Pontiac 2005 Grand Am User Manual download pdf (Page 83)

Engine Coolant Heater

Your vehicle may have this feature. In very cold weather,

0°F (−18°C) or colder, the engine coolant heater can

provide 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 (0°C), use of the

coolant heater is not required. Your vehicle may also

have an internal thermostat in the plug end of the cord.

This will prevent operation of the engine coolant heater

when the temperature is at or above 0°F (−18°C) as

noted on the cord.

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 on page 5-12 for more information on

location.

3. Plug the cord into a normal, grounded 110-volt AC

outlet.

{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 will

not 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 do not, 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 will be parking

your vehicle. The dealer can give you the best advice

for that particular area.

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Pontiac 2005 Grand Am User Manual Page 83

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