GENERAL MOTORS
DCS6958
URGENT - DISTRIBUTE IMMEDIATELY
Date:

July 30, 2024

Subject: REVISION: N242436241-03 – Customer Satisfaction Program
Multiple Module Reprogramming
Revised Service Procedure
Models: 2024 Chevrolet Blazer EV
This bulletin is being revised being revised to update the Service Procedure with
vehicle wide programming. Please discard all previous copies of N242436241.

END OF MESSAGE

Customer Satisfaction Program
N242436241 Multiple Module Reprogramming
Release Date:
Revision Description:
Attention:

July 2024

Revision:

03

This bulletin is being revised to update the Service Procedure with vehicle wide
programming. Please discard all previous copies of N242436241.

All involved vehicles that are in dealer inventory must be held and not delivered to customers, dealer
traded, or used for demonstration purposes until the repair contained in this bulletin has been performed
on the vehicle.
For EV Involved Vehicles: The repairs outlined in this bulletin must only be completed at an authorized
EV dealer and repairs must be performed by a technician who has successfully completed the applicable
technical training required to perform this repair.
This program is in effect until March 31, 2026.

Make
Chevrolet

Model
Blazer EV

Model Year
From
To
2024
2024

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 2024 model year Chevrolet Blazer EV vehicles may require software updates that improve the
customer experience and optimize future over-the-air updates.
Dealers will perform a comprehensive software update.

Parts
No parts are required for this repair.
Warranty Information
Labor
Operation
9500005*

Description
Vehicle Wide Programming

ADD: To Program Radio (Includes USB File Transfer)
ADD: Set up
Important:

Labor Time
Use Actual
Programming
Time

Trans.
Type

Net
Item

ZFAT

N/A

0.5
0.2

* To avoid warranty transaction rejections, carefully read and follow the instructions below:

Note: For issues related to Warranty Administration, refer to bulletin 24-NA-132.

6125814

• The Warranty Claim Code and Total Time from the programming event 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

Copyright 2024 General Motors. All Rights Reserved.

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Customer Satisfaction Program
N242436241 Multiple Module Reprogramming
“Warranty Claim Code” field of the transaction, otherwise the transaction will reject. It is best practice to enter
the FINAL code provided by SPS2.
For information on submitting Vehicle Wide Programming field action claims, please refer to Warranty Administration
Bulletin (24-NA-132).
Warranty Claim Code Information Retrieval

6693878

If the Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS2 system as
follows:
1.
2.
3.
4.

Open TLC on the computer used to program the vehicle.
Select and start SPS2.
Select Settings (1).
Select the Warranty Claim Code tab (2).

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.
Service Procedure
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.

•

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 Vehicle Wide 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.

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Customer Satisfaction Program
N242436241 Multiple Module Reprogramming
•

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.

•

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

Important: Techline Connect screens shown above.

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Customer Satisfaction Program
N242436241 Multiple Module Reprogramming
Important: Vehicle Wide Programming will only work with a wired MDI2 connection. It is also necessary to
remove any wireless dongles from the computer being used as these will not allow the Vehicle Wide
Programming to be selectable. If the Vehicle Wide Programming is not selectable with a wired MDI2,
confirm it shows disconnected in SPS2 and then (if needed) exit out of TLC and log-in again.
Important: It is critical to remove ALL aftermarket devices connected to the DLC and all USB devices
connected to the vehicle USB ports. Additionally, all wireless Bluetooth USB connectors (mouse, keyboard,
etc.) MUST be disconnected from the computer prior to opening Techline Connect.
1.

Perform Vehicle Wide Programming. Refer to: 24-NA-113 in SI. Please read the bulletin in its entirety prior to
programming the vehicle.

2.

Verify all applicable modules have successfully updated, excluding the A11 Radio which is NOT supported by Vehicle
Wide Programming.
•

If any applicable module has NOT successfully updated:
2.1 Attempt Vehicle Wide Programming a second time.
2.2 If any applicable module fails the second attempt, attempt to program the module
individually through SPS. If the failure continues, contact Techline Customer Service
Center.

•

If all modules have successfully updated, proceed to step 3.

6693875

Note: The screenshot above is an example of Vehicle Wide Programming and may not be indicative of the specific
modules that are being programmed. VIN information has been blacked out.
Important: To avoid warranty transaction rejections, you MUST record the Total Time provided on the Warranty
Claim Code (WCC) screen shown above on the job card.
3.

Print a copy of the Warranty Claim Code screen and attach to the repair order. It is critical to record the total time in
order to close out the field action.

4.

Reprogram the A11 Radio. Refer to A11 Radio Programming and Setup in SI.

5.

Perform the A11 Radio USB File Transfer. Refer to A11 Radio Programming and Setup in SI.

Dealer Responsibility
All new, used, GM Certified Pre-Owned (CPO), courtesy transportation vehicles, dealer shuttle vehicles, CarBravo, etc.
in dealers' possession and subject to this field action 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, dealer-traded, released to auction, used for demonstration, or any other purpose.
All GM Certified Pre-Owned (CPO) vehicles currently in the dealers’ inventory within the SHIFT Digital system 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 SHIFT Digital system, or once again be used in the Courtesy Transportation Program.
Dealers are to service all vehicles subject to this program at no charge to customers, regardless of mileage, age of vehicle,
or ownership, through March 31, 2026. Customers who have recently purchased vehicles sold from your vehicle inventory,
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Customer Satisfaction Program
N242436241 Multiple Module Reprogramming
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, whenever a vehicle subject to this program enters your vehicle inventory or is in your facility for service
through March 31, 2026, you must take the steps necessary to be sure the program correction has been made before
selling or releasing the vehicle.

Dealer Reports – For USA & Export
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 a product program and still within the
warranty coverage period. See General Motors Service Policies and Procedures Manual for courtesy transportation
program details. For more details reference bulletin (17-NA-073).
To address your customer’s transportation needs while their vehicle is being serviced, you can review the customer
courtesy transportation options available. For rentals, shuttle, public transportation details reference bulletin (07-00-89037).
When a dealer puts a customer in a rental vehicle (Courtesy Transportation), the dealer would enter the “daily amount”
into the Rental Field under Net Items. Once the value is entered into the Rental Field, the additional fields of “Rental
VIN”, “Rental Days” and “Rental Reason” are displayed and must be completed.
If a dealer puts a customer in a rental vehicle (Courtesy Transportation) and uses the Pickup and Delivery to deliver the
rental to the customer then, the dealer will complete the Rental claim information per above and enter the Pickup and
Delivery $45 ($22.50 for pickup and $22.50 for drop off), both USD and CAD in Net Items, Miscellaneous.
.

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Customer Satisfaction Program
N242436241 Multiple Module Reprogramming

6568768

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

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Customer Satisfaction Program
N242436241 Multiple Module Reprogramming
March 2024
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
Your Chevrolet Blazer EV is due for an important software update that must be performed at a Chevy EV certified
dealership. Our highest priority is ensuring that you have the best ownership experience possible.
What We Will Do: Your GM dealer will perform a comprehensive software update. This update will enable your
vehicle to receive over-the-air software updates that will improve your ownership experience, including the important
enhancements below:
•
•

Customizable multi-color ambient lighting
Revised Driver Information Center graphics with battery percentage display and more

Once completed, your vehicle will have the most up-to-date technology available, including the latest infotainment
features, performance enhancements, and more. This service will be performed for you at no charge until March 31,
2026. 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 for this service. When scheduling your appointment, confirm with the dealer that
they are an EV certified dealer.
If you need transportation while your vehicle is being serviced, inquire with your dealer about their courtesy vehicle and
convenient pickup & delivery options.
If you have any questions or concerns that your dealer is unable to resolve, please contact the appropriate Customer
Assistance Center at the number listed below.
For the hearing or speech impaired, please contact our Customer Assistance Center using the Telecommunication
Relay Service by dialing 711 then providing the appropriate Customer Assistance Center number for your vehicle.
Division
Chevrolet Blazer EV
Puerto Rico – English
Puerto Rico – Español
Virgin Islands

Number
1-833-EVCHEVY
(1-833-382-4389)
1-866-467-9700
1-866-467-9700
1-866-467-9700

Text Telephones (TTY)
711 / 1-800-833-2438

We truly appreciate you taking the time to update your vehicle as we know your time is valuable. We want you to know
that we will do our best, throughout your ownership experience, to ensure that your Blazer EV provides you many miles
of enjoyable driving.
Neelie O’Connor
Global Executive Director
Customer Experience Operations
N242436241

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