NHTSA ID Number: 11006509
Manufacturer Communication Number: 24-NA-143
TSB/Document Date: 2024-08-16
Summary
This informational bulletin provides information for dealers/technicians on Software Updates on Ultium Vehicles.
Bulletin No.: 24-NA-143
Service Bulletin
Date: July, 2024
INFORMATION
Subject:
Brand:
Software Update on Ultium Vehicles
Model:
Model Year:
from
to
Lyriq
2023*
2024**
Blazer EV
2024
2024
Silverado EV
2024
2024
2022
2023
Hummer
EV Pickup
Hummer EV SUV
2024
2024
Sierra EV
2024
2024
VIN:
from
Engine:
to
*For 2023 LYRIQ's, please review PIE0779 prior to performing any software updates.
**For 2024 LYRIQ's, please review PIE0768 prior to performing any software updates.
Involved Region or Country
All Regions
Additional Options (RPOs)
Condition
Important: Review Global Warranty for Customer Satisfaction - Multiple Module Reprogramming before performing this bulletin. If open, proceed with the Customer
Satisfaction Field action to perform software update.
Cause
Electric Vehicles (EV) contain significant number of electronic modules that may require
software updates.
These software updates are important to not only resolve issues, but also enhance the
vehicle functionality.
Correction
For the effected vehicles above, GM is recommending that dealers utilize Vehicle Wide
Programming to perform and confirm all modules are updated when customer vehicles
are brought in for any service (warranty or maintenance).
In addition, for the effected vehicles above in New Vehicle Inventory, one software update
is allowed prior to sale and should be completed close to delivery to the customer.
Technicians are to utilize Vehicle Wide Programming to update all modules. Please refer
to 24-NA-113: Vehicle Wide Programming Instructions for information on programming.
Service Procedure
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
Copyright 2024 General Motors. All Rights Reserved.
Page 2
July, 2024
and the laws that apply to your dealership, you
must follow those applicable laws.
Important: This technical service bulletin (TSB) can
only be completed by certified repair facilities who have
met all specific training, tool and equipment requirements pertaining to the vehicle Brand and Model
serviced. Repairs must be performed by a technician
who has successfully completed the required training.
Refer to Service Bulletin 24-NA-113: Vehicle Wide
Programming Instructions for information on
programming.
Bulletin No.: 24-NA-143
Warranty Claim Code Information Retrieval
For information on the Warranty Claim Code, refer to
24-NA-132: Warranty Administration - Claim
Submission.
Warranty Information
For information on the Warranty Claim Submission,
refer to 24-NA-132: Warranty Administration - Claim
Submission.
Version
2
Modified
Released July 29, 2024
Revised July 31, 2024 - Revised two sentences in the Correction Section.
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 equipment, tools, 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 GM dealer for information on whether your vehicle may benefit from the
information.
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TSB/Document ID: 24-NA-143
Replacement Service Bulletin Number:
MFR Communication Date: 2024-07-31
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem:
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