2002 Oldsmobile Alero Owner's Manual - Page 87

To Use the Engine Coolant Heater 1. Turn off the engine. 2. Open the hood and unwrap the electrical cord. On the 2.2L L4 ECOTEC engine, the engine coolant heater cord is located in front of the coolant surge tank on the passenger's side of the engine compartment. On the 3400 V6 engine, the engine coolant heater cord is located near the engine air cleaner/filter. See "Engine Compartment Overview" in the Index for more information on location. 3. Plug it into a 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 engine parts. If you don't, it could be damaged. How long should you keep the coolant heater plugged in? The answer 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 dealer in the area where you'll be parking your vehicle. The dealer can give you the best advice for that particular area. CAUTION: 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-volt AC outlet. If the cord won't reach, use a heavy-duty three-prong extension cord rated for at least 15 amps. 2-25