NHTSA ID Number: 10237843
Manufacturer Communication Number: 23-NA-062
TSB/Document Date: 2023-06-19
Summary
This service bulletin provides repair information to correct a customer concern of Rear View Camera Issues - DTCs B395A, B395B, B395C, B101E, B101D.
3C
Warning: DO NOT
REPLACE
K157 VIDEO
PROCESSING
MODULE
Warning: DO NOT
REPLACE
K157 VIDEO
PROCESSING
MODULE
Page 4
June, 2023
Bulletin No.: 23-NA-062
(cont'd)
Symptom
Byte
Rear, Front, Right,
or Left Camera
Open Circuit Fail
Counter
>0
Module
DTCs
K157 Video
Processing Module
B390F
CHECK COAX/
CONNECTOR/
CAMERA Based on
Fail Counter
CHECK COAX/
CONNECTOR/
CAMERA Based on
Fail Counter
K157 Video
Processing Module
B395B
CHECK COAX/
CONNECTOR/
CAMERA Based on
Fail Counter
CHECK COAX/
CONNECTOR/
CAMERA Based on
Fail Counter
CHECK COAX/
CONNECTOR/
CAMERA Based on
Fail Counter
CHECK COAX/
CONNECTOR/
CAMERA Based on
Fail Counter
8
DTC Description
Video Processing
Module
Reset Counter
>20
Camera OPEN DTC
K157 Video
Processing Module
B395C
CHECK COAX/
CONNECTOR/
CAMERA Based on
Fail Counter
K157 Video
Processing Module
B395A
CHECK COAX/
CONNECTOR/
CAMERA Based on
Fail Counter
Note: Before testing the coax cable, check the cable's
exterior for being pinched, cut, damaged, or having
loose connections at the components, all of which can
cause reception issues.
6. If it’s difficult to determine the causal component,
unplug all the cameras.
A. Leave the rear camera input and video output
at VPM.
B. Activate the Rearview Camera (RVC) using the
“Cameras” touch button.
Surround Vision Components
•
•
•
•
•
•
•
•
•
•
K157 Video Processing Control Module
A11 Radio
B87 Rearview Camera
B87CA Rearview Driver Information CameraCargo Area (RPO UVN)
B225L Sideview Camera – Left
B225R Sideview Camera – Right
B174G Frontview Camera – Grille
B174W Frontview Camera – Windshield
Trailer Rearview Camera (if customer installed)
Trailer Interior Camera (if customer installed)
Additional Surround Vision System
Information
Refer to published bulletins, PIs and SI documents for
further diagnostic steps on the following issues.
Pink Colored Image Issue
Pink on the screen will be most likely an intermittent
Coax issues caused by damaged or frayed coax
cables.
Some intermittent conditions can be caused by wire
terminal fretting corrosion, which is a build-up of
insulating, oxidized wear debris that can form when
there is a small motion between electrical terminals.
6083541
C. If there is no image output, swap to the front, left, or
right cameras into VPM rear camera input and
repeat previous steps to check images again.
7. If concern(s) persist, refer to published diagnostics
in SI.
Bulletin No.: 23-NA-062
June, 2023
Page 5
Rolling Counter Issue
The Radio requires a rolling counter to ensure a video
output on the radio screen. This counter prevents a
frozen image to be displayed to the vehicle owner when
shifting into Reverse.
This rolling counter is monitored continuously to ensure
we have video signal from the rear camera. It goes from
the rear camera to the VPM and from the VPM to the
radio.
6083542
Flicker Issue
Verify P17 Info Display Module displays infotainment
system information properly. The Video Processing
module controls the buttons on the touch screen.
Confirm the buttons on the touchscreen are functioning
properly.
• If the “Cameras” Icon is greyed out and not
working. The connection issue may be between
the VPM and Radio.
• If the touch buttons are working properly, it could
be an issue with the coax cable connection from
the VPM to the Rear Vision Camera.
6083543
Note: Before testing the coax cable, check the cable's
exterior for being pinched, cut, damaged, or having
loose connections at the components, all of which can
cause reception issues.
6083545
If the rear camera or the VPM do not provide the rolling
counter, you will see the following black screen with
an icon:
6083546
The VPM does not monitor the left, right or front
cameras with a rolling counter. These camera’s will
display in black on their perspective side if there is an
issue.
Page 6
June, 2023
Bulletin No.: 23-NA-062
Parts Information
Figure below is of a right camera issue:
Use the VIN and the Electronic Parts Catalog (EPC) to
determine the proper part number for your specific
application.
Causal
Part
Description
Part
Number
X
Video Processing
Module
See EPC for
Vehicle
Specific Part
Number
1
Cable
Assembly Coax
See EPC for
Vehicle
Specific Part
Number
1
Driver Information
Camera
See EPC for
Vehicle
Specific Part
Number
1
X
X
6083547
VPM Calibration
•
•
•
If the Video Processing Control Module is not
calibrated, it will display an hour-glass icon on the
infotainment screen. Once calibration is attained,
the hourglass will automatically disappear.
The calibration is performed automatically by the
Video Processing Control Module and is needed
to have the Video Processing Control Module
learn new cameras and their positions. Please
follow the instruction in SI to assist in calibrating
the Video Processing Control Module.
The Video Processing Control Module can disable
rear camera display guidelines if it is not calibrated
adequately. Once calibration is attained, the
guidelines should return.
Warranty Information
For vehicles repaired under warranty, use:
Labor
Operation
Description
Labor Time
Replace Video Processing
Module
Use
Published
Labor
Operation
Time
3450060
Rearview Driver Information
Camera Replacement
Use
Published
Labor
Operation
Time
3450050
Rearview Driver Information
Camera Rear Closure
Coaxial Cable Replacement
Use
Published
Labor
Operation
Time
2810845
Video Processing Control
Module Reprogramming
with SPS
Use
Published
Labor
Operation
Time
3450140
Circuit Issues
•
•
An open in the backup lamp control circuit,
defective backup lamps, or incorrect/aftermarket
backup lamps may cause erratic circuit behavior,
such as unwanted voltage on a circuit when
vehicle is no longer in Reverse.
The camera image display remaining active after
the vehicle is shifted out of Reverse may indicate
possible backup lamp control circuit issues.
Qty
Version
2
Modified
Released March 31, 2023
Revised June 01, 2023 – Updated Subject, added the first Important statement under
Service Procedure and updated DTCs B101E and B101D under VPM Reset Counter in
table.
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: 23-NA-062
Replacement Service Bulletin Number:
MFR Communication Date: 2023-06-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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