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Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
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In Brief 19
3. Firmly lock the steering wheelat the selected position by
moving the lock lever to the
lock position.
Interior Lighting
Front Light
The dome light operates regardless
of the engine control switch position.
The switch has three positions.
ON : The light stays on regardless
of the doors being open or closed.
OFF : The light stays off regardless
of the doors being open or closed. Between ON and OFF, the light
comes on when the driver's door is
opened.
Rear Light (Crew Cab Model Only)
The dome light operates regardless
of the engine control switch position.
The switch has three positions.
ON :
The light stays on regardless
of the doors being open or closed.
OFF : The light stays off regardless
of the doors being open or closed.
Between ON and OFF, the light
comes on when the driver's door is
opened.
Exterior Lighting
Turning the light control switch to
the following positions will cause the
relevant lights to illuminate.
The light control switch can be used
when the engine control switch is
placed in the LOCK or ACC
position. Do not operate the
combination lights for an extended
time period with the engine stopped.
Otherwise, the battery may go dead,
making it impossible to restart the
engine.
9: Turns off all exterior lights.
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Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
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92 Lighting
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . 92
Headlamp High/Low-BeamChanger . . . . . . . . . . . . . . . . . . . . . . 93
Flash-to-Pass . . . . . . . . . . . . . . . . . . 93
Hazard Warning Flashers . . . . . . 94
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . 94
Cornering Lamps . . . . . . . . . . . . . . 95
Interior Lighting
Instrument Panel Illumination Control . . . . . . . . . . . . . . . . . . . . . . . 95
Cargo Lamp . . . . . . . . . . . . . . . . . . . 96
Dome Lamps . . . . . . . . . . . . . . . . . . 96
Exterior Lighting
Exterior Lamp Controls
Turning the light control switch to
the following positions will cause the
relevant lights to illuminate.
The light control switch can be used
when the engine control switch is
placed in the LOCK or ACC
position. Do not operate the
combination lights for an extended
time period with the engine stopped.
Otherwise, the battery may go dead,
making it impossible to restart the
engine.
9: Turns off all exterior lights.
;:Turns on the parking lights
including all exterior lights, except
the headlights.
2: Turns on the headlights
together with the parking lights,
sidemarker lights, roofmarker lights,
taillights, license plate light, and
instrument panel lights.
When you start the engine in
daytime, with the lighting switch off,
and release the parking brake, the
daytime running lights will come on.
See Daytime Running Lamps (DRL)
Indicator Light 082 and Turn and
Lane-Change Signals 094.
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Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
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94 Lighting
Hazard Warning Flashers
Use the hazard warning light flasher
to warn other drivers any time your
vehicle becomes a traffic hazard,
day or night. With the engine control
switch in any position or the key
removed, when this switch is
pressed, all of the turn signal lights
and the turn signal indicator lights
flash to signal an emergency. To
turn off the hazard lights, press the
switch again.Do not leave the hazard warning
light flasher operating for an
extended time period with the
engine stopped. Otherwise, the
battery may go dead, making it
impossible to restart the engine.
Both indicator lights flash when the
hazard warning flasher switch is
operated irrespective of the position
of the engine control switch.
The individual turn signals do not
work when the hazard flasher is
turned on.
Turn and Lane-Change
Signals
When turning left or right, move the
lever up or down to flash the turn
signal light.
When the turn is completed, the
signal will cancel and the lever will
return to horizontal.
If the steering wheel is only turned a
small amount, turn off the signal
manually. Lightly press and hold the
lever up or down when overtaking or
changing lanes. The turn signal light
continues flashing as long as the
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Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
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Driving and Operating 153
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.
Let the engine idle for 3 minutes
before shutting off the engine. This
allows the turbocharger to slow
down while keeping the bearings
lubricated.
If the Vehicle Has Not Been Used
for a Long Period
If a diesel vehicle has been
standing for an extended period of
time, the turbocharger bearings
should be pre-lubricated prior to
starting. 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 five minutes. Check for
abnormal noises.
For instructions on warming up the
engine, refer to
“Starting the Engine”
previously in this section.
If one year has passed since the
diesel exhaust fluid (DEF) in the
DEF tank was added, the DEF in
the tank should be replaced. Be
careful not to inhale the ammonia
odor when replacing the DEF. Also,
please contact your nearest dealer
about the replacement work.
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
system automatically closes the
exhaust brake and 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 cancelled
entirely after the engine coolant
temperature rises above 65 °C
(149 °F).