21-NA-005

Service Bulletin
Bulletin No.:
21-NA-005
Date:
July, 2023
TECHNICAL
Subject:
Service Safety Restraint Message Displayed on the Driver Information Center (DIC),
Airbag Malfunction Warning and Airbag Malfunction Indicator Lamp (MIL) Illuminated DTC B0001-1B and/or B0002-1B Set or B0012-OD and/or B0013-OD Set
Brand:
Model:
Cadillac
Escalade Models
Blazer
Model Year:
from
to
2020
2023
Chevrolet
Silverado 1500 2WD New
(RPO J22, VIN
Digit 5 = A/D)
2022
Silverado
2500HD/3500HD
2024
2020
Tahoe
GMC
2023
Acadia
2023
Sierra 1500
2021
Sierra 1500 - 2WD
New (RPO J22,
VIN Digit 5 = H/U)
2022
Sierra 1500
Sierra
2500HD/3500HD
Yukon Models
Copyright 2023 General Motors LLC. All Rights Reserved.
Engine:
Transmission:
All
All
2022
2023
Sierra 1500 - 2WD
Limited (RPO J21,
VIN Digit 5 = 8/9)
to
2021
Silverado 1500
Suburban
from
2023
Silverado 1500
Silverado 1500 2WD LTD
(RPO J21, VIN
Digit 5 = W/Y)
Breakpoint:
2022
2023
2020
2024
2023
Page 2
July, 2023
Bulletin No.: 21-NA-005
Involved Region or Country
United States, Canada, Mexico, Middle East, Israel, Australia, New Zealand, Thailand, S.
Korea, Japan, Palestine, Russia, Uzbekistan, Chile, Columbia, Ecuador, Paraguay, Peru
and Uruguay.
Condition
Some customers may comment on one or more of the following conditions:
• Service Safety Restraint Message displayed on the DIC
• Airbag malfunction indicator illuminated
During diagnosis, a technician may find DTC B0001-1B and/or B0002-1B set or B0012OD and/or B0013-OD set (depends on the vehicle model).
Cause
5704083
Cause of condition may be rust particles, or other contaminants trapped within
connection terminal interface causing excessive resistance seen in the airbag loops.
Correction
In order to correct the condition, the following steps in the Service Procedure below must
be followed to ensure proper root cause.
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.
Service Procedure
1. Use a MDI tool and plug it into the (ADL) to show a
profile of the resistances.
Bulletin No.: 21-NA-005
July, 2023
Page 3
5972189
2. Move the airbag cover both up and down, as well
as left to right, to confirm if resistance spikes are
observed:
– If resistance spikes are seen. Replace the
steering wheel airbag and steering wheel
harness. Refer to Steering Wheel Airbag
Replacement in SI.
– If resistance spikes are not seen (resistance is
stable).
• Move to Step 3.
3. Rotate steering wheel from lock to lock position to
confirm if resistance spikes are observed:
– A) — First time around, if resistance spikes
occur, Pull airbag out and ensure all connections
are fully seated and CPA is engaged. (i.e. Airbag
connectors and yellow clock-spring connector)
– If all connectors are not fully seated, re-seat
connectors and repeat beginning of step 3 and
skip 3A.
– B) — Disconnect and reconnect the airbag, then
repeat lock to lock steering wheel rotation test.
– If resistance spikes go away (resistance is
stable), replace airbag and steering wheel
harness.
Parts Information
Use the VIN and refer to the GM Electronic Parts
Catalog (EPC) to determine the proper part number to
order.
Page 4
July, 2023
Bulletin No.: 21-NA-005
Labor Operation
Description
Labor Time
6450380
Steering Wheel Airbag and Harness Replacement
Use the Published Labor
Operations Time
Warranty Information
For vehicles repaired under warranty, use:
Version
5
Modified
Released March 18, 2021
Revised August 13, 2021 — Update Breakpoints and diagnosis procedure and Regions.
Revised December 13, 2021 – Added 2020 – 2021 Blazer and Acadia.
Revised February 21, 2022 - Update Subject, Service Procedure section and Warranty
Information section.
Revised June 29, 2023 - Added 2023 and 2024 to the Applicable vehicles.
Additional SI Keywords: rust, SIR
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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