Customer Satisfaction Program
N232427750 Piston Oil Lubrication Valve
Release Date:
Attention:

May 2024

Revision:

00

This program is in effect until June 30, 2026.

Make
Chevrolet

Model
Silverado 2500HD/3500HD

GMC

Sierra 2500HD/3500HD

Model Year
From
To

RPO

2024

L5P

2024

Description
ENGINE-DIESEL, 8 CYL, 6.6L,
DI, V8, TURBO, DURAMAX,
GEN 5, VAR. 1

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 2024 model year Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD
vehicles may have a condition where the piston oil lubrication valve may not open at the appropriate
pressure.
Dealers are to replace the engine.

Parts
Quantity
1
1
2
16
1
1
8
2
6
1
2
1
4
1
1
1
1
1
12
2
2
1
8
8
4
4
1
1
1
4
1
1
1
1
2
2
1
3
1

Part Name
A/C Compressor Hose Seal
A/C Compressor Hose Seal
A/C Evaporator Seal
Camshaft Cover Washer
Catalytic Converter Clamp Assembly
Catalytic Converter Gasket
Fuel Injector Seal
Coolant Thermostat Housing Seal
Engine Mount Bolt
EGR Feed Pipe Seal
EGR Gasket
EGR Pipe Gasket
EGR Pipe Gasket
EGR Valve Gasket
Exhaust Pipe Clamp Assembly
Exhaust System Front Gasket
Exhaust System Front Gasket
Exhaust System Seal
Exhaust Turbo Inlet Pipe Bolt
Exhaust Turbo Inlet Pipe Gasket
Exhaust Turbo Inlet Pipe Gasket
Fuel Injector Pump Bracket Seal
Fuel Injector Bracket Bolt
Fuel Injector O Ring Seal
High Pressure Fuel Feed Pipe
High Pressure Fuel Feed Pipe
High Pressure Fuel Feed Pipe to Rail
High Pressure Fuel Feed Pipe to Rail
Dipstick O-Ring Seal
PCV Seal
PCV Oil Separator Kit
PCV Tube Gasket
Thermal Bypass Pipe Gasket
Thermal Bypass Pipe O-Ring
Trans Fluid Cooler Seal
Trans Fluid Cooler Retainer
Turbo Air Inlet Adapter Seal
Turbo Oil Feed Pipe Gasket
Turbo Gasket

Copyright 2024 General Motors. All Rights Reserved.

Part No.
13418809
13418808
13418807
12654651
12683878
12672821
12664576
12643149
11603876
12648140
12737098
12688014
12680216
12677819
12683493
12672822
12671767
84013962
11603556
12688018
12688019
12638504
11611340
12686813
12685923
12685924
12685931
12707344
12676951
11611966
12714574
12671847
12737097
12658352
85630657
88996648
12651147
12691866
12700564
Page 1 of 4

Customer Satisfaction Program
N232427750 Piston Oil Lubrication Valve
1
2
2
1
1
2
10

Turbo Oil Feed Pipe Gasket
Turbo Oil Feed Pipe Gasket
Turbo Coolant Gasket
Turbo Oil Return Pipe Gasket
Turbo Oil Return Pipe Gasket
Upper Inlet Manifold Seal
Engine Oil

4

Coolant

1

Automatic Transmission Fluid

2
2

Trans Fluid Cooler Seal
EGR Valve Bolt

12691866
12662187
12662184
12737099
12737100
12642410
88864038 US
88865797 CAN
12346290 US
10953464 CAN
19352619 US
19352620 CAN
24279121
11603556

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.
Warranty Information
Labor
Operation
9107320

Description
Engine Replacement (Includes time to Recover & Recharge A/C)

Labor
Time
24.5

Trans.
Type
ZFAT

Net
Item
N/A

Service Procedure
Replace the engine. Refer to Engine Replacement in SI.
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 June 30, 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 June 30, 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.
Page 2 of 4

Customer Satisfaction Program
N232427750 Piston Oil Lubrication Valve
Customer Notification
USA & Canada - General Motors will notify customers of this program on their vehicle (see copy of customer letter included
with this bulletin).

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
N232427750 Piston Oil Lubrication Valve
June 2024
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We have learned that your 2024 model year Chevrolet Silverado 2500HD/3500HD or GMC Sierra 2500HD/3500HD
may have a condition where the piston oil lubrication valve may not open at the appropriate pressure.
Your satisfaction with your Silverado 2500HD/3500HD or Sierra 2500HD/3500HD 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 replace the engine. This service will be performed for you at no charge until
June 30, 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
GMC
Puerto Rico – English
Puerto Rico – Español
Virgin Islands

Number
1-800-222-1020
1-800-462-8782
1-866-467-9700
1-866-467-9700
1-866-467-9700

Text Telephones (TTY)
711 / 1-800-833-2438
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 GM vehicle provides you many
miles of enjoyable driving.
Neelie O’Connor
Global Executive Director
Customer Experience Operations
N232427750

Page 4 of 4

GENERAL MOTORS
DCS6897
URGENT - DISTRIBUTE IMMEDIATELY
Date:

May 16, 2024

Subject: N232427750 - Customer Satisfaction Program
Piston Oil Lubrication Valve
Models: 2024 Chevrolet Silverado 2500HD/3500HD
2024 GMC Sierra 2500HD/3500HD
Equipped with 6.6L Diesel Engine (RPO L5P)
General Motors is releasing Customer Satisfaction Program N232427750
today.
What Should Dealers Do: 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