lock CHEVROLET LOW CAB FORWARD 2018 Service Manual

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
84 Instruments and Controls
Red means the battery voltage is
too low or too high. If the voltmeter
sign appears in red, have the
vehicle checked and serviced at
your dealer. During or immediately
after the engine is started, a red
abnormal L voltage may display on
the DIC. If the warning disappears
after the engine has started, there is
no problem with the battery voltage.
Calendar and Clock
{Warning
The calendar and clock can be
set only while the vehicle is
stationary. When setting the
calendar or clock, park your
vehicle in a safe place where
stopping or parking is permitted
and that is well clear of traffic.
Press the DIC selector once or
more to select the calendar. Press
and hold the DIC selector to enter
the clock setting screen. The year
segment will flash. Turn the DIC
selector clockwise or
counterclockwise to increase or decrease the year. While in the year
setting screen, press the DIC
selector once to switch to the month
setting screen. The month segment
will flash. Use the same method to
set the month. While in the month
setting screen, press the DIC
selector again to switch to the day
setting mode. Adjust the day using
the selector.
Press and hold the DIC selector to
complete the calendar setting.
When complete, the normal
calendar display will resume. Use
this same method to set the hour
and minute when in the clock setting
screen.
Dimmer
The brightness of the DIC can be
adjusted while the light control
switch is off. Select this screen and
turn the DIC selector clockwise or
counterclockwise to brighten or dim
the illumination. The brightness is
linked to the adjustment of the
instrument panel light level control
while the light control switch is on.
See
Instrument Panel Illumination
Control 095.
Warning Lights and Messages
.
Engine Overheat Warning Light
. Low Coolant Warning Light
. Water Separator Warning Light
. Air Cleaner Light
. Low Fuel Warning Light
. Regeneration Warning Lights
. Exhaust System Warning Light
. Refill DEF Warning Light
. DIC Errors
. Maintenance Data
. Hour Meter
See Vehicle Messages 086.
Maintenance Data Functions
Display/Not Display the
Maintenance Data Function
Maintenance Light: On the DIC, go
to the Maintenance Indicator Light.
Switch the display by pressing and
holding the DIC selector for more
than two seconds. Turn the DIC
selector clockwise or
counterclockwise to switch the

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Instruments and Controls 85
display. Complete the resetting by
pressing and holding the DIC
selector for more than two seconds.
To cancel the setting procedure,
press the DIC selector once. The
display will go back to the previous
screen.
Resetting/Setting the Change
Interval (Odometer Reading)
Engine Oil and Filter Light :On
the DIC, go to the engine oil and
filter light. Enter the resetting screen
by pressing and holding the DIC
selector for more than two seconds.
Complete the resetting by pressing
and holding the DIC selector for
more than two seconds.
Transmission and Differential
Gear Oil Light, Fuel Filter Light,
Power Steering Fluid Light, and
Tire Rotation Light : On the DIC,
go to the particular maintenance
item to reset/adjust. Enter the
setting change screen by pressing
and holding the DIC selector. Set
the change interval by turning the
DIC selector. (Transmission and
Differential Oil, Steering Fluid, and
Tire Rotation Only). Turn clockwise to increase distance and
counterclockwise to decrease
distance. The distance increases
and decreases by 4,000 km
(2,500 mi) increments. Complete the
resetting by pressing and holding
the DIC selector.
Transmission and Differential Gear
Oil and Power Steering Fluid: Initial
value: 48,000 km (30,000 mi).
Adjustable minimum value:
32,000 km (20,000 mi). Adjustable
maximum value: 48,000 km
(30,000 mi).
Tire Rotation: Initial value: OFF.
Adjustable minimum value:
6,000 km (4,000 mi). Adjustable
maximum value: 62,000 km
(39,000 mi).
Starter Indicator Light :
On the
DIC, go to the starter indicator light.
Enter the resetting screen by
pressing and holding the DIC
selector for more than ten seconds.
Complete the resetting by pressing
and holding the DIC selector for
more than ten seconds. If you want to cancel the setting
procedure, press the DIC selector
once. The display will go back to the
previous screen.
Diesel Exhaust Fluid (DEF)
Gauge
With the engine control switch in the
ON position, this gauge indicates
the approximate quantity of DEF
remaining in the DEF tank. F means
the tank is full and E means the
tank is almost empty. When only
one green bar is showing, the DEF
tank is almost empty and should be
refilled soon. If the vehicle is driven
too long with only one bar, the green
will change to amber and additional
warnings and indicators will display.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
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.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
98 Infotainment System
(1) Eject button
(2) FLD/CH button
(3) CD slot
(4) TUNE/TRACK button
(5) Volume control button
(6) USB terminal
(7) Mini jack
(8) FUNC/DISP button
(9) MODE/Power button
Turning the Power On
Press the "MODE/Power" button to
turn the power on. Press and hold it
for 1 second or more to turn the
power off. Volume Adjustment
Press the "Volume control" button to
adjust the volume.
S: Volume will increase 1 step
every time the button is pressed.
Volume will continuously increase
when the button is pressed
continuously.
— : Volume will decrease 1 step
every time the button is pressed.
Volume will continuously decrease
when the button is pressed
continuously.
It can be adjusted between 63
(maximum) and 0. Default setting is 19.
Turning the power on or off with the
volume set to maximum will damage
the equipment and your hearing. Set
the volume to a moderate level.
Function Setting Mode
Adjustment of bass, treble, fader,
and balance, and setting of clock
display and time can be performed.
Adjustment of Bass Level
1. Press the "FUNC" button to display "BAS."
2. Press the "TUNE/TRACK" button ("
y z") while "BAS" is
displayed to adjust the bass
level.
y: Level will increase every
time the button is pressed.
z: Level will decrease every
time the button is pressed.
It can be adjusted in the range
of -5 . -4 . -3 . -2 . -1 . 0 . 1 . 2 .
3 . 4 . 5.
Default setting is 0.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Infotainment System 99
Adjusting Treble1. Press the "FUNC" button to display "TRE."
2. Press the "TUNE/TRACK" button ("
y z") while "TRE" is
displayed to adjust the treble
level.
y: Level will increase every
time the button is pressed.
z: Level will decrease every
time the button is pressed.
It can be adjusted in the range
of -5 . -4 . -3 . -2 . -1 . 0 . 1 . 2 .
3 . 4 . 5.
Default setting is 0.
Adjusting Fader 1. Press the "FUNC" button to display "FAD."
2. Press the "TUNE/TRACK" button ("
y z") while "FAD" is
displayed to adjust the front
and rear speaker volume.
y: Front speaker volume will
increase every time the button
is pressed.
z: Rear speaker volume will
increase every time the button
is pressed.
It can be adjusted in the range
of R7 . R6 . R5 . R4 . R3 . R2 .
R1 . 0 . F1 . F2 . F3 . F4 . F5 .
F6 . F7.
Default setting is 0.
Adjustment of rear speaker volume
is not possible if there are no rear
speakers installed.
Adjusting Balance 1. Press the "FUNC" button to display "BAL."
2. Press the "TUNE/TRACK" button ("
y z") while "BAL" is
displayed to adjust the balance
of volume from the left and
right speakers.
y: Right speaker volume will
increase every time the button
is pressed.
z: Left speaker volume will
increase every time the button
is pressed. It can be adjusted in the range
of L7 . L6 . L5 . L4 . L3 . L2 .
L1 . 0 . R1 . R2 . R3 . R4 . R5 .
R6 . R7.
Default setting is 0.
Switching the Time Display 1. Press the "FUNC" button for less than 1 second to
display "CLK."
2. Press the "TUNE/TRACK" button ("
y z") while “CLK”is
displayed and select
“ON"/"OFF."
"ON": Clock is displayed.
"OFF": Clock is not displayed.
When the clock display is "ON," it is
displayed prioritized over the audio
display (radio frequency, song
number, or elapsed time).
When the power source is
interrupted by battery disconnection,
the time of the clock will be reset.
Setting the Hour 1. Press the "FUNC" button to display "CLK" and make the
clock display (hours) blink.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
100 Infotainment System
2. Press the "TUNE/TRACK"button ("
y z") while the
clock display (hours) is blinking
to adjust the time (hours).
y: Time (hours) will increase
every time the button is
pressed.
z: Time (hours) will decrease
every time the button is
pressed.
Setting the Minutes 1. Press the "FUNC" button to display "CLK" and make the
clock display (minutes) blink.
2. Press the "TUNE/TRACK" button ("
y z") while the
clock display (minutes) is
blinking to adjust the time
(minutes).
y: Time (minutes) will
increase every time the button
is pressed.
z: Time (minutes) will
decrease every time the button
is pressed.
Tuner Mode Operations
Tuning
1. Press the "MODE" button when the power is on to select either
AM radio or FM radio.
It is switched to AM radio when
"AM" is displayed, and FM
radio when "FM" is displayed.
2. Press the "TUNE" button ("
y z") for less than
2 seconds to select a radio
station manually. The display
should be checked in order to
adjust the frequency because
AM radio frequency will range
from 10 kHz or FM radio
frequency will range from
0.2 MHz.
Press the "TUNE" button
("
y z") for 2 seconds or
longer to select a radio station
automatically. The automatic
tuning will stop after detecting
a receivable station. Press the
"TUNE" button ("
y z") again
to cancel this function. When the displayed frequency
reaches the highest frequency, it will
return to the lowest frequency.
When the lowest frequency has
been reached, it will return to the
highest frequency.
Program your preferred radio
stations to the preset channels in
advance to conveniently use while
driving.
Reception frequency :
AM 530 - 1710 kHz (10 kHz step)
FM 87.7 - 107.9 MHz (0.2
MHz step)
Calling Out Preset Channels
A maximum of 6 stations can be
programmed and called out in the
"Preset" channels for each of the
FM radio and AM radio.
1. Press the "CH" button for less than 2 seconds.
2. Press the "TUNE" button ("
y z") and select the station
programmed in the preset
channels.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Infotainment System 101
As an example, "CH1" is
displayed.
The radio stations in memory are
erased when the power supply is
interrupted to replace the battery or
fuses.
Programming Preset Channels 1. Display the channel number you wish to program.
2. Press the "CH" button for 2 seconds or longer.
The frequency display will
blink.
3. Press the "TUNE" button ("
y z") to select the
frequency you wish to program.
4. Press the "CH" button for 2 seconds or longer.
Once it has been set as a
preset channel, the frequency
display will stop blinking.
Radio Reception
Usually, a problem with radio
reception does not mean there is a
problem with your radio - it is just the normal result of conditions
outside the vehicle. For example,
nearby buildings and terrain can
interfere with FM reception. Power
lines or telephone wires can
interfere with AM signals.
And of course, radio signals have a
limited range. The farther you are
from a station, the weaker its signal
will be. In addition, reception
conditions change constantly as
your vehicle moves.
Here are some common reception
problems that probably do not
indicate a problem with your radio.
FM Transmissions
Fading and drifting stations -
Generally, the effective range of FM
is about 40 km (25 miles). Once
outside this range, you may notice
fading and drifting, which increase
with the distance from the radio
transmitter. They are often
accompanied by distortion.
Multi-path - FM signals are
reflective, making it possible for two
signals to reach your antenna at the
same time. If this happens, the
signals will cancel each other out,
causing a momentary flutter or loss
of reception.
Static and fluttering - These occur
when signals are blocked by
buildings, trees, or other large
objects. Increasing the bass level
may reduce static and fluttering.
Station swapping - If the FM signal
you are listening to is interrupted or
weakened, and there is another
strong station nearby on the FM
band, your radio may tune in the
second station until the original
signal can be picked up again.
AM Transmissions
Fading - AM broadcasts are
reflected by the upper atmosphere -
especially at night. These reflected
signals can interfere with those
received directly from the radio
station, causing the radio station to
sound alternately strong and weak.
Station interference - When a
reflected signal and a signal
received directly from a radio station
are very nearly the same frequency,

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
110 Infotainment System
USB Port
USB Memory Operations
Playing Music Downloaded in USB
Flash Memory
Insert the USB device that stores
music data into the USB terminal.
After the music data is recognized,
the playback will start.
Connect the USB device in a way
that will not impede your driving.
The improper way of connecting the
device may disturb your driving and
cause a traffic accident.
Do not connect, disconnect,
or operate the USB device while
driving. Stop the vehicle in a safe
location and perform these
operations.When removing the USB flash
memory, turn off ("LOCK") the
engine control switch or select the
other mode (e.g. FM or AM mode).
Selecting the USB Mode
Pressing the "MODE" button and
displaying "USB" when the USB
device is connected allows you to
switch from another audio mode to
the USB mode.
When playback of the music file is
started, the file number in the folder
being played back is shown on the
display.
When switching to another mode
from the USB mode, then returning
to the USB mode, it allows you to
return to the music file that was
played last.
Fast Forwarding/Fast Reversing
Press and hold the "TRACK" button
("
y z") during playback to
advance the file forward or
backward quickly. Fast forward or
fast reverse is stopped and the file
is played back when the "TRACK"
button ("
y z") is released.
y: Fast forward.
z: Fast reverse.
Replaying the Same File
Press the "TRACK" button ("
z") for
less than 1 second to start playback
of the current file from the
beginning.
File Selection
Press the "TRACK" button ("
y z")
for less than 1 second to select the
desired file number.
y: Advance to the next file.
z(press twice or more): Return to
a previous file.
Selecting a Track Inside a Folder
1. Press the "FLD" button for less than 1 second. Folder number
is displayed. As an example,
"F100" for folder number 100.
2. Press the "TRACK" button ("
y z") to select the folder
number.
y: Increase folder number.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
116 Climate Controls
O:Use this position to prevent
dusty or otherwise contaminated
outside air from entering the cab,
such as in a tunnel or in congested
traffic.
Extended use of the inside air
recirculation position causes the
windshield and windows to fog up
easily, making visibility poor. For
good ventilation, switch to outside
air as soon as possible.
Temperature Control Knob : Use
this knob to select the preferred cab
interior temperature. Turn the knob
counterclockwise to lower the outlet
air temperature and clockwise to
raise it.
Fan Speed Control Knob : The fan
speed can be adjusted to any of the
four speeds available.
Air Conditioning (A/C) Switch :
Press this switch to use the air
conditioning system. The indicator
light inside the switch will come on
to show that the air conditioning
system is in operation. The air
conditioning system can also be
used for dehumidifying while the heater is being used. To turn off the
air conditioning, push this switch in
again.
When the defrost mode is selected,
the air conditioner compressor will
be on.
Even if the A/C switch is turned on,
the air conditioning system will not
operate when the fan speed control
knob is placed in the stop position.
Make sure that the fan speed
control knob is in a position other
than the stop position.
Even in seasons when the air
conditioning system is not used,
occasionally operate the system for
a few minutes with the engine
running at a low speed in order to
keep the system's components
lubricated.
Ventilation
Outside Air Ventilation :
Press the
A/C switch to the off position. Turn
the outlet selector knob to the
preferred position. Move the air
selector lever to the
Pposition. Set the temperature control knob to
the desired position. Adjust the fan
speed control knob to the preferred
speed.
How to Use the Heater
Normal Heating :
Set the outlet
selector knob to the
6or-
position. Use the-position for
warming your feet while defogging
the windshield.
Set the air selector lever to the
P
position. Adjust the temperature
control knob and the fan speed
control knob to the desired
positions.
To dehumidify the cab interior while
heating, press the A/C switch to the
on position.
As the heater uses the heat from
the engine coolant, its heating effect
is weak when the engine coolant
temperature is low.
Maximum Heating : Turn the outlet
selector knob to the
6position, set
the air selector lever to the
O

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
120 Climate Controls
The vehicle must not be used with
the filter removed or incorrectly
installed. Failure to observe this
precaution can lead to air
conditioning system damage as a
result of dust, dirt and the like
entering the system.
Removing the Outside Air Filter
1. Remove the filter from underthe instrument panel on the
passenger side. While pressing
in the filter lock, on both sides,
pull out the filter.
2. Use a vacuum cleaner or the like to clean dust and dirt from
its surface. In order to avoid filter damage, hard
brushes should not be used for filter
cleaning.
Installing the Outside Air Filter
Install the filter in the reverse order
to removal.
Ensure that the filter is returned
securely to its original position.
Failure to observe this precaution
can lead to rattling during travel.
The vehicle must not be used with
the filter removed or incorrectly
installed. Failure to observe this
precaution can lead to air
conditioning system damage as a
result of dust, dirt, water, snow, and
the like entering the system.
Service
The air conditioning system will not
be able to cool the cab interior
effectively if the refrigerant level is
low. Accordingly, the refrigerant
level must be topped up whenever
necessary.
Please contact your dealer
whenever refrigerant must be
added. Operation Tips
Operating the air conditioning while
the refrigerant level is too low leads
not only to poor cooling
performance but also to air
conditioning system damage.
This vehicle uses the new
refrigerant HFC134a (R134a) in the
air conditioning system. No other
type of refrigerant can be used. In
order to protect the environment,
care must be taken to ensure that
refrigerant gas is never released
into open air. When refrigerant must
be replaced, therefore, please
contact your dealer or other service
facility equipped with a gas recovery
installation system.