Service Bulletin

Bulletin No.:

23-NA-080

Date:

May, 2023

INFORMATION
Subject:

2024 Chevrolet Silverado EV (WT) New Model Features

Brand:

Model:

Chevrolet

Silverado EV

Model Year:

VIN:

from

to

from

to

2024

2024

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Important: Available features, trim levels and
equipment content may differ in Canada. Consult the
vehicle’s window label or the GM Canada Vehicle Order
Guide.

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Vehicle Highlights

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Important: Service agents must comply with all
International, Federal, State, Provincial, and/or
Local laws applicable to the activities it performs
under this bulletin, including but not limited to
handling, deploying, preparing, classifying,
packaging, marking, labeling, and shipping
dangerous goods. In the event of a conflict between
the procedures set forth in this bulletin and the
laws that apply to your dealership, you must follow
those applicable laws.
• Silverado EV is supremely functional, all-electric
and ready to bring EVs to the mainstream
• This will be one of the first EVs engineered with
fleets in mind, bringing the functionality of
Silverado and the smooth ride and handling of an
electric propulsion system to commercial drivers
• Silverado EV will be the first Chevrolet to
implement GM’s new Ultium architecture, which
allows incredible features like the eTrunk™
• This truck is expected to offer EV segment-leading
cabin comfort, utility and storage solutions, along
with best-in-class legroom for passengers

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Silverado EV will be the first Chevrolet vehicle to
implement the new EV architecture, which is
powered by proprietary Ultium batteries
The truck’s clean-slate architecture enables a
more efficiently packaged body harness that acts
as a communication highway down the center of
the truck and helps maximize interior space

Copyright 2023 General Motors LLC. All Rights Reserved.

Transmission:

All

All

The new platform will underpin future Chevrolet
innovations and is central to GM’s vision for a
world with zero crashes, zero emissions and zero
congestion
An enhanced version of GM’s Vehicle Intelligence
Platform supports Silverado EV’s expansive
technologies and powers an electronic system
capable of providing 5 times more processing and
communication power than the current Chevrolet
full-size trucks — all to manage the complexity of
multiple electrical machines
Its architecture enables beneficial features for
both retail and fleet customers, including the
eTrunk™

SILVERADO EV IS THE NEXT
EVOLUTION OF GM’S MODULAR
ARCHITECTURE
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ARCHITECTURE
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Engine:

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GM’s all-new electric vehicle (EV) architecture
sets the foundation for the Silverado EV. GM first
introduced its all-electric future with the 2022 GMC
HUMMER EV Pickup. Chevrolet takes that
architecture and brings it to the everyday vehicle
with Silverado EV.
The architecture represents the third major
generation of GM’s dedicated electric propulsion
technology. However, unlike the previous
generations, this new architecture is not a specific
vehicle platform. Rather, it’s a global platform
that’s flexible enough to build a wide range of
trucks, SUVs, crossovers, cars, and commercial
vehicles. Silverado EV is the latest in the lineup.
By integrating the structure with the battery packs,
the vehicle is more durable, more structurally
sound, and more than capable to handle the
toughest jobs.

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May, 2023
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SAFETY IS BUILT INTO THE BODY
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Because Silverado EV’s architecture and Ultium
batteries were simultaneously engineered, its
propulsion system cleverly doubles as part of the
vehicle’s structure. Large-scale, high-energy
Ultium battery cells are the system’s key building
blocks. They’re mounted beneath the passenger
compartment for optimized weight distribution and
a lower center of gravity, which helps improve
overall handling.
The cells are housed within modules. The
modules are contained within battery pack
enclosures that have stiffening ribs to increase
torsional rigidity. Added torsional rigidity allows for
more suspension travel, needed when tackling
different road conditions.
Two high-strength structural shear plates connect
the battery pack lower enclosure to the front and
rear suspension cradles for added strength and
stiffness.

ELECTRICAL ARCHITECTURE
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The vehicle’s EV architecture removes several
significant physical constraints associated with
conventional trucks, including the gas tank,
engine, radiator, exhaust pipes and the floor
tunnel. This allowed the wiring engineers to take a
blank-slate approach and develop a new wiring
harness architecture for Silverado EV.
With the goal of reducing mass, complexity and
harness interconnects to improve reliability, the
team developed a single main wire harness that
runs through the center of the floor. It exits in the
front and in the back panel in a way that most
efficiently minimizes the amount of wire needed.

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Bulletin No.: 23-NA-080
The truck’s main body wire harness integrates the
typical separate chassis harness found in the
current gas engine full-size trucks, which
eliminates the interconnections between wire
harnesses that impact vehicle reliability, ultimately
improving customer satisfaction.
This main body wire harness acts as the vehicle’s
central nervous system. It delivers power and
relays signals and information to more than 260
electrical components, thereby playing a critical
role in all vehicle systems, including active safety,
active suspension, comfort, infotainment, and
propulsion. It’s something customers never see,
but it’s a crucial vehicle component that enables
the technologies they want. A wiring harness
should be invisible and indiscernible to the
customer, but highly reliable.
A typical body harness in today’s vehicles has an
“H”-type shape that runs down the sides of the
floor by the doors. It interconnects to other
harnesses under the hood, under the body and in
the chassis. The Silverado EV body harness is
routed in the center of the floor away from the
doors.
This strategic approach reduces complexity and
better enables entry/egress at the doors because
there is no wiring to impede the pathway like in an
“H” configuration. It also moves critical wiring
away from the side crash zones of the vehicle and
acts like a communication highway, distributing
power and signals to arms in the underhood and
legs in the rear underbody.

ENHANCED VEHICLE INTELLIGENCE
PLATFORM
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An enhanced version of GM’s Vehicle Intelligence
Platform (VIP) supports Silverado EV’s expansive
technologies and powers an electronic system
capable of providing five times more processing
and communication power than the current
Chevrolet full-size trucks — all to manage the
complexity of multiple electrical machines.
The greater performance supports Silverado EV’s
expansive in-vehicle technologies, allowing its
electric propulsion systems, next-gen Super
Cruise hands-free driver assistance feature,
advanced active safety systems, and infotainment
and connectivity features to run in conjunction.
Ethernet connections of 100 MBs and 1 Gbps
offer rapid data transmissions both within the truck
and to outside sources.
Another prominent customer-facing benefit is the
ability to perform smartphone-like, Over-the-Air
(OTA) software updates, while also enabling
functionality upgrades throughout the lifespan of
the vehicle.

Bulletin No.: 23-NA-080

May, 2023

CYBERSECURITY
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Cybersecurity is a key pillar of VIP. The system’s
DNA includes protective features at both the
hardware and software levels that reflect GM’s
foresight in this regard. In fact, the company was
among the first automakers to create an integrated
and dedicated global Product Cybersecurity
organization, a team of experts within the
company focused on protecting customers against
the potential risk of unauthorized access to
vehicles and customer data.
GM also chairs the Automotive Information
Sharing and Analysis Center (Auto ISAC), a
community of private- and public-sector partners
that shares and analyzes intelligence about
emerging cybersecurity risks for the automotive
industry. Belonging to this community helps the
company build the resiliency of its connected
vehicle systems by proactively incorporating
strong security measures into every phase of a
vehicle’s life cycle.

of new batteries as well as for adjacent industries.
Ultium Batteries already feature a modular design
allowing for easy reuse and/or recycling.

2-MOTOR, e4WD CAPABILITY
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PROPULSION
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Silverado EV’s all-electric propulsion system
offers the same Silverado DNA to get the job done
in a smooth, zero-emissions drive
Silverado EV is the first Chevrolet product
powered by GM's Ultium Battery system, which
combines a proprietary cell chemistry, smart
modules with wireless Battery Management
System and advanced thermal management
Silverado EV was built from the ground up using
GM’s innovative Ultium Platform
The truck launches with a 24-module battery pack
that works in conjunction with two propulsion
motors to make efficient use of up to ~ 200 kWh of
available energy for long driving range.
bevHEAT — an innovative heat pump thermal
system — maximizes every watt possible to boost
cold-weather range and supply warm air to the
cabin within a minute of a customer starting the
vehicle in normal conditions with a charged
vehicle
One Pedal Driving harnesses the power of
regenerative braking to help drivers maximize
range
Silverado EV launches with a 24-module battery
system for the Work Truck. These modules are
double stacked and built into a rectangular battery
pack enclosure. The pack — capable of storing up
to ~200 kWh of energy — is enclosed with a
structural foundation on the perimeter to help
protect the battery in the event of a crash
GM’s proprietary Ultium Batteries are designed for
the long haul and are meant to last for the life of
the vehicle with a manufacturing process that is as
sustainable as possible. Recently, Ultium Cells
LLC (a joint venture between General Motors and
LG Energy Solutions) announced an agreement to
recycle up to 100% of material scrap from battery
cell manufacturing, including Silverado EV battery
cells. The material can be used in the production

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The truck's drive system combines a single-motor
front and rear drive unit to advance the capability
Silverado owners have come to depend on.
The motor duo takes electrical energy stored in
the battery pack and converts it into mechanical
energy.
The rear motor drives the rear wheels through a
fixed gear ratio of 10.5:1. The front motor drives
the front wheels through a fixed gear ratio
of 13.3:1.
The ultra-responsive, permanent magnet motors
are bar-wound, with an integral gear on the rotor
that transfers torque from the motor to the wheels
to optimize handling, traction and stability control.
The e4WD system delivers power to all four
wheels and the system adjusts automatically to
the driving conditions. It continuously varies the
drive power to the front and rear wheels to
maximize driving efficiency and improve driving
dynamics.

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bevHEAT (THERMAL MANAGEMENT)
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EV range can suffer when temperatures turn cold.
That’s because battery energy is required to
create heat for the cabin as well as the high
voltage battery, leaving less available energy to
power the vehicle. Silverado EV combats this
challenge with an innovative approach to thermal
management.
The truck’s patented bevHEAT system utilizes a
single coolant loop for all subsystems connected
to a heat-pump HVAC system. This seamlessly
allows for energy to transfer between the battery/
power electronics and the cabin, minimizing

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May, 2023

electrical energy used. The overall efficiency of
the system is enabled by a condenser in the
cabin.
bevHEAT saves every watt possible to maximize
range while improving cabin comfort. It does
so by:
• Using the high-voltage battery for thermal
energy storage when the truck is plugged in
and charging
• Scavenging waste heat from the propulsion
system for cabin and battery heating
• Using a high-efficiency electric heat pump to
heat and cool the cabin
• Utilizing a “dual-layer” cabin HVAC module that
enables partial recirculation in cold weather for
improved efficiency and performance
• Enables up to 350-kW DC fast charging by
automatically cooling the battery and the
charge port
• Provides cooling to support up to 10,000-lbs
(4,536 kg) (24MY WT with 24 mod) towing
capability with the air conditioning on full blast

Bulletin No.: 23-NA-080

to none on the fly will be particularly useful when
entering a highway or when encountering in
stop-and-go traffic
• When One Pedal Driving is set to Off, Silverado
EV automatically provides the lowest level of
coasting regenerative braking and requires the
use of the brake pedal to bring the truck to a
complete stop. On and High are progressively
stronger levels of regenerative braking that, in
most driving situations, allow a driver to stop the
truck without using the brake pedal.
• Friction brakes are used in conjunction with the
electric motors to slow the truck when full
regenerative braking is not possible, such as
when the battery is full. As the truck slows,
high-fidelity motor controls bring the truck to a
smooth and complete stop. Once stopped, friction
brakes hold Silverado EV stationary without the
need for the brake pedal. The brake lights
illuminate as deceleration begins. They remain lit
as the truck slows or if it comes to a
complete stop.
Note: One Pedal Driving does not eliminate the need
to use the brake pedal altogether, especially in
emergency situations.

ONE PEDAL DRIVING
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One Pedal Driving gives customers ultimate
control of Silverado EV’s electric propulsion
system by letting them operate the truck using
only the accelerator pedal in most driving
conditions.
Silverado EV advances the One Pedal Driving
experience currently found on the 2022 Chevrolet