Oldsmobile 2003 Alero Owner's Manual page 90

3400 V6 Engine
In very cold weather, 0°F (-18°C) or colder, the engine
coolant heater, if your vehicle has this feature, 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.
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 ECOTECTM 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 on page 5-12 for more information on
location.
3. Plug
it
into a normal, grounded 1 IO-volt AC
outlet.
Plugging the cord into an ungrounded ou' t
could cause an electrical shock. Also, the
wrong kind of extension cord could overheat
injured. Plug the cord into a properly grounded
three-prong 11 0-volt AC outlet. If the cord
won't reach, use a heavy-duty three-prong
extension cord rated for at least 15 amps.
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