NHTSA ID Number: 10245570
Manufacturer Communication Number: 23-NA-021
TSB/Document Date: 2023-11-29
Summary
This service bulletin advises the tech that the rotational Clicking Noise Heard After Engine Shut Down may be normal characteristics of the vehicle.
Bulletin No.:
Service Bulletin
Date:
23-NA-021
November, 2023
INFORMATION
Subject:
Information on Rotational Clicking Noise Heard After Engine Shut Down on Vehicles
Equipped with GF9 9T45/50/60/65 Transmission Assembly
This bulletin replaces PIP5623. Please discard PIP5623.
Brand:
Model:
Holden
to
VIN:
from
to
Engine:
Transmission:
(Automatic)
Enclave
2018
Encore GX
2020
Envision
2018
LaCrosse
2018
2019
M3G
Regal
2018
2020
M3D, M3T
XT4
2019
XT5
XT6
Model Year:
from
2020
M3W
2024
M3F
M3T, M3H
M3H
2024
M3W, M3G
M3W, M3G
Blazer
2019
2024
Cruze
2017
2019
M3D, M3V
—
—
—
M3D
Equinox
2018
2020
M3D
Malibu
2017
2022
M3E
Traverse
2018
2023
M3V
Trailblazer
2021
2024
M3F
Acadia
2020
2023
M3W, M3G
Terrain
2018
2024
M3H, M3U
Acadia
2019
2020
M3V
Commodore
2018
2020
M3D
Equinox
2018
2020
M3D
Involved Region or Country
North America, Argentina, Brazil, Bolivia, Chile, Colombia, Ecuador, Paraguay, Peru,
Uruguay, Europe, Russia, Uzbekistan, Middle East, Iraq, Israel, Palestine, Japan,
Cadillac
Korea (South Korea), GM Korea Company, China, Australia/New Zealand
Condition
Rotational clicking noise heard after the engine is shut off.
Cause
The Transmission Control Module (TCM) is keeping the power-mode alive in Accessory
mode for an extended period of time after the engine has been shut off and the Line
Pressure Solenoid is staying on in Dither Mode Control, when there is no fluid pressure/
pump causing the High Side Driver and Solenoid Body Assembly to buzz.
The loudness and length of time of the concern may vary per vehicle.
Copyright 2023 General Motors LLC. All Rights Reserved.
Page 2
Information
November, 2023
Bulletin No.: 23-NA-021
This is a design characteristic. No repairs should be attempted as there are no durability
concerns.
Please communicate to the customer that the TCM system is functioning as designed
and this is a normal condition of their vehicle. Please share this information with the
customer, including a copy of this bulletin.
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.
Version
2
Modified
Released February 15, 2023
Revised November 16, 2023 - Added 2024 to Applicable Models
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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TSB/Document ID: 23-NA-021
Replacement Service Bulletin Number:
MFR Communication Date: 2023-11-16
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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