GENERAL MOTORS
DCS6857
URGENT - DISTRIBUTE IMMEDIATELY
Date:

April 22, 2024

Subject: N232427050 - Customer Satisfaction Program
Transmission Fasteners Improperly Torqued
Models: 2023-2024 Chevrolet Corvette

General Motors is releasing Customer Satisfaction Program N232427050
today.
What Should Dealers Do: Dealers should review IVH or the Dealer Maxis
reports for open VINs in their inventory. Dealers can view the attached
bulletin and it will also be displayed in Service Information tomorrow.
A Stock VIN list is not included as our records show there are no vehicles in
dealer new inventory.

END OF MESSAGE

Customer Satisfaction Program
N232427050 Transmission Fasteners Improperly Torqued
Release Date:
Attention:

April 2024

Revision:

00

This program is in effect until May 31, 2026.

Make
Chevrolet

Model
Corvette

Model Year
From
To
2023
2024

RPO

Description

Involved vehicles are marked “Open” on the Investigate Vehicle History screen in GM Global Warranty Management
system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections
and/or repairs.
Condition
Correction

Certain 2023-2024 model year Chevrolet Corvette vehicles, may have a condition in which the
transmission fasteners were improperly torqued.
Dealers will retorque the transmission fasteners.

Parts
Quantity
1
1
1
1
13
17

Part Name
Transmission Fluid Filter Assembly
Control Valve Body Gasket
Automatic Transmission Fluid Pan Gasket
Automatic Transmission Fluid Filter
Automatic Transmission Fluid
MCV Cover Bolts

Part No.
24045729
24299343
24048642
24047742
19418016
24045737

IMPORTANT: Only order parts necessary for the repair associated with your VIN according to the charts below.
Note: Use the VIN and the GM Electronic Parts Catalog (EPC) to determine which parts to order for the repair designated
for your VIN in the service procedure.
Reminder: Parts may be removed from SPRINT and Retail Inventory Management (RIM) and be non-returnable.
Dealers should review the affected parts to confirm RIM managed status. Parts may have quantity limiters in effect.
Due to the limited initial parts availability, dealers are encouraged not to order these parts for use as shelf
stock.
Warranty Information
Labor
Operation
9107290

9107291
9107292

Description
Remove and Retorque Main Control Valve Body (MCV)
M1L
M1M
Remove and Retorque MCV Cover
Retorque Trans Filter Bolt

Labor
Time
3.2
4.6
3.1
0.4

Trans.
Type
ZFAT

Net
Item
N/A

ZFAT
ZFAT

N/A
N/A

Service Procedure
1.

Refer to the charts above each procedure to determine which repair your VIN requires and proceed to the
appropriate section of the procedure.

Retorque MCV
1G1YB2D41R5103023
1G1YA2D4XP5125666
1G1YB2D41P5138254
1G1YB2D44P5123876
1G1YC2D42P5123937
1G1YC2D48R5100973
1G1Y92D4XP5125093
1G1YC2D48P5125532
1G1YA2D43P5124004

Copyright 2024 General Motors. All Rights Reserved.

Page 1 of 4

Customer Satisfaction Program
N232427050 Transmission Fasteners Improperly Torqued

Retorque Main Control Valve Body
1.

Remove and reinstall (do not replace) the Main Control Valve Body. Refer to Control Valve Body Replacement
(Main) in SI.

Retorque MCV Cover
1G1YC3D42P5127797
1G1YB2D41P5115900
1G1YB2D42P5135847
1G1YB2D46P5135141
1G1YB3D4XP5134600
1G1YA2D40P5138801
1G1YC2D41P5136016
1G1YB2D41P5136004
1G1YB2D49P5135019

Retorque MCV Cover
1G1YB3D41R5100905
1G1YB3D4XP5134872
1G1YA3D45P5114547
1G1YB2D47P5139988
1G1YB3D48P5122669
1G1YC2D40P5504105
1G1YA2D45P5121461
1G1YB2D48P5130359
1G1YB3D42P5130508

Retorque Main Control Valve Body Cover
1.

Remove and reinstall (do not replace) the Automatic Transmission Fluid Pan (you may replace the transmission
fluid filter). Refer to Automatic Transmission Fluid, Fluid Pan and/or Filter Replacement by your vehicle’s
applicable RPOs in SI.

Retorque Trans Filter Bolt
1G1YA2D48P5135175
1G1YD2D31P5601379
Retorque Transmission Filter Bolt
1.

Remove the driver’s side rear wheel. Refer to Tire and Wheel Removal and Installation in SI.

2.

Going through the center of the rear wheel liner, torque the circled bolts to the specifications below.
• For (1), torque the bolt to 6.5 N-m (58 lb in)
• For (2), first loosen the bolt. Then, retorque the bolt to 4.1N-m (36 lb-in) on the first pass, followed by
100 degrees on the final pass.
Reinstall the driver’s side rear wheel. Refer to Tire and Wheel Removal and Installation in SI

6576543

3.

Page 2 of 4

Customer Satisfaction Program
N232427050 Transmission Fasteners Improperly Torqued
Dealer Responsibility
All new, used, GM Certified Pre-Owned (CPO), courtesy transportation vehicles, dealer shuttle vehicles, CarBravo, etc.
in dealers' possession and subject to this field action must be held and inspected/repaired per the service procedure of
this bulletin before customers take possession of these vehicles. Involved vehicles must be held and not delivered to
customers, dealer-traded, released to auction, used for demonstration, or any other purpose.
All GM Certified Pre-Owned (CPO) vehicles currently in the dealers’ inventory within the SHIFT Digital system will be
de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting an accepted/paid
warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified for sale within
the SHIFT Digital system, or once again be used in the Courtesy Transportation Program.
Dealers are to service all vehicles subject to this program at no charge to customers, regardless of mileage, age of vehicle,
or ownership, through May 31, 2026. Customers who have recently purchased vehicles sold from your vehicle inventory,
and for which there is no customer information indicated on the involved vehicle listing, are to be contacted by the dealer.
Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. A
copy of the customer letter is provided in this bulletin for your use in contacting customers. Program follow-up cards
should not be used for this purpose, since the customer may not as yet have received the notification letter.
In summary, whenever a vehicle subject to this program enters your vehicle inventory or is in your facility for service
through May 31, 2026, you must take the steps necessary to be sure the program correction has been made before
selling or releasing the vehicle.
Dealer Reports – For USA & Export
For dealers with involved vehicles, a listing has been prepared and will be available through GM GlobalConnect Maxis
Field Action Reports or sent directly to export dealers. The Inventory tab of the dealer reports will contain VINs that
apply to this field action. This information is intended to assist dealers with the PROMPT COMPLETION of these
vehicles. The Customer In-Service tab will contain customer names and addresses from Motor Vehicle Registration
Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete
this field action may be a violation of law in several states.
Courtesy Transportation – For USA & Canada
Courtesy transportation is available for customers whose vehicles are involved in a product program and still within the
warranty coverage period. See General Motors Service Policies and Procedures Manual for courtesy transportation
program details.
Customer Notification
USA & Canada - General Motors will notify customers of this program on their vehicle (see copy of customer letter included
with this bulletin).
Export - Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor
Vehicle Safety Act. For owners outside these areas, dealers should notify customers using the attached sample letter.

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 tools, equipment, 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 dealer for information on whether your
vehicle may benefit from the information.

We Support
Voluntary Technician
Certification

Page 3 of 4

Customer Satisfaction Program
N232427050 Transmission Fasteners Improperly Torqued
May 2024
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We have learned that your 2023-2024 model year Chevrolet Corvette may have a condition in which the transmission
fasteners were improperly torqued.
Your satisfaction with your Corvette is very important to us, so we are announcing a program to prevent this condition
or, if it has occurred, to fix it.
What We Will Do: Your GM dealer will retorque the transmission fasteners. This service will be performed for you at
no charge until May 31, 2026. After that, any applicable warranty will apply.
What You Should Do: To limit any possible inconvenience, we recommend that you contact your dealer as soon as
possible to schedule an appointment for this repair. By scheduling an appointment, your dealer can ensure that the
necessary parts will be available on your scheduled appointment date.
If you have any questions or concerns that your dealer is unable to resolve, please contact the appropriate Customer
Assistance Center at the number listed below.
For the hearing or speech impaired, please contact our Customer Assistance Center using the Telecommunication
Relay Service by dialing 711 then providing the appropriate Customer Assistance Center number for your vehicle.
Division
Chevrolet
Puerto Rico – English
Puerto Rico – Español
Virgin Islands

Number
1-800-222-1020
1-866-467-9700
1-866-467-9700
1-866-467-9700

Text Telephones (TTY)
711 / 1-800-833-2438

We truly appreciate you taking the time to remedy your vehicle as we know your time is valuable. We want you to know
that we will do our best, throughout your ownership experience, to ensure that your Corvette vehicle provides you many
miles of enjoyable driving.
Neelie O’Connor
Global Executive Director
Customer Experience Operations
N232427050

Page 4 of 4