Information on Replacement of Video Processing Module Due to Water Intrusion – 2017-2019 Buick Cadillac Chevrolet GMC

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Service Bulletin Bulletin No.: 17-NA-231
Date: December, 2020
INFORMATION
Subject: Information on Replacement of Video Processing Module Due to Water Intrusion
Brand: Model:
Model Year: VIN:
Engine: Transmission:
from to from to
Buick Enclave 2018 2019
— — All All
Cadillac XT5 2017 2019
Chevrolet Traverse 2018 2019
GMC Acadia (VIN N) 2017 2019
Involved Region or Country North America, Europe, Middle East, Cadillac Korea (South Korea), China, Colombia
Additional Options (RPOs) Equipped with 360 View Camera (RPO UVH)
Condition
During diagnosis, a technician may find that water intrusion caused a malfunction within
the Video Processing Module. This will result in a “SERVICE REAR VISION SYSTEM”
message on the center screen. The DTCs most likely to occur would be B101D (Video
Processing Module – hardware fault) and B127B (HMI – loss of rear camera).
Correction Determine the root cause of the water intrusion to the Video Processing Module (VPM)
and correct it prior to replacement of the VPM.
Possible Water Leak Paths
Note: Not all possible paths are shown.
5660052
Red Arrow shows location of VPM.
Examples of Video Processing Module
with Visible Signs of Water Damage
5653593
Page 2 December, 2020 Bulletin No.: 17-NA-231
5653594
5653595
Important: Please do NOT dismantle the VPM. If there
is suspected water damage, send the VPM back to GM
for evaluation and please ensure, before replacing the
VPM in the vehicle, all potential water routes are sealed
to prevent a repeat issue.
Service Procedure
If you encounter a vehicle with the above concern,
complete the following steps:
1. Upon confirming an issue with the VPM, remove
the VPM. Refer to Video Processing Module
Replacement in SI.
2. Inspect the VPM for any signs of water/corrosion or
areas around the VPM for signs of water.
3. Perform a water leak test/wash test on the vehicle
to determine any leak path(s).
4. If a leak path is found, seal and ensure the leak is
contained.
5. The following are areas to inspect for water
intrusion:
• Ensure the Body harness in left quarter panel to
exterior harness grommet is seated fully.
• Inspect the tail lamp assembly, grommets, and
clips.
6. Ensure the body seams are sealed.
• Left rear roof to outer body panel
• Left rear quarter window
• Tail lamp pocket seam
• Sunroof drain hose properly installed in quarter
panel
• Liftgate weatherstrip
• Liftgate wiring harness grommets
• Liftgate glass
7. Once any water entry point has been determined
and contained, replace the Video Processing
Module. Refer to Video Processing Module
Replacement in SI.
8. Before installing a new Video Processing Module,
Install 2 washers for each stud used to mount the
video processing unit.
Note: Be sure to install the washers under the video
processing unit, so that the unit is raised from the
installation of the washers.
Parts Information
Description Part
Number
Qty
Video Processing Module Refer
to EPC
1
Bulletin No.: 17-NA-231 December, 2020 Page 3
Warranty Information
For vehicles repaired under warranty, use the
appropriate labor operation for the repair procedure
performed.
Version 4
Modified Released July 17, 2017
Revised April 01, 2019 – Added the 2018 and 2019 Chevrolet Traverse and the 2018-
2019 Model Years to the XT5, Acadia.
Revised October 15, 2020 – Updated the Involved Region or Country section, Condition
and Correction sections, Added VPM location and examples of VPM water intrusion
information, updated the Service Procedure, Parts Information and changed some
formatting.
Revised November 25, 2020 — Added 2018–2019 Buick Enclave Models.

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