N202323690

Customer Satisfaction Program
N202323690 Advanced Onboard Diagnostics Upgrade
Release Date:
Attention:
April 2021
Revision:
00
This is a phased launch.
ONLY EV Certified dealers can complete this repair.
This program is in effect until May 31, 2023.
Make
Chevrolet
Model
Bolt EV
Model Year
From
To
2019
2019
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 2019 model year Chevrolet Bolt EV vehicles have a new software package of advanced onboard
diagnostics.
Dealers will update the software on the body control module and HPCM2 module.
Parts
Note: Use the vehicle identification number (VIN) and the GM Electronic Parts Catalog (EPC) to determine which battery
section or pack to order. Lithium Ion material is on part exchange in the US and Canada. For ordering instructions, use
bulletin #18-NA-236 for modules and #19-NA-194 for packs as directed by TAC. For markets outside of US and Canada;
the local TAC organization should be contacted for direction.
Warranty Information
Labor
Operation
9105423*
9105424*
9105664*
Description
EV Battery Parameter inspection, BCM Programming and HPCM 2
Programming
Cell Battery Module Replacement (Includes EV Battery Parameter
inspection, BCM Programming, HPCM 2 Programming and Smoke
Test)
Row 1
Row 2
Row 3
Row 4
Row 5
Drive Motor Battery Replacement and Shipping Preparation
(Includes EV Battery Parameter inspection, BCM Programming and
HPCM 2 Programming)
Labor
Time
1.1
6.4
6.2
6.9
7.3
6.6
4.3
Trans.
Type
ZFAT
Net
Item
**
ZFAT
**
ZFAT
**
Important: ** GM will provide reimbursement to the dealership for providing the service of picking up and returning a
customer’s vehicle while this repair is completed. It must be noted on the job card that this service was provided.
Reimbursement is limited to $7.50 each way ($15 maximum per job card) and is to be submitted in the Net/Shuttle field
of the Field Action transaction.
Important: * To avoid warranty transaction rejections, carefully read and follow the instructions below:
•
The Warranty Claim Code must be accurately entered in the “Warranty Claim Code” field of the transaction.
•
When more than one Warranty Claim Code is generated for a programming event, it is required to document all
Warranty Claim Codes in the “Correction” field on the job card. Dealers must also enter one of the codes in the
“Warranty Claim Code field of the transaction, otherwise the transaction will reject. It is best practice to enter
the FINAL code provided by SPS/SPS2.
Warranty Claim Code Information Retrieval
If the Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS system as follows:
1.
2.
3.
4.
Open TLC/TIS on the computer used to program the vehicle.
Select and start SPS/SPS2.
Select Settings.
Select the Warranty Claim Code tab.
Copyright 2021 General Motors. All Rights Reserved.
Page 1 of 10
Customer Satisfaction Program
N202323690 Advanced Onboard Diagnostics Upgrade
The VIN, Warranty Claim Code and Date/Time will be listed on a roster of recent programming events. If the code is
retrievable, dealers should resubmit the transaction making sure to include the code in the SPS Warranty Claim Code
field.
Note: Most vehicles involved will only require a programming update but there is a slight chance that a high voltage
battery pack repair/replacement will be required. Advise waiting customers prior to starting that the time required will
likely be about an hour but could require longer if parts replacement is required.
Note: It is recommended dealers assure their EV Battery Depowering Tool (EL-50332-B) has the most recent software
update. Software updates are available from Special Tools and Software Updates accessed through GlobalConnect.
Service Procedure
Note: Stable 12 V battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage
will interrupt the procedure. 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.
•
•
•
Do not plug-in charge the vehicle or perform aggressive acceleration and/or braking maneuvers just prior to
performing the GDS2 parameter inspection procedure.
Do not clear DTC Information before GDS2 parameter inspection procedure.
Do not program any control module until instructed to do so.
Page 2 of 10
Customer Satisfaction Program
N202323690 Advanced Onboard Diagnostics Upgrade
Procedure 1 GDS2 Parameter Inspection
5816631
1.
Perform a vehicle diagnostic system check prior to using this diagnostic procedure. Refer to Diagnostic System Check
– Vehicle in SI.
• If any Powertrain DTCs (Pxxxx) are set, store any Freeze Frame/Failure Records and go to Diagnostic
Trouble Code (DTC) List – Vehicle in Si. Return to this procedure after DTC repair.
• If no DTCs are set, go to Step 3.
2.
Vehicle ON, use GDS2 to view the following data screens while connected to the vehicle:
• From Module Diagnostics, select Hybrid Powertrain Control Module 2.
• Data Display Folder
• Data Display Icon
• Voltage Data
• Observe and record the parameters
Hybrid/EV Battery Voltage Sensors Average and Minimum Hybrid/EV Battery Module Voltage
Hybrid/EV Battery Voltage Sensors Average (Value A) :___________
Minimum Hybrid/EV Battery Module Voltage (Value B) :___________
3.
Subtract the minimum voltage from the average voltage.
Value A – Value B : ___________
Page 3 of 10
Customer Satisfaction Program
N202323690 Advanced Onboard Diagnostics Upgrade
•
If the voltage difference is less than or equal to 0.08V, proceed directly to Procedure 3: Software Flashing
Procedure.
•
If the voltage difference is greater than 0.08V, Observe and record the value of parameter Hybrid/EV
Battery Voltage Sensor with Minimum Voltage and Hybrid/EV Battery Pack State of Charge and
proceed to Step 4.
Hybrid/EV Battery Voltage Sensor with Minimum Voltage (Value C):_________
Hybrid/EV Battery Pack State of Charge (Value D):__________
4.
Observe the battery pack state of charge parameter (Value D), is the SOC 30% or greater?
• If the battery pack SOC is less than 30%:
1. Plug in Charge the battery pack to between 30 to 50% (do NOT charge the battery pack to full at
this time).
2. Remove the charge cord and allow the battery to rest (vehicle OFF) for 30 minutes.
3. Return to step 1 of Procedure 1: GDS2 Parameter Inspection Procedure.
•
If the battery pack SOC is greater than 30%, proceed to step 5.
5.
FOR MARKETS WITH CELL MODULE REPLACEMENT CAPABILITIES (Including US, Canada, and South
Korea): There is at least one battery cell module row that requires replacement. Advise the customer and
coordinate rental vehicle, transportation home, etc. as required. Most vehicles will only require a single cell battery
module section/row. To determine if an additional cell battery module section/row or if the entire battery pack
assembly requires replacement proceed to Procedure 2: Multiple Cell Group Identification Procedure.
6.
FOR MARKETS WITHOUT CELL MODULE REPLACEMENT CAPABILITIES: Advise the customer that an
entire replacement battery pack will need to be ordered to service their vehicle. Do not update the HPCM2
with the latest calibration until the pack is replaced. Provide the customer with a courtesy loaner vehicle
until the repair can be performed.
Procedure 2 Multiple Cell Group Identification Procedure
1.
Vehicle ON, use GDS2 to view the following data screens while connected to the vehicle:
• From Module Diagnostics, select K16 Battery Energy Control Module
• Data Display Icon
• Voltage Data 1, Voltage Data 2, and then Voltage Data 3
• From Identification Information Folder, select the Identification Information Icon.
Note: For emailing GDS2 session logs in the US, contact [email protected]. In Canada, contact
[email protected]. All other regions must use their established local technical support center.
2.
Start a GM TAC case for the vehicle. Email the GDS2 session log from the vehicle to GM TAC. Refer to the latest
version of PIP4902 for assistance in creating and emailing a session log.
3.
TAC will compare the data from the session log and advise which battery section(s) to replace. In some cases, TAC
may advise that the entire pack should be replaced due to multiple cells with low voltage.
4.
Replace the identified cell battery module. Refer to Cell Battery Module Replacement (Row 1-5) in SI.
5.
After repair proceed to Procedure 3: Software Flashing Procedure.
Note: While waiting for a replacement battery cell module row to arrive, do not charge the vehicle or drive more than a
half mile. Follow bulletin #18-NA-236 for module ordering instructions.
Important: Do not flash any software before repairs are completed. Keep state of charge at or below 90%.
Procedure 3 Software Flashing Procedure
This update will perform the following:
• Hybrid/EV Powertrain Control Module 2
• Revise existing Hybrid/EV Battery Circuit Performance DTCs P0B3C, P0B41, etc.
• Implement new DTCs P0BBD.
Page 4 of 10
Customer Satisfaction Program
N202323690 Advanced Onboard Diagnostics Upgrade
•
•
• Implement new GDS2 parameters to support DTCs P0BBD.
• Restore maximum battery pack charging to 100% capability.
Body Control Module
Coordinated change to implement thermal propagation warning feature.
Caution: Before downloading the update files, be sure the computer is connected to the internet through a network
cable (hardwired). DO NOT DOWNLOAD or install the files wirelessly. If there is an interruption during programming,
programming failure or control module damage may occur.
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.
• Turn OFF or disable systems that may put a load on the vehicle battery such as: interior lights, exterior lights
(including daytime running lights) HVAC etc.
• Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance
(I/M) system status indicators to NO.
5644477
Page 5 of 10
Customer Satisfaction Program
N202323690 Advanced Onboard Diagnostics Upgrade
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.
1.
Reprogram the K114B Hybrid/EV Powertrain Control Module 2. Refer to K114B Hybrid/EV Powertrain Control
Module 2: Programming and Setup in SI.
Page 6 of 10
Customer Satisfaction Program
N202323690 Advanced Onboard Diagnostics Upgrade
2.
Reprogram the K9 Body Control Module. Refer to K9 Body Control Module Programming and Setup in SI.
5644478
5431209
Page 7 of 10
Customer Satisfaction Program
N202323690 Advanced Onboard Diagnostics Upgrade
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.
3.
Record SPS Warranty Claim Code on job card for warranty transaction submission.
Prior to returning the vehicle to the customer:
1.
2.
Vehicle ON, perform the Diagnostic System Check – Vehicle.
• If any DTCs are set, store any Freeze Frame/Failure Records and go to Diagnostic Trouble Code (DTC)
List – Vehicle in Si. Return to this procedure after DTC repair.
• If no DTCs are set, go to Step 2.
Vehicle ON, use GDS2 to view Specific DTC status:
• From Module Diagnostics, select Hybrid Powertrain Control Module 2.
• Select Diagnostic Trouble Codes folder
• Select Specific DTC
• Ensure the following DTCs have Ran and Passed this ignition: DTC P0BBD.
• If the DTCs have ran and passed proceed to Step 3
• If the DTCs have failed go to Diagnostic Trouble Code (DTC) List – Vehicle
• If DTC P0BBD is not supported an error has occurred during programming, repeat Procedure 3: Software
Flashing Procedure.
5816637
3.
If the customer is not waiting, plug-in charge the vehicle and ensure battery pack state of charge is 80% or greater.
80% state of charge is represented when 3 bars remain unlit on the vehicle instrument panel gauge display. You
may use Level 1, Level 2 or DC fast charging (note: After programming, the vehicle must be driven at vehicle
speeds greater than 3 km/h (2 mph) to enable DC fast charging).
Dealer Responsibility
All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers' possession
and subject to this program must be held and inspected/repaired per the service procedure of this bulletin before
customers take possession of these vehicles. Involved vehicles must be held and not delivered to customers, dealertraded, released to auction, used for demonstration, or any other purpose.
All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System
(CPOIS) will be de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting
an accepted/paid warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified
for sale within the CPOIS system, or once again be used in the CTP program.
Page 8 of 10
Customer Satisfaction Program
N202323690 Advanced Onboard Diagnostics Upgrade
Dealers are to service all vehicles subject to this program at no charge to customers, regardless of mileage, age of vehicle,
or ownership, through May 31, 2023. Customers who have recently purchased vehicles sold from your vehicle inventory,
and for which there is no customer information indicated on the involved vehicle listing, are to be contacted by the dealer.
Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. A
copy of the customer letter is provided in this bulletin for your use in contacting customers. Program follow-up cards
should not be used for this purpose, since the customer may not as yet have received the notification letter.
In summary, through May 31, 2023, whenever a vehicle subject to this field action enters your vehicle inventory you must
take the steps necessary to ensure the program correction has been made before selling the vehicle. In addition, for
vehicles entering your facility for service, you are required to ensure the customer is aware of the open field action and
make every reasonable effort to implement the program correction as set forth in this bulletin prior to releasing the vehicle.
Dealer Reports
For dealers with involved vehicles, a listing has been prepared and will be available through GM GlobalConnect Maxis
Field Action Reports or sent directly to export dealers. The Inventory tab of the dealer reports will contain VINs that
apply to this field action. This information is intended to assist dealers with the PROMPT COMPLETION of these
vehicles. The Customer In-Service tab will contain customer names and addresses from Motor Vehicle Registration
Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete
this field action may be a violation of law in several states.
Courtesy Transportation – For USA & Canada
Courtesy transportation is available for customers whose vehicles are involved in this customer satisfaction program.
Customer Notification
USA & Canada - General Motors will notify customers of this program on their vehicle (see copy of customer letter included
with this bulletin).
Export - Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor
Vehicle Safety Act. For owners outside these areas, dealers should notify customers using the attached sample letter.
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 9 of 10
Customer Satisfaction Program
N202323690 Advanced Onboard Diagnostics Upgrade
May 2021
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We are pleased to announce that a free software upgrade is available for your 2019 model year Chevrolet Bolt EV.
This new software is a package of advanced onboard diagnostics that GM developed for your vehicle’s high-voltage
battery system. The software is available now at your Chevrolet dealer as a free upgrade to your Bolt EV.
What We Will Do: Your GM dealer will update the software on your vehicle’s body control module and hybrid/EV
powertrain control module 2 (HPCM2). This service will be performed for you at no charge until May 31, 2023. After
that, any applicable warranty will apply.
What You Should Do: To limit any possible inconvenience, we recommend that you contact your dealer as soon as
possible to schedule an appointment to receive the software upgrade. When scheduling your appointment, confirm with
the dealer that they are an EV certified dealer.
If you have questions or concerns that your dealer is unable to resolve, please contact the EV Concierge team at 833EVCHEVY (833-382-4389). Hours of operation are Monday through Friday, 8:00 AM to 7:00 PM ET.
We want you to know that we will do our best, throughout your ownership experience, to ensure that your Chevrolet Bolt
EV provides you many miles of enjoyable driving.
Neelie O’Connor
Global Executive Director
Customer Experience Operations
N202323690
Page 10 of 10
GLOBAL SAFETY FIELD INVESTIGATIONS
DCS5776
URGENT - DISTRIBUTE IMMEDIATELY
Date:
April 29, 2021
Subject: N202323690 - Customer Satisfaction Program
Advanced Onboard Diagnostics Upgrade
Models: 2019 Chevrolet Bolt EV
To:
All General Motors Dealers
General Motors is releasing Customer Satisfaction Program N202323690
today. The total number of U.S. vehicles involved is 6,993. Please see the
attached bulletin for details.
This software is not yet available for 2020-2021 model year vehicles. General
Motors is working diligently to finalize updated software for the 2020-2021 model
years. When this software is available, this Customer Satisfaction Program will
be revised to include 2020-2021 model year vehicles.
Customer Letter Mailing
The customer letter mailing will begin in the near future.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH)
screen will be updated April 30, 2021 or sooner. A list of involved vehicles in
dealer new inventory is attached to this message. Please hold all warranty
transactions until IVH has been updated. Only EV Certified dealers can
complete this repair. If you are not an EV certified dealer and need to know
where the closest EV certified dealer is located, please contact the Dealer
Business Center.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS