GENERAL MOTORS
DCS7239
URGENT - DISTRIBUTE IMMEDIATELY
Date:

June 2, 2025

Subject: N252502390 - Service Update
Multiple Module Reprogramming
Models: 2023 Cadillac LYRIQ
2022 Chevrolet BrightDrop EV600
2023 Chevrolet BrightDrop Zevo 600
2022-2023 GMC HUMMER EV

General Motors is releasing Service Update N252502390 today.
What Should Dealers Do: Dealers should review IVH or the Dealer Maxis reports
for open VINs in their inventory. Dealers can view the attached bulletin and it
will also be displayed in Service Information tomorrow.
A Stock VIN list is not included as our records show there are no vehicles in
dealer new inventory.

END OF MESSAGE

Service Update
N252502390 Multiple Module Reprogramming
Release Date:
Attention:

June 2025

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 June 30, 2036.
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.
Model Year

Make
Cadillac
Chevrolet
Chevrolet
GMC

Model
LYRIQ
BrightDrop EV600
BrightDrop Zevo 600
HUMMER EV

From
2023
2022
2023
2022

To
2023
2022
2023
2023

Investigate Vehicle History (IVH) in the GM Global Warranty Management system should always be checked to confirm
vehicle involvement prior to beginning any required inspections and/or repairs.
Condition
Correction

Certain vehicles listed above 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
9500013*

Description
Vehicle Wide Programming

ADD: Reprogram Battery Energy Control Module with SPS
ADD: To Program Radio (USB File Transfer only)
HUMMER EV, Brightdrop
LYRIQ
ADD: To Set Up Vehicle for VWP

Labor Time
Use VWP
receipt time**

0.3

Trans.
Type

Net
Item

ZFAT

N/A

0.5
1.0
0.2

** In base time field, enter time shown on Vehicle Wide Programming receipts. Round up to nearest .10.
Important:

* 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

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Service Update
N252502390 Multiple Module Reprogramming
• 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
“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.
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Service Update
N252502390 Multiple Module Reprogramming
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.

•

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.

•

The Body Control Module (BCM) is the primary module (for VIP EV vehicles) that TLC reads to determine the VIN of
the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the BCM also needs
to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate.

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

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Service Update
N252502390 Multiple Module Reprogramming

5644477

Important: Techline Connect screens shown above.
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.
Important: After Radio USB programming is complete, verify the software version on Radio Screen
matches the current version shown on the Warranty Claim Code (WCC) screen in Techline Connect (TLC).
Refer to the WCC screen for instructions on how to navigate to the software version within the Radio menu.
Important: Battery Energy Control Module MUST be completed prior to Vehicle Wide Programming. Errors
or damage to the module may occur if not programmed first.
1.

Reprogram Battery Energy Control Module. Refer to K16 Battery Energy Control Module: Programming and Setup in
SI. This MUST BE COMPLETED prior to VWP programming.

2.

Within SPS, perform the following steps for the A11 Radio. Refer to A11 Radio Programming and Setup in SI. (Radio
SPS programming will be completed during vehicle wide programming):
2.1 Prepare for USB File Transfer.
2.2 USB File Transfer.

3.

Insert the USB drive into the vehicle while in Park, Ignition ON, infotainment system ON.

4.

Follow vehicle on screen prompts to complete the USB software update.

5.

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

6.

Verify all applicable modules display “SUCCESS” or “SKIPPED”.
•

If any applicable module does NOT display “SUCCESS” or “SKIPPED”:

6.1 Attempt Vehicle Wide Programming a second time.
6.2 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.
6.3 Perform Vehicle Wide Programming an additional time to receive a “Status Completed” or “Status
Blocked” message, allowing the field action to be closed. Proceed to step 7.
•

If all modules have successfully updated, proceed to step 7.

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Service Update
N252502390 Multiple Module Reprogramming

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.
7.

Print a copy of the Warranty Claim Code screen and attach to the repair order. “Status Completed” or “Status Blocked”
must be achieved to close out the field action. It is also critical to record the total time in order to close out the Field
Action.

Unsuccessful Programming
For Techline Connect Support Center help in the US, please open a TCSC support case in the Dealer Case
Management tool, located within Global Connect. Go to the app center and type in “Dealer Case Management System
and Resources”, and then select “New Techline Case”.
For all other regions use:
Canada: 1-800-828-6860 (English) / 1-800-503-3222 (French) 8-8 EST Monday-Saturday
Mexico: 800-522-9984
Dealer Responsibility
Whenever a vehicle subject to this service update enters your vehicle inventory or is in your facility for service through
June 30, 2036, you must take the steps necessary to be sure the service update correction has been made before selling
or releasing the vehicle.
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.
Dealer Reports – For USA & Export
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
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