NHTSA ID Number: 10216358
Manufacturer Communication Number: PIT5921
This Preliminary information communicates diagnostics aids for rear view camera issues that may be encountered.
Some customers may comment on seeing a black screen and a triangle icon on the radio display when in reverse.
Technicians may find one or more of the following DTC’s B395A, B395B, B395C, B101E, B101D
Note: Radios with infotainment version 3.4 will display blue screen compared to the black screen from version 3.5 onward.
- Condition may be related to a camera, coaxial cable, or connector due to vibrations that are higher than the components can withstand which can cause failure.
- The coaxial cable connectors to the cable may have excessive resistance that interrupts the video signal and causes the black screen.
- SD Card can cause the surround view system to undergo resets resulting in intermittent black screens.
69 Affected Products
1 Associated Document
Bulletin No.: PIT5921
Published date: 06/9/2022
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- osasumwen, asoro (Author)
- English (Publication Language)
- 306 Pages - 06/03/2020 (Publication Date) - Independently published (Publisher)
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Bulletin No.: PIT5921 Published date: 06/9/2022 Preliminary Information PIT5921 Rear View Camera Coaxial Related Issues-B395A – B395B – B395C – B101E – B101D Product Investigation Review Required Models Buick Buick Buick Buick Brand: Enclave Encore GX LaCrosse Velite Model: Model Years: 2020 – 2022 2020 – 2022 2019 – 2022 2021 – 2022 VIN: from to All All All All All All All All All All All All Engine: All All All All Transmissions: Cadillac Cadillac Cadillac Cadillac Chevrolet Chevrolet Chevrolet Chevrolet Chevrolet Chevrolet Chevrolet GMC GMC GMC GMC CT6 XT4 XT5 XT6 Blazer Bolt EV Bolt EUV Equinox Silverado 1500 Silverado HD 2500/3500 Traverse Acadia Sierra 1500 Sierra HD 2500/3500 Terrain 2019 – 2022 2019 – 2022 2020 – 2022 2020 – 2022 2019 – 2022 2019 – 2022 2022 2019 – 2022 2019 – 2022 2020 – 2022 2020 – 2022 2019 – 2022 2019 – 2022 2020 – 2022 2019 – 2022 All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All All Involved Region or Country Additional Options (RPO) North America Surround Camera System UV2 or UVS, or Trailer Camera System UVI mment on seeing a black screen and a triangle icon on the radio display when in reverse. Condition Technicians may find one or more of the following DTC’s B395A, B395B, B395C, B101E, B101D Note: Radios with infotainment version 3.4 will display blue screen compared to the black screen from version 3.5 onward. Cause Possible Causes: Condition may be related to a camera, coaxial cable, or connector due to vibrations that are higher than the components can withstand which can cause failure. The coaxial cable connectors to the cable may have excessive resistance that interrupts the video signal and causes the black screen. SD Card can cause the surround view system to undergo resets resulting in intermittent black screens. Correction: Verify the condition by using the K157 Video Processing Module (VPM) Fail counters in GDS2 and cross reference stored DTC’s with the trouble shooting table below to determine most probable cause. Preliminary Service Procedure Water Intrusion Some customers may comment on a blue or black screen with Service Rear Vision System message when shifting into Reverse. (Truck Only, Model Year 2019 to 2020). Refer to Service Bulletin# 18-NA-383 for additional steps and how to identify if this is a water intrusion issue. VPM SPS Programming If the A11 Radio has all three history DTC B395A Symptom Bytes 08, 72, and 3A, then refer to Service Bulletin # 19-NA-076: Blue or Black Screen and Service Rear Vision System Message on Radio Display Shifting into Reverse. Reprogramming the VPM software may reduce sensitivity of the B101D setting. Connection Issues Continue to procedure below if Diagnostic Trouble Codes (DTC) B395A, B395B, B395C, B101E, B101D are found in the K157 Video Processing Module Service Procedure The intent of this PI is to show that in most cases DTC B101E or B101D should NOT result in the replacement of the Video Processing Module (VPM) or the Radio, but instead inspect for coax and connector issues as well as the SD Card to ensure it is not corrupt. These counters are listed in priority order from most usefulness to least. The ones outlined in red are considered the most critical and usually most helpful in root causing surround viewing issues. Note: The VPM fail counters are not available on VIP architecture vehicles currently. 1. Connect the scan tool to the vehicle’s data link connector and open GDS2 in the Techline Connect application and write down all DTCs stored in the vehicle. 2. Navigate to the VPM Module to observe the Fail Counters: Module Diagnostics / K157 Video Processing Module / Video Processing Module Internal Status. 3. The three most critical parameters to look at are: a. Camera Communication Fail Counter b. Video Processing Module Reset Counter c. Camera Open Circuit Counter 4. Write down the counters found in the VPM using the scan tool. 5. Cross-reference the DTC’s and counters with the trouble shooting table below to determine most probable cause. Module A11 Radio A11 Radio K157 Video Processing Module K157 Video Processing DTC’s B395A B395A B101E B101D Symptom Byte 08 72 4A 3C DTC Description Loss of Video Frames Froze Frames Checksum Error Internal Communication Video Processing Module Reset Counter >20 – – CHECK SD CARD / REPLACE K157 VIDEO PROCESSING MODULE CHECK Rear, Front, Right, or Left Camer Open Circuit Fail Counter >0 CHECK COAX/CONNECTOR/CAMERA Based on Fail Counter CHECK COAX/CONNECTOR/CAMERA Based on Fail Counter DO NOT REPLACE K157 VIDEO PROCESSING MODU DO NOT REPLACE Module K157 Video Processing Module K157 Video Processing Module K157 Video Processing Module K157 Video Processing Module B390F B395B B395C B395A Failure Camera 08 OPEN DTC SD CARD / REPLACE K157 VIDEO PROCESSING MODULE 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 K157 VIDEO PROCESSING MODU 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 6. If the condition continues, power cycle the K157 Video Processing Module to see if the issue goes away. 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. 7. 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. 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. 8. If concern(s) persist, refer to published diagnostics in SI. Surround Vision Components K157 Video Processing Control Module A11 Radio B87 Rearview Camera B87CA Rearview Driver Information Camera- Cargo 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 Issues Refer to published bulletins, PIs and SISI 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. 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. 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. 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. If the rear camera or the VPM do not provide the rolling counter, you will see the following black screen with an icon: 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. Figure below is of a right camera issue: 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. 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. Version History Version 1 Created 06/08/2022 – Created on. © 2022 General Motors. All Rights Reserved.