Page 5 of 374
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
4 Introduction
No. Description1 Cab tilt instruction
2 Automatic transmission fluid
level
3 VIN, weight rating, and
Greenhouse Gas (GHG)
emissions
4 NO STEP instruction
5 Certified clean idle label
6 Towing
7 Vehicle noise emission
control information
8 ID plate
9 Engine cooling
10 Fan blade Crew cab model
Page 6 of 374
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
Introduction 5
No. Description1 Vehicle noise emission
control information
2 VIN, weight rating, and
Greenhouse Gas (GHG)
emissions
3 NO STEP instruction
4 Engine oil level
5 Engine oil level notice
6 Certified clean idle label
7 Towing
8 Engine cooling
9 Fan blade
10 Automatic transmission fluid
level
11 ID plate
12 Power steering fluid
13 Power steering fluid
14 Engine coolant level
15 Starting aids All models
Page 30 of 374

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 29
{Warning
Do not adjust the reclining
seatback on the driver's seat
while the vehicle is moving. The
seatback could jerk and cause a
loss of control. You and others
could be seriously injured.
To recline the seatback, raise the
seatback tilt lever and gently lean
back to the desired position.To move the seatback forward, lean
forward with your back slightly clear
of the seatback and raise the lever.
After making adjustments, check
that the seatback is fully locked.
Suspension Adjustment
Avoid making any kind of contact
with the pointer on the scale. Doing
so may result in damage to the
pointer, preventing appropriate
weight adjustments from being
possible.
Before sitting on the seat, use the
knob to adjust the suspension to
suit your weight. Turn the knob
clockwise to move the pointer downthe scale and counterclockwise to
move it up the scale. The pointer
should be alongside your weight on
the scale.
The range of adjustment is
50-130 kg (110-290 lbs). If your
weight is outside this range, the
suspension may not be fully
effective. However, you will be able
to sit in the correct position for
driving.
Passenger
’s Seat/Center Seat
{Warning
Baggage must not be placed on
the center seat. If the baggage
falls on the floor when braking, it
may prevent the driver from
operating the pedals. You and
others could be seriously injured.
Page 45 of 374

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
44 Storage
{Warning
For safety, close the glove box
during driving. There is a risk of
injury from the open lid or items
stored in the glove box.
You and others could be seriously
injured.
The glove box lid will automatically
spring open when it is unlocked. Do
not put your face or head near
the lid.
{Warning
Do not leave eyeglasses or a
lighter in the vehicle. Lighters
may explode and plastic lenses or
frames may deform or crack if the
interior temperature becomes
very hot.
You and others could be seriously
injured.
Caution
When closing the glove box lid,
do not allow stored items to pass
the line shown in the illustration.
The glove box lid may break if it
is closed when items inside have
passed the line and are sticking
out from the box.
Do not place items such as vehicle
registration documents or owner
manuals in the glove box, but store
them in the seat back pocket
located on the back side of the
driver seat.
Refer to Storage Compartments
0 42.
Cupholders
Pull the cupholder towards you to
open it.
Do not place a cup that is too full in
the cupholder. Spillages could
cause damage to the radio and
other electrical circuits. If there is a
spill, wipe it up immediately with a
dry cloth.
Do not tilt the cab with a filled cup in
the cupholder. There may be a
danger of the cupholder breaking if
the weight on each holder exceeds
Page 47 of 374

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
46 Storage
Information on
Loading the Vehicle
Overloading
{Warning
Overloading can result in loss of
vehicle control and personal
injury or death, either by causing
component failures or by affecting
vehicle handling. It can also
shorten the service life of your
vehicle.
The components of your truck are
designed to provide satisfactory
service if the vehicle is not loaded in
excess of either the gross vehicle
weight rating (GVWR) or the
maximum front and rear gross axle
weight ratings (GAWRs). These
ratings are listed on the vehicle
identification number (VIN) plate,
which is located on the left side rear
pillar panel below the striker (single cab) or on the left center pillar panel
beside the shoulder seat belt anchor
(crew cab).
Gross vehicle weight (GVW) is the
weight of the originally equipped
vehicle and all items added to it
after it has left the factory. This
would include bodies, lift gates,
refrigeration systems, winches,
booms, etc., the driver and all
occupants, and the load the vehicle
is carrying. The GVW must not
exceed the GVWR. Also, gross
weight on each of the front and rear
axles must not exceed the front and
rear GAWRs respectively.
Your dealer can advise you of the
proper loading conditions for your
vehicle. Using selected heavier
suspension components for added
durability may not increase any of
the weight ratings shown on the VIN
and weight rating plate.
Page 48 of 374

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 47
Model MaximumGVWR
kg (lb.) Front GAWR
Capacitykg (lb.) Rear GAWR
Capacitykg (lb.)
4500HD 6 577 (14,500) 2 431 (5,360) 4 482 (9,880)
4500XD 7 258 (16,000) 3 007 (6,630) 4 998 (11,020)
5500HD 8 142 (17,950) 3 098 (6,830) 5 888 (12,980)
5500XD 8 845 (19,500) 3 300 (7,275) 6 196 (13,660)
Maximum Front and Rear Axle
Weights
The weight of the cargo load must
be properly distributed over both the
front and rear axles. The “VIN,Weight Rating, and Greenhouse
Gas (GHG) Emissions Plate”
shows
the maximum weight that the front
axle can carry (front GAWR). It also
shows the maximum weight that the
rear axle can carry (rear GAWR).
The GVWR is the maximum
permissible loaded weight of the
vehicle and takes into account the
capabilities of the engine,
transmission, frame, springs,
brakes, axles and tires. Actual loads
at the front and the rear axles can
only be determined by weighing the
vehicle. This can be done at
highway weigh stations or other
such places. See your dealer for help. The cargo load should be
distributed on both sides of the
center line as equally as possible.
Tires
The tires on your truck must be of
the proper size and properly inflated
for the load that you are carrying.
The
“VIN, Weight Rating, and
Greenhouse Gas (GHG) Emissions
Plate” shows the originally equipped
tire size and recommended inflation
pressures.
For the vehicle plate location, see
Vehicle Identification Number (VIN)
0 343.
See “Tire Load and Inflation Table”
under Tire Pressure 0297.
Page 49 of 374

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.
Page 52 of 374

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.