23-NA-108 Service Bulletin/Repair Instructions

Service Bulletin
Bulletin No.:
23-NA-108
Date:
June, 2023
TECHNICAL

Subject:
Replace Video Processing Module (VPM) When Programming Fails
Brand:
Model:
Buick
Cadillac
GMC
VIN:

to
Envision
2020
2023
CT5
2020
2021
CT6
2020
2020
2021
2023
from
to
—
—
Engine:
Transmission:
—
—
Escalade

Escalade

ESV
Chevrolet
Model Year:

from
XT4
2019
2023
Equinox
2022
2023
Suburban
2021
2023
Tahoe
2021
2023
Terrain
2022
2023
2021
2023
Yukon

Yukon XL
Involved Region or Country
North America, Brazil, Chile, Colombia, Europe, Uzbekistan, Middle East, Israel, Cadillac

Korea (South Korea), GM Korea Company, China
Condition
Technicians may find that when attempting to program the K157 Video Processing

Control Module, the following SPS2 errors may occur:

• E4492 Cyber Security Access Failure

• E4423 Unknown reprogramming error 5 at step 0
Copyright 2023 General Motors LLC. All Rights Reserved.
Page 2
June, 2023
Bulletin No.: 23-NA-108
6371277
Cause
The cause of the condition may be that some K157 Video Processing Control Modules

have an internal fault that causes SPS programming to fail.
Correction
Replace the K157 Video Processing Control Module.
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 and the

laws that apply to your dealership, you must follow

those applicable laws.

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.

• 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 12V 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.
Bulletin No.: 23-NA-108
June, 2023
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 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.
Page 3
Page 4
June, 2023
Bulletin No.: 23-NA-108
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
Bulletin No.: 23-NA-108
June, 2023
Page 5
5644477
Important: Techline Connect screen 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. Document the WCC on the job card.

No further action is required. Refer to the Warranty

Information section of this bulletin.

1. Replace the Video Processing Control Module.

Refer to Video Processing Module Replacement

in SI.

2. Reprogram the Video Processing Control Module.

Refer to K157 Video Processing Control Module:

Programming and Setup in SI.
Page 6
June, 2023
Bulletin No.: 23-NA-108
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.

3. Record the SPS Warranty Claim Code on the job

card for warranty transaction submission.
Bulletin No.: 23-NA-108
June, 2023
Warranty Information

For vehicles repaired under the Bumper-to-Bumper

coverage (Canada Base Warranty coverage), use the

following labor operation. Reference the Applicable

Warranties section of Investigate Vehicle History (IVH)

for coverage information.

Labor

Operation

3487888*
Description
Labor Time
Replace K157 Video

Processing Control Module

for Programming Errors
1.9 hrs
*This is a unique Labor Operation for bulletin use only.

Important: To avoid warranty transaction rejections,

carefully read and follow the instructions below:
6125814
•

•
The Warranty Claim Code 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.
Page 7
Page 8
June, 2023
Bulletin No.: 23-NA-108
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. Open TLC on the computer used to program the

vehicle.

2. Select and start SPS2.

3. Select Settings (1).

4. 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.

Version
1
Modified
Released June 16, 2023
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.
WE SUPPORT VOLUNTARY

TECHNICIAN

CERTIFICATION

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