2020 CHEVROLET LOW CAB FORWARD Owner's Manual

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
48 Storage
Load Cargo Correctly
{Warning
Overloading can result in a crash
because it places too much strain
on the wheel studs with the result
that they break and the wheels
come off.
The weight of the payload must
be limited within the gross vehicle
weight (GVW) rating and(Continued)
Warning (Continued)
distributed over the front and rear
axles so as not to exceed the
axle capacities.
It is extremely dangerous to
overload the vehicle or to load the
vehicle with the cargo positioned
on one side. Load the vehicle
correctly, observing the maximum
loading capacity.
Incorrect loading can make the
cargo unstable. It can also cause
an overload condition confined to
a small area, resulting in damage
to the cargo bed and frame.
Overloading places undue strain
on vehicle parts. It can shorten
the vehicle's service life and
cause a crash. 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
Storage 49
Cargo loading cautionIncorrectCorrect
Do not place cargo only at the front or only at the rear. Distribute it
evenly.
When using supports under cargo, position them uniformly along the
cargo.
To the greatest extent possible, do not allow long cargo to protrude
beyond the rear edge of the cargo bed. Rather, use supports to raise it
at an angle. Avoid supporting it using just the front guard frame and the
rear edge of the cargo bed.

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
52 Instruments and Controls
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . 53
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Windshield Wiper/Washer . . . . . . 54
Power Outlets . . . . . . . . . . . . . . . . . 55
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . 56
Instrument Cluster . . . . . . . . . . . . . 57
Speedometer . . . . . . . . . . . . . . . . . . 58
Odometer . . . . . . . . . . . . . . . . . . . . . . 58
Trip Odometer . . . . . . . . . . . . . . . . . 58
Tachometer . . . . . . . . . . . . . . . . . . . . 59
Fuel Gauge . . . . . . . . . . . . . . . . . . . . 59
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . . . 60
Diesel Exhaust Fluid (DEF) Gauge . . . . . . . . . . . . . . . . . . . . . . . . 60
Seat Belt Reminders . . . . . . . . . . . 60
Battery Warning Light . . . . . . . . . . 61
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . 61
Service Vehicle Soon Light . . . . 62 Brake System Warning Light
(Parking Brake Light) . . . . . . . . . 62
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . 64
Exhaust Brake Light . . . . . . . . . . . 65
Service Transmission Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . 65
Automatic Transmission Fluid Temperature Warning Light . . . 66
Overdrive Off Light . . . . . . . . . . . . . 66
Wait-to-Start Light . . . . . . . . . . . . . 67
Engine Oil Pressure Light . . . . . . 67
Engine Oil Level Indicator Light . . . . . . . . . . . . . . . . . . . . . . . . . 67
Diesel Exhaust Fluid (DEF) Warning Light . . . . . . . . . . . . . . . . 68
Engine Shutdown Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 68
Idle Shutdown Light . . . . . . . . . . . . 68
Reduced Engine Power Light . . . . . . . . . . . . . . . . . . . . . . . . . 69
High-Beam On Light . . . . . . . . . . . 69
Daytime Running Lamps (DRL) Indicator Light . . . . . . . . . . . . . . . . 69
Cruise Control Light . . . . . . . . . . . 70
Information Displays
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . 70
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . 74
Warning Buzzers . . . . . . . . . . . . . . 79

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
Instruments and Controls 53
Controls
Steering Wheel
Adjustment
{Warning
.Adjust the position of the
steering wheel before you
start driving.
. To reduce the risk of
personal injury, apply force
to the steering wheel to
make certain the steering
column is firmly locked
before driving. Also, do not
try to tilt or adjust the
steering wheel while the
vehicle is moving. If these
steps are not followed, the
steering column could move
suddenly while the vehicle
is in motion which could
cause a temporary loss of
steering control which may
result in personal injury or
death.
The steering wheel is adjustable up
and down as well as forward and
backward.
Before adjusting, position the seat
as desired.
1. Lift the lock lever toward you to unlock the steering column.
2. Sit in the correct driving position, and then move the
steering wheel up and down
and forward and backward to
select the optimum steering
wheel position. 3. Firmly lock the steering wheel
at the selected position by
moving the lock lever to the
lock position.
Horn
To sound the horn, press the pad
with a horn symbol on the steering
wheel.

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
54 Instruments and Controls
Windshield Wiper/Washer
To use the windshield wiper and
washer switches, the engine control
switch must be in the ON position.
The windshield wiper switch has the
following positions, which
correspond to the states of the
wiper.
9:Stopped.
3:Intermittent, light rain.
Low Speed : Low speed,
moderate rain.
High Speed : High speed,
heavy rain. If the wiper frequently stops during
operation, contact your nearest
Dealer.
Clear snow and ice from the wiper
blades and windshield before using
them. If frozen to the windshield,
carefully loosen or thaw them.
Damaged blades should be
replaced. See
Wiper Blade
Replacement 0265.
Do not operate the wiper on a dry
windshield surface. Otherwise, the
windshield surface may sustain
damage.
Windshield Washer
{Warning
In freezing weather, do not use
the washer until the windshield is
warmed. Otherwise the washer
fluid can form ice on the
windshield, blocking your vision.
{Warning
Before driving the vehicle, always
clear snow and ice from the hood,
windshield, roof, and rear of the
vehicle, including all lamps and
windows. Reduced visibility from
snow and ice buildup could lead
to a crash.
Windshield washer fluid is sprayed
over the windshield when this switch
is pressed. At the same time, the
windshield wiper operates.

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
Instruments and Controls 55
To spray washer fluid on the
windshield, push the button on the
end of the combination switch lever.
The spray will continue as long as
you hold in the button.
If windshield washer fluid does not
come out in sufficient quantity,
immediately release the switch.
Otherwise, the windshield surface
may sustain damage.
If windshield washer fluid does not
come out, release the windshield
washer switch immediately.
Otherwise the motor may seize up.
Do not hold the switch pressed for
more than 30 seconds. Otherwise,
the washer pump may sustain
damage.
Check the washer fluid level
regularly. Do it often when the
weather is bad.
SeeWasher Fluid 0252 for
information on filling the windshield
washer fluid resevoir.Power Outlets
You can plug in auxiliary electrical
equipment. Just flip the outlet cover
open from the left edge of the cover
and follow the proper installation
instructions that are included with
any electrical equipment you install.
These circuits are protected by a
fuse and have maximum current
loads. When using accessory power
outlets, total maximum electrical
load must not exceed 120W. Always
turn off any electrical equipment
when not in use.
Leaving electrical equipment on for
extended periods will drain your
battery.