volt AC outlet. If the cord won't reach, use a heavy-duty three-prong extension cord rated for at least 15 amps. 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. 2-23