N232404441 – HV Battery Loss of Propulsion – 2022 GMC Hummer EV & 2023 Cadillac Lyriq

May 25, 2023 NHTSA CAMPAIGN NUMBER: 23V367000

High-Voltage Battery Connections Improperly Welded

A loss of drive power can increase the risk of a crash.

 

NHTSA Campaign Number: 23V367

Manufacturer General MotorseBay logo, LLC

Components ELECTRICAL SYSTEM

Potential Number of Units Affected 5

 

Summary

General MotorseBay logo, LLC (GM) is recalling certain 2022 GMC HummereBay logo EV and 2023 CadillaceBay logo Lyriq vehicles. Certain connections within the high-voltage battery pack may be out of position or incorrectly welded, which can cause a loss of drive power.

 

Remedy

Dealers will replace the high-voltage battery pack, free of charge. Owner notification letters were mailed June 6, 2023. Owners may contact GM’s CadillaceBay logo customer service at 1-800-458-8006 and the EV Concierge number: 1-833-HUMMEReBay logo-EV (1-833-486-6373). GM’s number for this recall is N232404441.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

 

Check if your Vehicle has a Recall

 


Condition

General MotorseBay logo has decided that a defect which relates to motor vehicle safety exists in four 2023 model year CadillaceBay logo LYRIQ vehicles and one 2022 model year GMC HUMMEReBay logo EV Pickup vehicle. Certain connections within the high-voltage battery pack in these vehicles may be out of position or may not have been correctly welded in the manufacturing process. Under certain circumstances the vehicle may enter a reduced propulsion mode or lose propulsion, which may increase the risk of a crash.

 

Correction

Dealers will replace the high voltage battery pack.

 

Parts

QuantityPart NamePart No.
1High Voltage Battery Assembly
6Engine Coolant US12378390
Genuine GM Coolant Part# - 12378390
  • Genuine General MotorseBay logo part that fits your specific vehicle
  • Coolant
  • Part Number: 12378390
  • Manufactured to meet specifications for fit, form, and function

Last update on 2026-06-17 / Affiliate links / Images from Amazon Product Advertising API


 

Engine Coolant CA10953456

 


Frequently Asked Questions (FAQs) for Safety Recall N232404441
HV Battery Loss of Propulsion

These questions and answers are being provided to help GM dealers respond to inquiries from involved vehicle owners about the Safety Recall identified above.

 

Q1) Which vehicles are involved?

General MotorseBay logo has decided that a defect which relates to motor vehicle safety exists in one 2022 model year GMC HUMMEReBay logo EV Pickup vehicle.

 

Q2) What is the issue or condition?

Certain connections within the high-voltage battery pack in these vehicles may be out of position or may not have been correctly welded in the manufacturing process.

 

Q3) What symptoms may be experienced? What warning signs may be associated with the issue or condition described?

A battery warning light and “Service High Voltage System” message will display in the instrument panel.  A “Charging Disabled” or “Vehicle Will Not Restart” message will also display.

 

Q4) What is the remedy/repair?

Dealers will replace the high voltage battery pack.

 

Q5) What is the safety risk?  Is the vehicle safe to drive?

Under certain circumstances the vehicle may enter a reduced propulsion mode or lose propulsion, which may increase the risk of a crash.

 

Q6) Does the customer have to pay for this remedy/repair?

No, this inspection/repair will be done at no cost to the customer.

 

Q7) Is the remedy/repair available now?

Yes, please see the attached bulletin for details.

 

Q8) What should customers do until recall repairs can be completed? Are there any special instructions?

If special instructions are provided, they will be included in the notification letters to customers.

Q9) How can customers check to see if their vehicle is involved in this field action?

Customers who own a vehicle involved in the field action will be notified by mail by General MotorseBay logo, but they may also check their Vehicle Identification Number (VIN) for field actions in GM Owner Center at https://my.gm.com/recalls or via NHTSA’s website at https://vinrcl.safercar.gov/vin/.

 

Q10) If customers are concerned, can they get a rental car or courtesy transportation? 

Courtesy transportation is available for customers whose vehicles are involved in this recall and are within the warranty coverage period for the warranty which is associated with this recall.  Please refer to Warranty Administration Bulletin #17-NA-073:  Field Action Courtesy Transportation Policy for further information.

 


Chronology :

On March 22, 2023, a GM engineer submitted an issue to GM’s Speak Up For Safety program after identifying certain battery modules containing conditions that were not detected during end-of-line testing. GM opened a product investigation on April 11, 2023.

GM’s investigation determined that the pass/fail logic in certain battery module end-of-line test equipment was disabled on January 19, 2023 during a software maintenance update and inadvertently not reenabled until March 20, 2023. Manufacturing data was analyzed to identify battery packs containing suspect modules built during this production period. Four of the five vehicles containing a suspect battery pack are at GM dealerships and are not in customer possession. GM’s investigation has not identified any field claims related to this condition.

On May 18, 2023, GM’s Safety and Field Action Decision Authority decided to conduct a safety recall.

 


2 Affected Products

Vehicles

MAKEMODELYEAR
CADILLACeBay logoLYRIQ2023
GMCHUMMEReBay logo EV2022

 


8 Associated Documents

Recall Acknowledgement

RCAK-23V367-2945.pdf 700.075KB

 


Miscellaneous Document – Frequently Asked Questions (FAQs) for Safety Recall N232404441 HV Battery Loss of Propulsion

RMISC-23V367-6502.pdf 98.666KB

 


Defect Notice 573 Report

RCLRPT-23V367-8047.PDF 214.336KB

 


Remedy Instructions and TSB

RCRIT-23V367-9770.pdf 294.477KB

 


Manufacturer Notices(to Dealers,etc) – Dealer Message re Update on Stop Delivery – Reference Number N232404440 HV Battery Loss of Propulsion VINS Moved to Safety Recall N232404441

RCMN-23V367-3102.pdf 147.452KB

 


Manufacturer Notices(to Dealers,etc) – Dealer Message re N232404441-01 – Safety Recall HV Battery Loss of Propulsion

RCMN-23V367-8396.pdf 109.363KB

 


Remedy Instructions and TSB

RCRIT-23V367-6269.pdf 338.619KB

 


ISSUED Owner Notification Letter(Part 577)

RCONL-23V367-5657.pdf 54.352KB

 


Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=23V367&docType=RCL

 


 

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