Chevrolet/GMC 2013 DURAMAX Diesel, Owner'S Manual

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Black plate (3,1)
Chevrolet/GMC DURAMAX Diesel - 2013 - CRC - 5/29/12
Driving and Operating 9-3
Be sure you have the right oil for the
engine, and that you have changed
the oil at the proper times. If you
use the wrong oil, the engine may
be harder to start.
Be sure you are using the proper
fuel for existing weather conditions.
See
Fuel for Diesel Engines on
page 9 ‑ 19 .
If the engine starts, runs a short
time, then stops, the vehicle needs
service.
{
WARNING
Do not use gasoline or starting
aids, such as ether, in the air
intake. They could damage the
engine, which may not be
covered by the warranty. There
could also be a fire, which could
cause serious personal injury.
Engine Idle Variations
Under certain conditions the engine
idle speed can vary or be elevated.
Change in idle speed is normal and
does not indicate a problem. Normal
conditions that can raise idle speed
are low voltage, DPF regeneration,
air conditioning compressor loads,
and engine warmup. These speeds
can range from approximately 600
to 1,000 rpm.
Elevated Idle
The engine has a cold temperature
high idle feature which elevates the
engine idle speed from base idle to
1050 rpm for pickup models or
1200 rpm for van models when
outside temperatures are below 0°C
(32°F), and the engine coolant
temperature is below 65°C (150°F).
This feature enhances heater
performance by raising the engine
coolant temperature faster.
This feature can be turned on or off
using the DIC buttons. If the vehicle
is not equipped with DIC buttons, do
the following to turn this feature on
or off:
1. Turn the ignition to ON/RUN,
with the vehicle off.
2. Press the accelerator pedal to
the floor and hold while quickly
pressing the brake pedal three
times in less than eight seconds.
3. Release the accelerator pedal
and start the engine.
When the engine is started, it will
slowly ramp up to the high idle
speed after a delay of a few
seconds up to approximately
two minutes. For this method to
work properly there must be no
throttle or brake pedal faults.
The engine idle speed will return to
normal once the following conditions
are met:
. Engine coolant temperature
reaches 65°C (150°F).