2019 CHEVROLET LOW CAB FORWARD check engine

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
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 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
86 Instruments and Controls
Vehicle speed will be severely
limited when the DEF tank is empty.
Be sure to add DEF in advance of
the empty status. SeeDiesel
Exhaust Fluid 0189.Vehicle Messages
The Driver Information Center (DIC)
will display warnings, messages,
and other operation-related
information to alert of system
failures or other necessary checks
that should be performed. Use the
DIC selector to choose the desired
screen page or function.
Engine Overheat Warning
Light
OVERHEAT
This message displays and a
warning light appears when the
engine has overheated and the
engine coolant temperature gauge
needle reaches the red zone. At the
same time a buzzer sounds.
Immediately pull off to a safe place
to take the necessary actions and
check the vehicle. Do not shut down
an overheating engine immediately.
Otherwise, the engine may seize
up. Take appropriate actions for
engine overheating. This light will also activate the
engine alarm and automatic
shutdown system, if equipped.
See
Engine Alarm and Automatic
Shutdown 0173, Engine
Overheating 0259, Engine Coolant
0 253, and Engine Coolant
Temperature Gauge 072.
{Warning
When the engine coolant is still
hot, do not remove the radiator
cap. Hot vapor will come out and
you may be scalded. Add engine
coolant only when the engine
coolant temperature has dropped.
If this light comes on and stays on
while you are driving, your engine
coolant might have overheated
and your engine may be too hot.
You should pull off the road, stop
your vehicle and take appropriate
actions for engine overheating.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Instruments and Controls 87
Low Coolant Warning Light
LOW COOLANT
If this message and light come on,
the system is low on engine coolant
and the engine may overheat.
A warning tone also sounds. If this
light comes on while driving, stop
the vehicle immediately and check
the cooling system for leaks. See
Engine Coolant0253 and have the
vehicle serviced by your dealer. This
light will also activate the engine
alarm and automatic shutdown
system.
See Engine Alarm and Automatic
Shutdown 0173 andEngine
Shutdown Warning Light 080.
Water Separator (Fuel Filter)
Warning Light
WATER SEPARATOR
This message displays and a
warning light appears when the
level in the water separator on the
fuel line is beyond the specified
level. Drain water following the
instructions in the Water in Fuel section and make sure the warning
light goes out. See
Water in Fuel
0 231.
If you continue driving with the
message displayed, the fuel
injection system may fail. See Water
in Fuel 0231.
Air Cleaner Light
CHECK AIR FILTER
This message displays and a
warning light appears when the next
air cleaner element service interval
is near or has already been
reached.
Replace the air cleaner element.
See Engine Air Cleaner/Filter 0253.
Low Fuel Warning Light
LOW FUEL
This message displays and a
warning light appears when the fuel
level in the tank becomes too low
while the engine is running. Add fuel
at the earliest possible time. If the
vehicle runs out of fuel, air bleeding
procedure must be performed. See
Fuel for Diesel Engines 0227,
Fuel Gauge 071, and Running Out
of Fuel 0233.
Regeneration Required
Warning Light
REGEN. REQUIRED
This light (amber) comes on when
Running regeneration or Switch
regeneration is required. When this
light comes on, perform DPF
regeneration soon. If the engine
continues to run without performing
DPF regeneration, this light will
change color from amber to red.
If this light turns red, perform DPF
regeneration immediately. If you do
not perform DPF regeneration, the
check engine malfunction indicator
light and reduced engine power
indicator light will come on,
imposing performance restriction on
the vehicle. If this happens, the
vehicle must be serviced at your
dealer. See Diesel Particulate Filter
0 180.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
88 Instruments and Controls
If your vehicle is equipped with a
power take-off (PTO), monitor the
DIC for DPF related indicators. PTO
and other slow speed applications
may require more attention.
Selectable (Switch)
Regeneration Required
Warning Light
SEL REGEN. REQUIRED
Performing the“Selectable”
regeneration: After the Checking PM
Level Light is shown, this light
comes on in amber when
“Selectable” regeneration is
possible. When the DPF switch is
pressed with this light ON,
"Selectable" regeneration starts.
When the selectable regeneration or
switch regeneration is interrupted:
This light (amber) comes on when
the "Selectable" regeneration or
"Switch" regeneration is interrupted.
When this light comes on, perform
DPF regeneration promptly by
following the procedure for the
"Switch" regeneration. If you
continue to operate the vehicle
without performing DPF regeneration, the color of this light
changes to red from amber. When
this light comes on in red, perform
DPF regeneration immediately by
following the procedure for the
switch regeneration. If you do not
perform DPF regeneration, the
check engine malfunction indicator
light and reduced engine power
indicator light will come on,
imposing performance restriction on
the vehicle. If this situation happens,
the vehicle must be serviced. See
Diesel Particulate Filter
0180.
If your vehicle is equipped with a
power take-off (PTO), monitor the
DIC for DPF related indicators. PTO
and other slow speed applications
may require more attention.
Regeneration in Progress
Light
REGEN. IN PROGRESS
When this light is ON, DPF
regeneration is in progress. When
the vehicle is stationary, the exhaust
sound changes as the engine speed
increases. Also, operating sounds of
the exhaust throttle may be heard. Keep people and flammable objects
away from the exhaust pipe,
because the exhaust temperature
becomes high during regeneration.
When regeneration is completed,
the light goes out automatically. See
Diesel Particulate Filter
0180.
During extended engine idling, this
light may appear on the DIC and the
DPF may be automatically
regenerated.
Checking PM Level Light
CHECKING PM LEVEL
In the case of performing the
"Selectable" regeneration, this light
comes on when the DPF switch is
kept held down. While this light is
ON, the system is checking whether
or not the "Selectable" regeneration
is possible. If the "Selectable"
regeneration is possible, the light
changes to the selectable (switch)
regeneration required warning light.
If the indication does not change to
the selectable (switch) regeneration
required warning light, the
"Selectable" regeneration is not
possible.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Instruments and Controls 89
Exhaust System Warning Light
EXH. SYSTEM
This light comes on when the SCR
system detects a malfunction or
incorrect DEF. SCR system will turn
on other indicator lights and reduce
engine power in progressive stages
to encourage you to have the
malfunction corrected. Continuing to
drive for too long after this light
turns on will eventually result in a
severe vehicle speed limitation.
If this light turns on, promptly have
the vehicle inspected and serviced
at your dealer. SeeDiesel Exhaust
Fluid 0189.
Refill Diesel Exhaust Fluid
(DEF) Warning Light
REFILL DEF
This message displays and a
warning light appears when the DEF
tank is almost empty. Add DEF as
soon as possible.
Engine power will be reduced and
vehicle speed will be limited when
this light is activated. Failure to
promptly refill the DEF tank will result in a severe vehicle speed
limitation. See
Diesel Exhaust Fluid
0 189.
When DIC ERROR is Displayed
ERROR
If the system has not yet been able
to access maintenance data,
ERROR is shown on the DIC.
If ERROR does not change
automatically to a distance or other
maintenance indication, have your
vehicle serviced at your dealer.
Maintenance Data Indicator
Lights
Maintenance data indicator lights
appear on the DIC when each
maintenance item is selected or
when the next change or service
interval of the item is near or has
been reached.
The distance or time shown is the
remaining or excess of them to /
from the change or service timing.
The positive distance or time shows
the remaining of that and the
negative distance or time shows the excess of that. For the items listed
below, the displayed color will
change from green to amber when
remaining distance is below
1 600 km (1,000 mi) and the screen
is selected.
These screens are also displayed
when the engine control switch
turns to the ON position after above
notification timing. The message
remains on the display until the DIC
selector is pressed once or the
vehicle is started.
The maintenance data function
indicates the distance remaining
before the next scheduled
maintenance. Scheduled
maintenance time is approaching
when the display turns from green
to amber. Have the vehicle checked
and serviced at your dealer as soon
as possible.
The vehicle needs to be maintained
more often if it is driven in severe
conditions.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Lighting 95
lever is held up or down. The lever
moves back to neutral as soon as it
is released.
A green light on the instrument
panel is designed to flash to tell you
that the front and rear turn signal
lights are working. If the light stays
on, but does not flash, check for a
burned-out turn signal bulb. If the
green light does not come on when
you move the lever, check the fuse
and indicator bulb.
Either of these indicator lights
flashes when the turn signal switch
is operated with the engine control
switch in the ON position.
Cornering Lamps
The cornering light illuminates the
area to which the vehicle is turning.
With the headlights or marker lights
on, the cornering lights come on in
coordination with the turn signal
lights.
SeeExterior Lamp Controls 092
and Bulb Replacement 0277.
Interior Lighting
Instrument Panel
Illumination Control
The control will change the light
level of the instrument panel.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Infotainment System 105
If Error Appears in the Display
The following messages are
displayed (blink) according to the
status.
.LOAD: This message is
displayed right after inserting a
disc into the main unit or while
reading TOC
. READING: This message is
displayed when reading the file
format of the disc in the MP3/
WMA mode.
. CD CHECK: This message is
displayed when the disc is
stained or upside-down. This
message is displayed when a
disc reading error or a
media-dependent error occurs,
including when a blank disc is
inserted. Check the disc in the
player.
. DECK ERROR: This message is
displayed when the player
cannot operate for some reason.
Eject the disc from the audio
system. .
NO SUPPORT: This message is
displayed when the disc is in
one of the following conditions:
‐Not in
ISO9660 Level 1, 2 format
‐ Not containing MP3/WMA data
(including MP3/WMA
extension files)
‐ Containing only SKIP FILEs
If a disc could not be ejected,
please contact nearest dealer for
service.
Using the Compact Disc
System
Disc
When it is cold or when it is raining,
the car windows will fog up and
cause dew (water drops) to form in
the vehicle compartment
(condensation). When this happens,
the audio may skip, and playback
will stop. Ventilate the vehicle
compartment and dehumidify before
resuming use. The audio may skip due to violent
vibrations when the car is traveling
across harsh roads.
Never insert foreign objects into the
disc insertion slot.
Do not insert a wet disc into the
player.
This player uses an invisible laser
beam which could cause hazardous
radiation exposure if directed
outside the player. Be sure to
operate the player correctly.
Playback may not be possible due
to recording conditions or disc
characteristics, scratches, dirt,
or deterioration.
Usable Discs
Music CDs with the following marks
can be used. CD-R and CD-RW
discs recorded according to the
CD-DA format can also be played.
.
CD-R (CD-Recordable), CD-RW
(CD-ReWritable) may not be
able to play back due to the
recording condition,
characteristics of the disc,
damage, dirt or deterioration due

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Infotainment System 109
with the mp3 file extension. Be sure
to use the .wma file extension when
saving WMA files. The MP letters of
the file extension will be recognized
whether entered as uppercase
letters or lowercase letters.
If the .mp3 or .wma file extension is
attached to a file other than an MP3/
WMA file, that file will be mistakenly
recognized by the deck as an MP3/
WMA file and played, resulting in
loud noise output that can damage
the speakers. Be sure to avoid
attaching the mp3 or .wma file
extension to files that are not MP3/
WMA files.
Multi-Sessions
Does not support multi-session.
When the disc used is a
multi-session disc, only the first
session will be played.
Playing MP3/WMA
When a disc with recorded MP3/
WMA files is inserted, the deck first
checks all the files on the disc. No
sound is emitted while the deck is
checking the files on the disc. It is
recommended that the disc shouldbe recorded without files other than
MP3/WMA files and without
unnecessary folders in order to
speed up the checking of disc files
by the deck.
MP3/WMA Playing Time Display
It is possible that playing time will
not be correct, depending on the
writing condition of the MP3/WMA
file or when VBR Fast Up/Down is
operated.
Display Order of MP3/WMA File/
Folder Names
Names of MP3/WMA folders and
files within the same level are
displayed in the following order.
1. MP3/WMA folders displayed first, by ascending order of
numbers, letters. The files
stored just below the root of the
disc will be stored in the ROOT
FOLDER.
2. Files displayed next, by ascending order of numbers,
letters. It is assumed here that
a disc has already been loaded
into the unit. When a disc is inserted, the CD
player screen will be displayed for
about a few seconds while the unit
checks whether the CD is an audio
CD or whether it contains MP3/
WMA data.
Normally, tracks in ROOT FOLDER
will be played in order from the
first file.
USB Port
USB Operation
Playing Music Files in the USB
Memory (When the USB Memory
is not Connected)
When the USB Memory is
connected to the USB terminal
users can listen to music in the USB
Memory.
1. Connect the USB Memory to the USB terminal.
2. Press MODE/
O/ENTER.
3. Turn MODE/
O/ENTER to
select USB, and then press
ENTER.