Operating Temperature - Chevrolet Low Cab Forward 4500 2019 Series Owner's Manual

158 Driving and Operating
Stopping the Engine
When stopping the gasoline engine,
take the following steps:
1. Bring the vehicle to a
complete stop.
2. Firmly apply the parking brake.
3. Move the selector lever to the
P position and make sure that
the shift indicator shows P.
4. Allow the engine to idle for
approximately 3 minutes.
5. Turn the engine control switch
to the ACC or LOCK position.
To prevent the battery from going
dead, turn the engine control switch
to the ACC or LOCK position after
stopping the engine. If you leave the
vehicle for an extended period of
time, place the engine control switch
in the LOCK position.
If the Vehicle Has Not Been Used
for a Long Period
If the vehicle is to be placed in
storage for a prolonged period of
time, certain precautions must be
taken to prevent deterioration. See
your authorized dealer for more
detailed information.
Before using a vehicle that has
not been driven for a long
period, check the engine and
transmission for oil leakage, and
make sure the oil is at the
required levels. If there is
insufficient oil, it will not
adequately reach and lubricate
components, and a breakdown
will result.
Start the engine and allow it to
idle for at least 5 minutes. Check
for abnormal noises.
For instructions on warming up
the engine, refer to Starting the
Engine previously in this
section.

Operating Temperature

Recommendations for Warming
Up the Engine
The engine is sufficiently warmed
up when the needle of the engine
coolant temperature gauge starts
to move.
Do not race the engine or quickly
accelerate before the engine has
sufficiently warmed up. Oil would
not have adequately reached and
lubricated components, and a
breakdown may result.
The exhaust pipe becomes
extremely hot while the engine is
idling. Before warming up the
engine, make sure there is no
flammable material, such as grass,
waste paper, oil, or old tires near the
exhaust pipe.
Engine Warm-up System
During cold ambient conditions, the
automatic engine warm-up system
operates to reduce engine warm-up
time during idling.
Automatic Engine Warm-up :
When the engine is idling with the
engine coolant temperature below
62 °C (144 °F), the engine warm-up
increases engine idle speed so that
the engine is warmed more quickly.
Warm-up is cancelled when the
accelerator pedal is pressed, and
resumed when the pedal is
released. Warm-up is automatically