Service Update
N222365900 High Voltage Battery Software Update
Release Date:
Attention:

April 2022

Revision:

00

This service update includes vehicles in dealer inventory and customer vehicles that return to the
dealership for any reason. This bulletin will expire at the end of the involved vehicle’s New Vehicle
Limited Warranty period.
This Field Action must only be completed by Chevrolet EV certified dealers who have met all
Bolt specific training, tool and equipment requirements. Repairs must be performed by a
technician who has successfully completed the required training.
This bulletin is applicable to only certain model year 2022 Bolt EV and Bolt EUV vehicles.

Make

Model
Bolt EV
Bolt EUV

Chevrolet

Model Year
From
To
2022
2022
2022
2022

RPO

Description

Involved vehicles are marked “open” on the Investigate Vehicle History screen in GM Global Warranty Management
system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections
and/or repairs.
Condition

Correction

Certain 2022 model year Chevrolet Bolt EV and Bolt EUV vehicles require an Advanced Diagnostic
Software package.
There is no safety issue associated with this condition.
Dealers will reprogram modules using the ZFA – Field Action Multimodule Coordinated Sequence.

Parts
No Parts Required
Warranty Information
Labor
Operation
9106068

Description
ZFA – Field Action Multimodule Coordinated Sequence

Labor
Time
0.7

Trans.
Type
ZFAT

Net
Item
N/A

Important: The ZFA – Field Action Multimodule Coordinated Sequence programming must be used. Failure to
use this sequential programming procedure will result in claim rejection.
Service Procedure
Programming
Note:

Carefully read and follow the instructions below.

•

Ensure the programming tool is equipped with the latest software and is securely connected to the data link
connector. If there is an interruption during programming, programming failure or control module damage may
occur.

•

Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will
interrupt programming. Install a GM Authorized Programming Support Tool to maintain system voltage. Refer to
www.gmdesolutions.com for further information. If not available, connect a fully charged 12 V jumper or booster
pack disconnected from the AC voltage supply. DO NOT connect a battery charger.

•

Follow the on-screen prompts regarding ignition power mode but ensure that anything that drains excessive
power (exterior lights, HVAC blower motor, etc.) is off.

•

Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M)
system status indicators to NO.

Important:
The service technician always needs to verify that the VIN displayed in the TLC left side drop down menu
and the top center window match the VIN plate of the vehicle to be programmed prior to using Service Programming
System 2 (SPS2) for programming or reprogramming a module.

•

For the TLC application, service technicians need to always ensure that the power mode (ignition) is “ON” before
reading the VIN from the vehicle’s VIN master module and that they do not select a VIN that is already in the
TLC application memory from a previous vehicle.

Copyright 2022 General Motors. All Rights Reserved.

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Service Update
N222365900 High Voltage Battery Software Update
•

If the VIN that shows up in the TLC top center window after correctly reading the VIN from the vehicle does not
match the VIN plate of the vehicle, manually type in the VIN characters from the vehicle VIN plate into the TLC
top center window and use these for programming or reprogramming the subject module with the correct vehicle
VIN and software and/or calibrations.

Caution:
Be sure the VIN selected in the drop-down menu (1) is the same as the vehicle connected (2) before
beginning programming.

5743643

Important:

If the vehicle VIN DOES NOT match, the message below will be shown.

5877000

5644477

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Service Update
N222365900 High Voltage Battery Software Update

5431207

Important:

Techline Connect and TIS2WEB screens shown above.

Important:
If the same calibration/software warning is noted on the TLC or SPS Summary screen, select OK and
follow screen instructions. After a successful programming event, the WCC is located in the Service Programming
System dialogue box of the SPS Summary screen. No further action is required. Refer to the Warranty section of the
bulletin.

5644478

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Service Update
N222365900 High Voltage Battery Software Update

5431209

Note: The screenshots above are an example of module programming and may not be indicative of the specific
module that is being programmed. Module selection and VIN information have been blacked out.
Important:
To avoid warranty transaction rejections, you MUST record the warranty claim code provided on the
Warranty Claim Code (WCC) screen shown above on the job card. Refer to callout 1 above for the location of the
WCC on the screen.
1.

Reprogram the sequential multiple modules through SPS/Techline Connect (SPS and Techline Connect screens
shown) by selecting “ZFA – Field Action Multimodule Coordinated Sequence” on the select controller screen and
select “Programming” for the Select Function/Sequence”. Select “Next” and follow all on screen instructions. In
SPS, scroll down to view all instructions prior to programming.

5924567

Note: The first module in the sequence is the K114B HPCM2 which is programmed with Ignition OFF and the brake
pedal depressed to keep communications awake. The second module in the sequence is the K16 BECM, which is
programmed with Ignition ON/Propulsion OFF. The third module is the K9 BCM, which is also programmed with
Ignition ON/Propulsion OFF.

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Service Update
N222365900 High Voltage Battery Software Update
Note: Failure to make the transition to Ignition ON/Propulsion OFF may result in having to restart the sequential
programming. Sequential programming may SKIP some modules if they already have the latest available calibration.
2.

Remain in the vehicle with the brake pedal depressed during the programming of the K114B HPCM2. When the
green check mark indicates the K114B HPCM2 has been re-programmed, as shown in the image, release the brake
pedal and transition to Ignition ON/Propulsion OFF.

3.

After programming has fully completed, clear DTCs. Let the vehicle sleep for 1 minute after removing the MDI,
powering OFF, and closing all doors.

Dealer Responsibility
Dealers must take the steps necessary to ensure that the service update correction has been made to all involved vehicles
in dealer inventory before selling or dealer-trading the vehicle.
All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers' possession
and subject to this bulletin must be held and inspected/repaired per the service procedure of this bulletin before customers
take possession of these vehicles.
Dealer Reports
The Inventory tab of the Open Vehicle Report will contain Service Update Bulletin VINs that apply to this field action.
This information is intended to assist dealers with the PROMPT COMPLETION of these vehicles. The Customer InService tab will not contain Service Update Bulletin VIN data because the intent of a Service Update Bulletin is to not
inconvenience a customer with a special trip for service. Service Update Bulletins are to be completed when the
customer is in for a regularly scheduled visit.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of
conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained
technicians have the tools, equipment, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT
assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your dealer for information on whether your
vehicle may benefit from the information.

We Support
Voluntary Technician
Certification

Page 5 of 5

GLOBAL SAFETY FIELD INVESTIGATIONS
DCS6112
URGENT - DISTRIBUTE IMMEDIATELY
Date:

April 5, 2022

Subject: N222365900 - Service Update
High Voltage Battery Software Update
Models: 2022 Chevrolet Bolt EV and Bolt EUV
To:

All General Motors Dealers

General Motors is releasing Service Update N222365900 today. This bulletin
is applicable to certain model year 2022 Bolt EV and Bolt EUV vehicles. The
total number of U.S. vehicles involved is approximately 1,258. Please see the
attached bulletin for details.
These vehicles are either in transit or recently arrived at your dealership and
will require the Advanced Diagnostic Software procedure contained in the
attached bulletin prior to sale. They do NOT require a High Voltage Battery
replacement.
This Field Action must only be completed by Chevrolet EV certified dealers
who have met all Bolt specific training, tool and equipment requirements.
Repairs must be performed by a technician who has successfully completed
the required training.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen will
be updated April 5, 2022. A list of involved vehicles in dealer new inventory is attached
to this message.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS