Pontiac 2007 G6 - Manual (Page 128)

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 2.4L L4 ECOTEC ® engine, the engine
coolant heater cord is located near the air
cleaner box on the passenger’s side of the
engine compartment. On the 3.5L, 3.6L and
3.9L V6 engines, the engine coolant heater
cord is located on the driver’s side around
the battery box. See Engine Compartment
Overview on page 318 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.
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