20-NA-130

Bulletin No.:
Service Bulletin
Date:
20-NA-130
January, 2023
INFORMATION
Subject:
Information on Message Illuminated in DIC, DTC B094C (39) Set
Brand:
Model:
Chevrolet
Bolt EV
Model Year:
VIN:
from
to
from
to
2019
2020
—
—
Engine:
Transmission:
All
All
Involved Region or Country
North America, Europe, Middle East, GM Korea Company
Condition
Some customers may comment on a message illuminated in the driver information
center (DIC).
A technician may find DTC B094C (39) - Right Side Driver Assistance Systems set.
Cause
Correction
Copyright 2023 General Motors LLC. All Rights Reserved.
Note: Check the LED operation to try and help isolate the Condition to the driver or
passenger mirror.
The cause of the condition may be corrosion in the LED wiring harness connection in the
left or right outside rearview mirror.
Upon verifying the condition, follow the appropriate direction and steps in the Service
Procedure below.
Page 2
January, 2023
Bulletin No.: 20-NA-130
Service Procedure
4533897
1. Remove the affected outside rearview mirror
housing bezel (2). Refer to Outside Rearview
Mirror Housing Bezel Replacement in SI.
Bulletin No.: 20-NA-130
January, 2023
Page 3
4811651
2. Inspect the LED circuit in the mirror for corrosion.
Refer to Rear Cross Traffic Alert (UFG) and Side
Object Detection (UKC) (Document ID #4817118)
in SI.
• If any corrosion IS found, it will be necessary to
replace the mirror assembly. Refer to Outside
Rearview Mirror Replacement in SI.
• If NO corrosion is found, reinstall the mirror and
follow the DTC B094C (39) diagnostics
referenced in SI.
Page 4
January, 2023
Bulletin No.: 20-NA-130
Parts Information
Use the VIN and refer to the GM Electronic Parts
Catalog (EPC) to determine the proper part to order.
Causal Part
Description
Part Number
Qty
42690694 (Rt. Hand)
42553500 (Rt. Hand)
42779315 (Rt. Hand)
42779313 (Rt. Hand)
42690697 (Rt. Hand)
42690696 (Rt. Hand)
X
MIRROR ASM-O/S RR VIEW
42736385 (Rt. Hand)
42736384 (Lt. Hand)
1
42690693 (Rt. Hand)
42553501 (Lt. Hand)
42779314 (Lt. Hand)
42779312 (Lt. Hand)
42690698 (Lt. Hand)
42690695 (Lt. Hand)
Warranty Information
For vehicles repaired under warranty, use:
Labor
Operation
2050220
Description
Labor Time
Outside Rearview Mirror
Replacement
Use
Published
Labor
Operation
Time
Version
2
Modified
Released July 15, 2020
Revised January 20, 2023 – Updated the Cause, Service Procedure and Parts
Information to note Condition could affect the driver or passenger side mirror.
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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