23-NA-164

Bulletin No.:
Service Bulletin
Date:
23-NA-164
September, 2023
TECHNICAL
Subject:
Vehicle will lock and unlock (active functions work) but will not crank or start (loss of
passive functions do not work)
Brand:
Model:
Buick
Envision
Chevrolet
GMC
Model Year:
from
to
2019
2020
Equinox
2018
Malibu
2019
Acadia
2019
Terrain
2018
Involved Region or Country
VIN:
from
to
Engine:
Transmission:
2022
2022
North America
Additional Options (RPOs)
Condition
Some customers may comment the vehicle will lock and unlock (active functions) but the
vehicle will not crank (passive functions).
Cause
This condition may have presented immediately following a low voltage condition, jump
start, battery charging, battery replacement or battery disconnect and reconnect. This can
present a memory corruption event in the BCM causing the learned fobs count to show 0.
Copyright 2023 General Motors LLC. All Rights Reserved.
Page 2
September, 2023
Bulletin No.: 23-NA-164
Important: Do not attempt the immobilizer procedure or module replacements before
following this bulletin.
This procedure ONLY applies to the GEN3R BCM
GEN3R BCMs can be identified by either the label on the module or looking up the BMPN
part number information in GDS2.
Correction
6430397
Bulletin No.: 23-NA-164
September, 2023
Page 3
Follow the steps below to verify BMPN is a GEN3R
through GDS2.
Verify you have a GEN3R BCM Base Model Part
Number. Only GEN3R BCMS are eligible for this
bulletin. Navigate to GDS2 > Module Diagnostics > [K9]
Body Control Module > Identification Information >
Identification Information.
6430402
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September, 2023
Bulletin No.: 23-NA-164
6430401
Bulletin No.: 23-NA-164
September, 2023
Page 5
6430398
6430399
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September, 2023
Bulletin No.: 23-NA-164
6430394
BMPNs eligible for this bulletin: 13518569, 13518570,
13518602, 13518603, 13519619, 13519620,
13519648, 13527252, 13527260, 13527261,
13527297, 13527298, 13527827, 13529492,
13529493, 13533809, 13533813, 13533814,
13533817, 13533821.
If the BCM is not a GEN3R, this bulletin does not
apply. Continue with standard troubleshooting
procedures in SI.
If the BCM is GEN3R, proceed.
Service Procedure
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.
Note: You will be unable to confirm the FOB count is at
0 during this condition since you cannot power mode
the vehicle. When relearning the existing FOBs, you
will see the FOB count during the SPS Immobilizer
procedure. Ensure you have 2 FOBs learned before
completing the procedure.
1. From SPS Supported Controllers, select K9 Body
Control Module “Program Transponder or Remote
Key (Add)” using both existing FOBs. If both
existing FOBs cannot be located, make sure at
least 2 keys are learned during these steps.
Bulletin No.: 23-NA-164
September, 2023
Page 7
6430438
2. Confirm vehicle cranks and starts and all FOB
functions work properly on every FOB and that
there are no current DTCs.
Page 8
September, 2023
Bulletin No.: 23-NA-164
Parts Information
May require FOB replacements, use Electronic Parts
Catalog to determine correct part number.
Warranty Information
For vehicles repaired under the Bumper-to-Bumper
coverage (Canada Base Warranty coverage), use the
following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH)
for coverage information.
Labor Operation
Description
Labor Time
*2889818
GEN3R FOB Relearn
0.5 hr
*This is a unique Labor Operation for Bulletin use only.
Version
1
Modified
Released September 18, 2023
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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