To Use The Engine Coolant Heater; Diesel Engine Exhaust Brake - GMC C series 2002 Owner's Manual

To Use the Engine Coolant Heater

1. Turn off the engine.
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2. Find the plug in receptacle (either behind the front
bumper or in the component box).
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3. Plug a heavy duty, three
(rated for at least 15 amps) into the vehicle's plug
receptacle first. Then plug the extension cord into a
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normal, grounded 110
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
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110 volt AC outlet. Use a heavy
extension cord rated for at least 15 amps.
2-18
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prong extension cord
volt AC outlet.
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prong
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duty three prong
4. Before starting the engine, be sure to unplug
the cord.
How long should you keep the coolant heater plugged
in? The answer depends on the outside temperature.
From 32 _ F to 10 _ F (0 _ C to
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heater plugged in at least two hours. Below
23 _ C), keep the coolant heater plugged in for a
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(
in
minimum of eight hours or overnight. 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 remove and store the cord before starting the
engine. See "Diesel Fuel Requirements and Fuel
System" in the Index for information on what fuel to
use in cold weather.

Diesel Engine Exhaust Brake

The exhaust brake is available on vehicles equipped
with a diesel engine and air brakes (or an air
compressor). It is located in the exhaust system.
The exhaust brake is used to help slow the vehicle
and may assist the vehicle's foundation brakes. The
use of the exhaust brake will assist the braking of the
vehicle and prolong the life of the foundation brake
lining material.
23 _ C), keep the coolant
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10 _ F
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