Running The Vehicle While Parked - Chevrolet 4500 HD 2023 Manual

Warning (Continued)
Entry of carbon monoxide into the cab is
possible with a poorly repaired, damaged,
or corroded exhaust system or cab. Do
not run the engine in confined areas
(such as garages, next to a building or
near another stopped vehicles with
engine running) any more than needed
to move the vehicle.
When the vehicle has to be stopped in an
unconfined area with the engine running
for any more than a few minutes, take
the following steps:
Adjust the heating or cooling system
to force outside air into the cab.
With temperature and outlet selector
knob in any position:
Set the air selector lever to the fresh
air position.
Set the fan speed control knob to the
maximum speed position.
Keep the exhaust tailpipe area clear of
snow and other material to help
reduce the buildup of exhaust gases
under the vehicle.
Warning (Continued)
This is particularly important when
parked in blizzard conditions. You and
others could be seriously injured.
See Climate Control Systems 0 108 and
Maintenance Schedule 0 312.
Breathing diesel engine exhaust exposes
you to chemicals known to the State of
California to cause cancer and birth
defects or other reproductive harm.
Always start and operate the engine
in a well-ventilated area.
If in an enclosed area, vent the
exhaust to the outside.
Do not modify or tamper with the
exhaust system.
Do not idle the engine except as
necessary. For more information go to
www.P65warnings.ca.gov/diesel.
See Battery, Jump Starting, and California
Proposition 65 Warning 0 1.
(Continued)
Warning
Driving and Operating

Running the Vehicle While Parked

Caution
To reduce the chance of personal injury
and/or vehicle damage due to engine
overheating, never leave the engine idling
without an alert driver present. If the
engine should overheat, as indicated by
the engine coolant temperature gauge,
immediate action is required to correct
the condition. Continued operation of the
engine, even for a short time, may result
in a fire. Do not engage the exhaust
brake while the engine is idling as this
may cause engine overheating.
Avoid Unnecessary Idling of the Diesel Engine
If the engine idles too long, the engine
coolant temperature will fall below the
operating range. Low engine operating
temperature causes several conditions that
are harmful to engine operation and life.
Incomplete combustion of fuel in an engine
that is not fully warmed-up causes crankcase
dilution and forms lacquer and gummy
deposits on valves, pistons, and rings. It also
causes rapid accumulation of sludge within
the engine.
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