GLOBAL SAFETY FIELD INVESTIGATIONS
DCS6597
URGENT - DISTRIBUTE IMMEDIATELY
Date:

June 2, 2023

Subject: N232396992 - Customer Satisfaction Program
Super Cruise Map Enhancements
Models: 2022 GMC HUMMER EV
To:

All General Motors Dealers

General Motors is releasing Customer Satisfaction Program N232396992
today. The total number of U.S. vehicles involved is approximately 61. These
vehicles were previously involved in N232396990, but have been moved to
N232396992 due to an additional module requiring programming. Please see
the attached bulletin for details.
Customer Letter Mailing
The customer was previously notified under N232396990.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen will
be updated June 2, 2023. A Stock VIN list is not included as our records show there
are no vehicles in dealer new inventory.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS

Customer Satisfaction Program
N232396992 Super Cruise Map Enhancements
Release Date:
Attention:

June 2023

Revision:

00

This field action must only be completed by GMC EV certified dealers and repairs must be performed
by a technician who has successfully completed the required training.
For Canadian Dealers: Only GMC Dealers who have signed the GMC Electric Models Agreement and
have met all the GMC HUMMER EV-specific training, tools, and equipment requirements are eligible to
complete the repair. Any Dealer unsure of their eligibility status should immediately review with their
District Service Manager.
This program is in effect until June 30, 2025.

Make

Model
HUMMER EV

GMC

Model Year
From
To
2022
2022

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 2022 model year GMC HUMMER EV vehicles may have a condition where the Super Cruise
map is out of date.
Dealers are to replace the serial data gateway and automated driving mapping modules and reprogram
the image processing and the parking assist control modules.

Parts
Quantity
1
1

Part Name
MODULE, AUTOMATED DRIVING MAPPING
MODULE, SERIAL DATA GATEWAY

Part No.
85610354
13551131

It is estimated that only 61 involved vehicles will require parts replaced. Due to the small number of vehicles
anticipated that will need this fix and the limited initial parts availability, dealers are encouraged not to order
these parts for use as shelf stock.
Reminder: Parts may be removed from Retail Inventory Management (RIM). Dealers should review the affected parts
to confirm RIM managed status. Parts may have quantity limiters in effect.
Warranty Information
Labor
Operation
9106657*
9106658*

Description
Verified Module Software or Calibration Level: Module Is
Programmed with Same Level Software or Calibration
Replace Serial Data Gateway, Automated Driving Mapping Modules
(includes programming), Reprogram Image Processing Module and
Parking Assist Control Module with SPS

Labor
Time
0.2

Trans.
Type

Net
Item

1.7

ZFAT

N/A

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

6125814

•

The Warranty Claim Code from the programming event must be accurately entered in the “Warranty Claim
Code” field of the transaction.

Copyright 2023 General Motors. All Rights Reserved.

Page 1 of 6

Customer Satisfaction Program
N232396992 Super Cruise Map Enhancements
•

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.

Warranty Claim Code Information Retrieval

6125774

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
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 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.
•

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.

Page 2 of 6

Customer Satisfaction Program
N232396992 Super Cruise Map Enhancements
•

•
•

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 Engine Control Module (ECM) is the master module (for VIP 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 ECM also
needs to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate.
The Body Control Module (BCM) is the master module (for GEM 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

5644477

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Customer Satisfaction Program
N232396992 Super Cruise Map Enhancements
Important: Techline Connect screens shown above.
Important: If the same calibration/software warning is noted on the TLC 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.

Replace the serial data gateway module. Refer to Serial Data Gateway Module Replacement in SI.

2.

Replace the automated driving mapping module. Refer to Automated Driving Mapping Module Replacement in SI.

3.

Reprogram the image processing module. Refer to K124 Image Processing Module Reprogramming and Setup in
SI.

4.

Reprogram the parking assist control module. Refer to K182 Parking Assist Control Module: Programming and Setup
in SI.

5644478

Note: The screenshot above is 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.
5.

Record SPS Warranty Claim Code on job card for warranty transaction submission.

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.
Dealers are to service all vehicles subject to this program at no charge to customers, regardless of mileage, age of vehicle,
or ownership, through June 30, 2025. 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, whenever a vehicle subject to this program enters your vehicle inventory or is in your facility for service
through June 30, 2025, you must take the steps necessary to be sure the program correction has been made before
selling or releasing the vehicle.

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Customer Satisfaction Program
N232396992 Super Cruise Map Enhancements
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.
Customer Notification
USA & Canada - General Motors will notify customers of this program on their vehicle (see copy of customer letter included
with this bulletin).

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 5 of 6

Customer Satisfaction Program
N232396992 Super Cruise Map Enhancements
June 2023
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
Thank you for being among our first GMC HUMMER EV owners. Your HUMMER EV is already equipped with many
innovative features and technologies, and now it’s getting even better. As you know, your HUMMER EV is equipped
with the Super Cruise™ driver assistance technology and hardware. Super Cruise software updates for your HUMMER
EV are now available. These updates include the Super Cruise Road Expansion which will allow you to drive hands-free
on more than 400,000 miles of compatible roads in the U.S and Canada including non-divided highways, which is
double the amount of mileage currently available in your vehicle.
What We Will Do: Your GM dealer will replace the serial data gateway and automated driving mapping modules and
reprogram the image processing and the parking assist control modules. This service will be performed for you at no
charge until June 30, 2025. After that, any applicable warranty will apply.
What You Should Do: To limit any possible inconvenience, we recommend that you contact the HUMMER EV
Concierge or your GMC EV Certified dealership as soon as possible to schedule an appointment for this update. By
scheduling an appointment, your dealer can ensure that the necessary parts will be available on your scheduled
appointment date. When scheduling your appointment, confirm with the dealership that they are an EV certified dealer.
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
GMC HUMMER EV/SUV
Puerto Rico – English
Puerto Rico – Español
Virgin Islands

Number
1-833-HUMMER-EV
(1-833-486-6373)
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 enhance 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 GMC HUMMER EV provides
you many miles of enjoyable driving.
Neelie O’Connor
Global Executive Director
Customer Experience Operations
N232396992

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