2020 CHEVROLET LOW CAB FORWARD ECU

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500 HD/XD/5500 HD/XD
Owner Manual (GMNA-Localizing-U.S.-13337621) - 2020 - crc - 12/5/18
Keys, Doors, and Windows 13
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . 14
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . . 14
Getting In and Out of the Vehicle . . . . . . . . . . . . . . . . . . . . . . . 17
Door Locks . . . . . . . . . . . . . . . . . . . . 18
Power Door Locks . . . . . . . . . . . . . 21
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . 21
Exterior Mirrors
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 21
Heated Mirrors . . . . . . . . . . . . . . . . . 22
Windows
Power Windows . . . . . . . . . . . . . . . 23
Sun Visors . . . . . . . . . . . . . . . . . . . . . 25
Keys and Locks
Keys
1. Main Key
2. Spare Key
3. Metal plate with key code
One key (1) can operate all the
locks on the vehicle. Keep one of
the two keys provided as a
spare (2). Record the key code
numbers. Both sides of the key are identical,
so you can insert the key in the
engine control switch without
worrying about which way you
insert it.
The key code is indicated on a
separate metal plate (3) in order to
prevent it from being acquired by an
unauthorized person.
Where is the Key Used?
Where For What
Engine Control
Switch Starting and
shutting down
the engine
Front doors Locking and unlocking the
doors.
Wipe off the key to remove any dirt
or dust, etc. before using it.
To prevent theft, store the metal
plate with key code in a safe place
other than the vehicle.
Should you lose the key, please
give the key number to the nearest
dealer. The dealer will be able to
duplicate your key.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500 HD/XD/5500 HD/XD
Owner Manual (GMNA-Localizing-U.S.-13337621) - 2020 - crc - 12/5/18
Keys, Doors, and Windows 21
Power Door Locks
Power Door Lock (Central
Door Lock)
How the Power Door Lock System
Operates
When you lock the driver's door
using the key or by operating the
lock button, the power door lock
system will automatically lock all
doors simultaneously.
Door Lock Switch
Both doors can be locked and
unlocked by pressing the power
door lock switch.
Vehicle Security
Guard Against Theft
Your new vehicle has many features
to help prevent theft of the vehicle,
its equipment and contents. But
these anti-theft features depend
upon you to work.
The time to be most on guard is
when leaving the vehicle:
.Park in a lighted spot when
you can.
. Turn the engine control switch to
"LOCK" and remove the key.
This locks the switch and the
steering controls. The selector
lever is not locked.
. Keep items that may appear to
be of value out of sight and
locked up when possible.
. Fully close all windows and lock
all doors.
Exterior Mirrors
Mirrors
Sit in the correct driving position
with the seat adjusted properly.
Then, check each mirror to ensure
that a proper view of the rear and
sides of the vehicle are provided.
Make adjustments and clean mirrors
if necessary.
Outside Rearview Mirrors
After properly adjusting your seat for
proper driving position, adjust the
mirrors so that they provide
adequate views for checking the
rear and the sides of the vehicle.
Adjust the outside rearview mirrors
by hand before vehicle operation.
This helps you determine the
location of objects seen in the
mirror. If the outside mirror fogs up,
warm up the outside rearview
mirror's face to defog.
See Heated Mirrors 022.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500 HD/XD/5500 HD/XD
Owner Manual (GMNA-Localizing-U.S.-13337621) - 2020 - crc - 12/5/18
40 Seats and Restraints
Warning (Continued)
Any unrestrained child could be
injured by striking the vehicle's
interior or by ejection from the
vehicle during an accident or
driving maneuver. Never allow a
child to be held by another
occupant instead of being
properly restrained. If not properly
restrained, the child could strike
the vehicle interior or be crushed
by the person holding the child,
or by other occupants.
Be sure to follow all installation and
use instructions that come with any
child restraint system.
Child restraint systems are designed
to be secured in vehicle seats either
by the lap belt, or the lap portion of
the lap-shoulder belt at that seating
position. The child must also be
secured within the restraint by the
means provided by the child
restraint manufacturer. If the child or the child restraint is not properly
secured, the child risks personal
injury in the event of a collision.
Using a Lap Belt That Has No
Retractor
When securing a child restraint with
the center seat lap belt, pull the
excess webbing through the belt's
adjustment feature, then take these
steps:
.
Once installed, push and pull the
child restraint in all directions to
be sure it is secure. If it comes
loose, flip the end of the belt
with the adjustment feature over
before rebuckling.
. If the child restraint is still not
secure, use the outboard seating
position in the vehicle and
contact your dealer and the child
restraint manufacturer for help.
. Secure the child in the restraint
in accordance with the child
restraint manufacturer's
instructions.
Installation on Outboard Seat
A seat belt locking clip is required
for installation of a child restraint
system on the outboard seat of this
vehicle. A locking clip may usually
be obtained where child restraints
are sold, or by contacting your
dealer for assistance. Make sure the
locking clip is identical to the one
shown on this page. Until you have
the clip, use the child restraint
system only in the center seat.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500 HD/XD/5500 HD/XD
Owner Manual (GMNA-Localizing-U.S.-13337621) - 2020 - crc - 12/5/18
Seats and Restraints 41
{Warning
To help avoid personal injury or
death during a collision or sudden
maneuver, always thread both the
lap and shoulder belt through the
locking clip when securing a child
restraint on the outboard seat.
If the clip is not used or installed
properly, the child restraint may
move or tip over when your
vehicle turns or stops abruptly.
Secure the child restraint with the
lap belt portion (1) of the seat belt in
accordance with the restraint
manufacturer's instructions. Then
thread both the lap (1) and shoulder
belt (2) portions through the locking
clip. Push and pull the child restraint
in all directions to be sure it is
secure.
Locking Clip Attached to Seat Belt–Side View
1. Lap Belt
2. Shoulder Belt
3. Locking Clip
When your child restraint is not
installed, remove the locking clip to
permit normal use of the
lap-shoulder belt. Keep the locking
clip in the glove box to help prevent
its loss.
Child Restraint with Top Tether
{Warning
We do not recommend using a
child restraint that requires the
use of a top tether. There is no
appropriate place to attach a top
tether anchor behind the seat in
this vehicle.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500 HD/XD/5500 HD/XD
Owner Manual (GMNA-Localizing-U.S.-13337621) - 2020 - crc - 12/5/18
50 Storage
Cargo loading cautionIncorrectCorrect
Use ropes and tarpaulins to secure the cargo so it does not fall off the
cargo bed. Use rubber bands or bungee cords to prevent the tarpaulins
from flapping in the wind.
Avoid loading cargo too high. It can cause the vehicle to tip sideways
when it catches side winds and when turning the vehicle.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500 HD/XD/5500 HD/XD
Owner Manual (GMNA-Localizing-U.S.-13337621) - 2020 - crc - 12/5/18
Storage 51
Loading Equipment
Do not load equipment from the rear
of the cargo bed. The frame may
become deformed when equipment
is loaded from the rear of the cargo
bed. In addition, the frame may
become deformed even when
loading equipment that has a weight
under the maximum loading
capacity.When loading equipment, a device
for securing the cargo bed is
required. Use a car carrier or attach
a rear support stand. If you have
any questions, contact your dealer.
Make Sure There is No Flammable
Material between the Cab and
Cargo Bed
Caution
Be careful not to allow a sheet,
canvas top, or the ends of ropes
or rubber straps to touch or come
close to the engine or exhaust
pipe. During vehicle operation,
the engine’s heat could set them
on fire. Carefully secure the
sheet, canvas top, or the ends of
ropes or rubber straps.
Do not Carry Fuel and Spray Cans
in the Cab
{Danger
It is extremely dangerous to carry
fuel and spray cans in the cab.
If such a container were to ignite
or rupture, it could cause a fire or
explosion. You and others could
be seriously injured.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500 HD/XD/5500 HD/XD
Owner Manual (GMNA-Localizing-U.S.-13337621) - 2020 - crc - 12/5/18
102 Infotainment System
{Warning
.Either place the iPod and
iPod connection cable
somewhere where they do
not interfere with driving or
temporarily secure them at
a location where they are
not in the way. They could
impede driving and cause a
crash.
. Make sure not to touch the
terminals of the iPod
connection cable.
. Do not connect, adjust or
remove the iPod while
driving.
Pausing the Music
Press 3 to pause the music. To
resume, press 4.
File Selection
Press
yorzto select the music
file of your choice.
. Press
yto advance to the
next file. .
Press
zto return to the
previous file. Press again to
return to the previous file.
Fast Forwarding/Fast Reversing
Press and hold
yorzto fast
forward or fast reverse the
music file.
. Press
yto fast forward.
. Press
zto fast reverse.
Release to stop.
Repeat Playback
Press 1 to repeat the same file
being played.
wis displayed.
To cancel, press twice.
w
disappears.
When the iPod is removed from the
main unit under the Repeat setting,
the iPod switches to the repeat
playback mode. Random Playback (SHUFFLE)
Press 2.
The mode changes as follows each
time you press 2:
OFF
→Album Shuffle →Track
Shuffle →OFF
. Album Shuffle:
vis displayed
and the albums will be played
back in shuffle mode (tracks
within an album will not be
shuffled).
. Track Shuffle: FLD
vis
displayed and the selected list
will be played back in
shuffle mode.
When the iPod is removed from the
main unit under the Shuffle setting,
the iPod switches to the shuffle
playback mode.
Selecting the Music File from the
Category List
You can search for a music file you
want to listen to from categories
such as artists or genres.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500 HD/XD/5500 HD/XD
Owner Manual (GMNA-Localizing-U.S.-13337621) - 2020 - crc - 12/5/18
108 Infotainment System
Warning (Continued)
they do not interfere with
driving or temporarily secure
them at a location where
they are not in the way.
They could impede driving
and cause a crash.
. Make sure not to touch the
terminals of the mini plug
cable.
. Do not connect, adjust or
remove the portable audio
device while driving.
The volume set by adjustment in the
AUX mode is effective in the AUX
mode only.
To power the portable audio device,
use the battery or other power
source supplied with the device.
The AUX device cannot be
controlled from the main unit.
Reduce the AUX volume to prevent
speaker damage.
Bluetooth Audio
Bluetooth Audio Operation
Connecting a Bluetooth compatible
audio player or mobile phone to this
unit allows you to operate it from the
system and listen to music.
In addition, as the connection
between the unit and the portable
device is wireless, users will not
face problems associated with cable
connections.
This unit supports Bluetooth.
Bluetooth is a wireless data system
which allows users to listen to music
without the need to connect the
portable device with wires.
If the portable device is not
Bluetooth-compatible, this function
is not available.
Do not connect the portable device
while driving.
Do not leave the portable device
inside the vehicle. (The interior of
the vehicle may become too hot
under extreme hot weather.) Do not set the portable device too
close to this unit. When the device
and the unit are too close to each
other, sound quality may deteriorate
and connection problems may arise.
Playing Music
1. Press MODE/
O/ENTER.
2. Turn MODE/
O/ENTER to
select BT-AUDIO, and then
press ENTER.
The music on the Bluetooth
compatible device that is
connected will start.
When the registered device is
not connected, NO CONNECT
is displayed.
First connect the portable device to
the unit before performing the
following operation. See
“Registering a Bluetooth Device” in
Bluetooth 0111.
Bluetooth audio operation is subject
to portable device compatibility.
Operation of the portable device via
this unit differs depending on the
specifications of the portable device.