radio CHEVROLET LOW CAB FORWARD 2020 User Guide

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
Driving and Operating 227
Conversions and
Add-Ons
Add-On Electrical
Equipment
Installing Electrical Equipment
{Warning
Inappropriate installation or
removal of audio, radio or other
electrical equipment can
adversely affect other electrical
equipment and cause a
breakdown or fire. Be sure to
have electrical equipment
installed or removed by your
dealer. You and others could be
seriously injured.
Do not install any unauthorized
radio set, or any radio set or
antenna that does not comply with
relevant standards. Noise from the
radio set could cause
electromagnetic interference with
the vehicle's electronic equipment and other systems, resulting in a
vehicle breakdown or in a
malfunction of electronic equipment.
Consult your dealer if you wish to
install radio equipment.
Power Take-Off (PTO)
If equipped, the PTO is a device
that is used to provide engine power
to special equipment directly from
the engine or through the
transmission. For details about the
PTO operation, refer to the separate
instruction manual provided by its
maker.
If the optional PTO function is used
for long periods of time, make sure
to regularly check the diesel
particulate filter (DPF) indicator.
Automatic DPF regeneration will not
take place while the PTO function is
active.
1. Engine Speed Control
Switch
2. Main Switch
{Warning
In PTO mode, Cruise Set/Resume
Switch can be used exactly the
same as PTO Engine Speed
Control Switch. Improper
operation of these switches may
cause personal injury or damage.

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
356 Customer Information
Customer
Information
Customer Information
Customer SatisfactionProcedure . . . . . . . . . . . . . . . . . . . 356
Customer Assistance Offices . . . . . . . . . . . . . . . . . . . . . . 357
Customer Assistance for Text Telephone (TTY) Users . . . . . 357
Online Owner Center . . . . . . . . . 357
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . 358
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . 358
Scheduling Service Appointments . . . . . . . . . . . . . . . 359
Collision Damage Repair . . . . . 359
Publication Ordering Information . . . . . . . . . . . . . . . . . . 362
Radio Frequency Statement . . . . . . . . . . . . . . . . . . . 362
Reporting Safety Defects
Reporting Safety Defects tothe United States
Government . . . . . . . . . . . . . . . . . 363
Reporting Safety Defects to General Motors . . . . . . . . . . . . . 363
Vehicle Data Recording and
Privacy
Vehicle Data Recording and
Privacy . . . . . . . . . . . . . . . . . . . . . . 363
Cybersecurity . . . . . . . . . . . . . . . . . 364
Customer Information
Customer Satisfaction
Procedure
Your satisfaction and goodwill are
important to your dealer and to
Chevrolet. Normally, any concerns
with the sales transaction or the
operation of the Chevrolet chassis,
or upfitted rear body will be resolved
by your dealer's sales or service
departments. Sometimes, however,
despite the best intentions of all
concerned, misunderstandings can
occur. If your concern has not been
resolved to your satisfaction, the
following steps should be taken:
STEP ONE : Discuss your concern
with a member of dealership
management. Normally, concerns
can be quickly resolved at that level.
If the matter has already been
reviewed with the sales, service,
or parts manager, contact the owner
of your dealership or the general
manager.

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
362 Customer Information
Publication Ordering
Information
Service Manuals
Service manuals have the diagnosis
and repair information on the
engine, transmission, axle,
suspension, brakes, electrical
system, steering system, body, etc.
Customer Literature
Owner’s manuals are written
specifically for owners and are
intended to provide basic
operational information about the
vehicle. The owner ’s manual
includes the Maintenance Schedule
for all models.
Customer literature publications
available for purchase include
owner ’s manuals, warranty
manuals, infotainment manuals, and
portfolios. Portfolios include an
owner ’s manual, warranty manual,
infotainment manual, if applicable,
and zip lock bag or pouch.
Current and Past Models
Service manuals and customer
literature are available for many
current and past model year GM
vehicles.
To order, call 1-800-551-4123
Monday–Friday, 8:00 a.m.–6:00 p.m.
eastern time
For credit card orders only (VISA,
MasterCard, or Discover), see
Helm, Inc. at: www.helminc.com.
To order by mail, write to:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Make checks payable in U.S. funds.
Radio Frequency
Statement
This vehicle has systems that
operate on a radio frequency that
complies with Part 15 of the Federal
Communications Commission (FCC)
rules. Operation is subject to the following
two conditions:
1. The device may not cause harmful interference.
2. The device must accept any interference received, including
interference that may cause
undesired operation of the
device.
Changes or modifications to any of
these systems by other than an
authorized service facility could void
authorization to use this equipment.

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
Customer Information 363
Reporting Safety
Defects
Reporting Safety Defects
to the United States
Government
If you believe that your vehicle
has a defect which could cause
a crash or could cause injury or
death, you should immediately
inform the National Highway
Traffic Safety Administration
(NHTSA) in addition to notifying
General Motors.
If NHTSA receives similar
complaints, it may open an
investigation, and if it finds that
a safety defect exists in a group
of vehicles, it may order a recall
and remedy campaign.
However, NHTSA cannot
become involved in individual
problems between you, your
dealer, or General Motors.To contact NHTSA, you may call
the Vehicle Safety Hotline
toll-free at 1-888-327-4236 (TTY:
1-800-424-9153); go to
http://
www.safercar.gov; or write to:
Administrator, NHTSA
1200 New Jersey Avenue, S.E.
Washington, D.C. 20590
You can also obtain other
information about motor vehicle
safety from http://
www.safercar.gov
.
Reporting Safety Defects
to General Motors
In addition to notifying NHTSA in a
situation like this, notify General
Motors.
Call 1-800-862-4389, or write:
Chevrolet Motor Division
Chevrolet Customer Assistance
Center
P.O. Box 33170
Detroit, MI 48232-5170
Vehicle Data
Recording and
Privacy
The vehicle has a number of
computers that record information
about the vehicle’s performance and
how it is driven or used. For
example, the vehicle uses computer
modules to monitor and control
engine and transmission
performance, to monitor the
conditions for airbag deployment
and deploy them in a crash, and,
if equipped, to provide antilock
braking to help the driver control the
vehicle. These modules may store
data to help the dealer technician
service the vehicle or to help GM
improve safety or features. Some
modules may also store data about
how the vehicle is operated, such as
rate of fuel consumption or average
speed. These modules may retain
personal preferences, such as radio
presets, seat positions, and
temperature settings.

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
Index 365
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 230
Add-On Electrical Equipment . . . 227
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . 336
Adjustments Seat, Initial Drive . . . . . . . . . . . . . . . 26
Agreements Trademarks and License . . . . . .119
Air Cleaner/Filter, Engine . . . . . . . 243
Air Conditioning . . . . . . . . . . . . . . . . 121
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 125
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 124
AM-FM Radio . . . . . . . . . . . . . . . . . . . . 85
Antenna Fixed Mast . . . . . . . . . . . . . . . . . . . . . 90
Antilock Brake System (ABS) . . . 207
Warning Light . . . . . . . . . . . . . . . . . . . 64
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 307
Interior . . . . . . . . . . . . . . . . . . . . . . . . 313
Assistance Program,
Roadside . . . . . . . . . . . . . . . . . . . . . . 358
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . 108 Audio Players
CD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Automatic Transmission . . . . . . . . . . . . . . . . . 196
Transmission Fluid . . . . . . . . . . . 241
Automatic Transmission Selector Lever . . . . . . . . . . . . . . . . 205
Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 264
Automatic Transmission Fluid Temperature Warning Light . . . . . 66
Automatic Transmission Overdrive Off . . . . . . . . . . . . . . . . . . 206
Auxiliary Devices . . . . . . . . . . . . . . . . . . . . . . . 107
Axle, Rear . . . . . . . . . . . . . . . . . 261, 262
B
Battery - North America . . . . 259, 301
Battery Warning Light . . . . . . . . . . . . 61
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . 219
Blade Replacement, Wiper . . . . . 265
Bluetooth
Overview . . . . . . . . . . . . . . . . . . . . . . 111
Bluetooth Audio . . . . . . . . . . . . . . . . 108
Brake Exhaust . . . . . . . . . . . . . . . . . . . . . . 213
System Warning Light . . . . . . . . . . 62

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
368 Index
Fluid (cont'd)Power Steering . . . . . . . . . . . . . . . 252
Washer . . . . . . . . . . . . . . . . . . . . . . . 252
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . 362
Front Seat Position Seats Adjustment . . . . . . . . . . . . . . . . . . . . . 26
Fuel Biodiesel . . . . . . . . . . . . . . . . . . . . . 219
Cold Weather Operation . . . . . . 221
Diesel Engines . . . . . . . . . . . . . . . 218
Economy, Driving for Better . . . 129
Filling the Tank . . . . . . . . . . . . . . . 225
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Running out of Fuel . . . . . . . . . . . 224
Water in Fuel . . . . . . . . . . . . . . . . . 221
Fuel for Diesel Engines . . . . . . . . . 218
G
Gauges
Diesel Exhaust Fluid (DEF) . . . . . 60
Engine Coolant Temperature . . . 60
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Odometer . . . . . . . . . . . . . . . . . . . . . . . 58
Speedometer . . . . . . . . . . . . . . . . . . . 58
Tachometer . . . . . . . . . . . . . . . . . . . . . 59
Trip Odometer . . . . . . . . . . . . . . . . . . 58 Gauges (cont'd)
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . . . 56
General Information
Vehicle Care . . . . . . . . . . . . . . . . . . 230
Getting In and Out of the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 17
Glove Box . . . . . . . . . . . . . . . . . . . . . . . 43
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . 358
H
Hazard Warning Flashers . . . . . . . . 82
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . 267
Bulb Replacement . . . . . . . 267, 270
Daytime Running Lamps(DRL) Indicator Light . . . . . . . . . . 69
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 81
High-Beam On Light . . . . . . . . . . . . 69
High/Low Beam Changer . . . . . . . 81
Heated Mirrors . . . . . . . . . . . . . . . . . . . 22
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 163
Heating . . . . . . . . . . . . . . . . . . . . . . . . . 121
High Idle System . . . . . . . . . . . . . . . 165
High-Beam On Light . . . . . . . . . . . . . 69
Hill and Mountain Roads . . . . . . . . 141 Hooks
Shopping Bag . . . . . . . . . . . . . . . . . . 45
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
I
Idle Shutdown . . . . . . . . . . . . . . . . . . 164
Idle Shutdown Light . . . . . . . . . . . . . 68
Ignition Positions . . . . . . . . . . . . . . . 157
Information Publication Ordering . . . . . . . . . . 362
Information on Loading the
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 46
Instrument Cluster . . . . . . . . . . . . . . . 57
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . . . 43
Instrument Panel
Overview . . . . . . . . . . . . . . . . . 8, 10, 11
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . 301
K
Keyless EntryRemote (RKE) System . . . . . . . . . 14
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

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
370 Index
P
ParkingBrake . . . . . . . . . . . . . . . . . . . . . . . . . .211
Over Things That Burn . . . . . . . 167
Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Perchlorate Materials Requirements, California . . . . . . 230
Phone
Bluetooth . . . . . . . . . . . . . . . . . . . . . . 111
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Power
Door Locks . . . . . . . . . . . . . . . . . . . . . 21
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . 55
Reduced Engine Light . . . . . . . . . . 69
Steering Fluid . . . . . . . . . . . . . . . . . 252
Windows . . . . . . . . . . . . . . . . . . . . . . . 23
Power Take-Off (PTO) . . . . . . . . . . 227
Pregnancy, Using Seat Belts . . . . 35
Privacy Vehicle Data Recording . . . . . . . 363
Proposition
65 Warning,
California . . . . . . . . . . . .230, 259, 301, Back CoverPublication Ordering
Information . . . . . . . . . . . . . . . . . . . . 362
R
Radio Frequency Statement . . . . 362
Radio Reception . . . . . . . . . . . . . . . . . 89
Radios
AM-FM Radio . . . . . . . . . . . . . . . . . . . 85
Rear Axle . . . . . . . . . . . . . . . . . . 261, 262
Rear Seats . . . . . . . . . . . . . . . . . . . . . . 30
Rear Storage . . . . . . . . . . . . . . . . . . . . 45
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 339
Reduced Engine Power Light . . . . 69
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . 358
Remote Keyless Entry (RKE)
System . . . . . . . . . . . . . . . . . . . . . . . . . 14
Replacement Parts Maintenance . . . . . . . . . . . . . . . . . . 341
Reporting Safety Defects
General Motors . . . . . . . . . . . . . . . 363
U.S. Government . . . . . . . . . . . . . 363
Roads Driving, Wet . . . . . . . . . . . . . . . . . . 140
Roadside Assistance
Program . . . . . . . . . . . . . . . . . . . . . . . 358
Roofmarker Lamps . . . . . . . . . . . . . 274 Rotation, Tires . . . . . . . . . . . . . . . . . . 297
Routing, Engine Drive Belt . . . . . . 355
Running out of Fuel . . . . . . . . . . . . . 224
Running the Vehicle While
Parked . . . . . . . . . . . . . . . . . . . . . . . . 170
S
Safety Defects ReportingGeneral Motors . . . . . . . . . . . . . . . 363
U.S. Government . . . . . . . . . . . . . 363
Safety System Check . . . . . . . . . . . . 37
Scheduling Appointments . . . . . . . 359
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . 31 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Extender . . . . . . . . . . . . . . . . . . . . . . . . 37
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . . 36
Reminders . . . . . . . . . . . . . . . . . . . . . . 60
Three-Point . . . . . . . . . . . . . . . . . . . . . 33
Use During Pregnancy . . . . . . . . . . 35
Seats Position, Front . . . . . . . . . . . . . . . . . . 26
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Security Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 21
Selector Lever . . . . . . . . . . . . . . . . . . 205
Service . . . . . . . . . . . . . . . . . . . . . . . . . 126 Accessories andModifications . . . . . . . . . . . . . . . . 230