Black plate (10,1)
Chevrolet/GMC Duramax Diesel Supplement (GMNA Localizing-U.S./Canada-
7132827) - 2015 - CRC - 6/5/14
9-10
Driving and Operating
{
Warning
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,
and prevent damage.
The length of time the heater should
remain plugged in depends on the
outside temperature. You may wish
to use the coolant heater to improve
ease of starting at temperatures
between
−
18°C (0°F) and
−
29°C
(
−
20°F). Keep the coolant heater
plugged in for a minimum of four
hours. At temperatures below
−
29°C
(
−
20°F), the coolant heater should
remain plugged in for at least eight
hours. It will not harm either the
coolant heater or the vehicle to
leave the coolant heater plugged in
longer than the times stated. Be
sure to store the cord before starting
the engine. See
Fuel for Diesel
Engines on page 9-21
for
information on what fuel to use in
cold weather.
Fuel Operated
Heater (FOH)
If the vehicle includes an FOH, it will
enhance heater performance and
will reduce the amount of time it
takes to warm the inside of the
vehicle in cold conditions below or
equal to 4°C (39°F). The FOH is
installed on the frame rail on the
driver side of the vehicle and uses
diesel fuel to heat the engine
coolant, which warms up the
passenger cabin air.
The FOH will turn on if all of the
following conditions exist:
.
Outside air temperature is below
or equal to 4°C (39°F).
.
Fuel level is greater or equal to
12.5% of the total fuel tank
volume.
.
The engine is running.
.
Coolant temperature is less than
75°C (167°F).
