GENERAL MOTORS
DCS6866
URGENT - DISTRIBUTE IMMEDIATELY
Date:

April 24, 2024

Subject: N232413430 - Customer Satisfaction Program
Oversized Lifter Bores
Models: 2023 Cadillac Escalade
2023 Cadillac Escalade ESV
2023 Chevrolet Suburban
2023 Chevrolet Tahoe
2023 Chevrolet Silverado 1500 New
2023 GMC Yukon
2023 GMC Yukon XL
2023 GMC Sierra 1500 New
Equipped with ENGINE-GAS, 8 CYL, V8, 6.2L, DI, DFM, ALUM, GEN
5 (RPO L87)
General Motors is releasing Customer Satisfaction Program N232413430
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.
The Stock VIN list of vehicles in dealer inventory is attached to this message.
Note: this list is only accurate at the time of report creation and all VINs should
be validated in IVH prior to repair.

END OF MESSAGE

Customer Satisfaction Program
N232413430 Oversized Lifter Bores
Release Date:
Attention:

Make
Cadillac
Cadillac
Chevrolet
Chevrolet
Chevrolet
GMC
GMC
GMC

April 2024

Revision:

00

This program is in effect until May 31, 2026.

Model
Escalade
Escalade ESV
Suburban
Tahoe
Silverado 1500 New
Yukon
Yukon XL
Sierra 1500 New

Model Year
From
To

RPO

Description

2023

L87

ENGINE-GAS, 8 CYL, V8, 6.2L,
DI, DFM, ALUM, GEN 5

2023

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 model year vehicles listed above, equipped with ENGINE-GAS, 8 CYL, V8, 6.2L, DI, DFM,
ALUM, GEN 5 (RPO L87), may have a condition in which the engine lifter bores may be oversized.
Dealers are to replace the engine.

Parts
Quantity
1
1
1
2
10
8
1
1
2
1
1
1
2
2
2
1
1
2

Part Name
L87 - 6.2L V8 Gas Engine
PIPE,FUEL FEED INTER
GASKET,F/PMP BRKT
GASKET, EXH MANIFOLD
BOLT, EXH MANIFOLD
GASKET,INT MANIFOLD
SEAL,OIL LVL IND TUBE
PIPE,FUEL FEED INTER
SEAL KIT,F/INJR (O RING)
BELT,A/C CMPR
BELT,ACSRY DRV PRIM
GASKET,ENG OIL CLR
SEAL,A/C CMPR&CNDSR HOSE
RETAINER,ENG OIL CLR
GASKET, W/PMP
SEAL, EXH SYS
SEAL EXH SYS
COOLANT, ENG

8

OIL, ENG

6
2

Engine Mount Frame Side Bolt
Transmission Fluid Cooler Pipe Fitting Seal**

Part No.
12716401
12679463
12679867
12657093
11546600
12626354
24504031
12703668
12726902
12658178
12669858
23129010
13579648
22988272
12682391
15035747
15077362
12346290
(US)
10953464
(CA)
19432331
(US)
19432456
(CA)
Obtain locally
in compliance
w/ GM spec
GMW18144
(all other
countries)
11549180
85639955

**Tahoe/Suburban/Yukon/Yukon XL/Escalade/Escalade ESV ONLY
Copyright 2024 General Motors. All Rights Reserved.

Page 1 of 4

Customer Satisfaction Program
N232413430 Oversized Lifter Bores
Parts will be removed from SPRINT and are non returnable. Please only order for applicable VINs and not shelf stock.
The engine required to complete this recall are to be obtained from General Motors Customer Care and Aftersales
(GMCCA). The engine on this bulletin is on an Order Writing control and all DRO’s (Daily Replenishment Orders) will
cancel. Dealers should place engine orders CSO (Customer Special Order) and upgrade to SPAC with a VIN. All
orders will be reviewed prior to being filled. All CSO’s will be cancelled daily. Only SPAC orders with a valid
VIN associated with the vehicle engine listing will be released. Due to limited parts availability, parts may have
quantity limiters in effect.
Warranty Information
Labor
Operation
9106983

Description
Replace the Engine – Silverado/Sierra ONLY
Replace the Engine – Tahoe/Suburban ONLY
Replace the Engine – Yukon/Yukon XL ONLY
Replace the Engine – Escalade/Escalade ESV ONLY

Labor
Time
19.8
19.4
19.8
19.6

Trans.
Type
ZFAT

Net
Item
N/A

Service Procedure
Replace the Engine. Refer to Engine Replacement in SI based upon your vehicle make, model, and RPO.
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.

Page 2 of 4

Customer Satisfaction Program
N232413430 Oversized Lifter Bores
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
N232413430 Oversized Lifter Bores
May 2024
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We have learned that your 2023 model year Cadillac Escalade, Cadillac Escalade ESV, Chevrolet Suburban, Chevrolet
Tahoe, Chevrolet Silverado 1500 New, GMC Yukon, GMC Yukon XL or GMC Sierra 1500 New, may have a condition in
which the engine lifter bores may be oversized.
Your satisfaction with your Escalade, Escalade ESV, Suburban, Tahoe, Silverado 1500 New, Yukon, Yukon XL or
Sierra 1500 New 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
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
Cadillac
Chevrolet
GMC
Puerto Rico – English
Puerto Rico – Español
Virgin Islands

Number
1-800-333-4223
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
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
N232413430

Page 4 of 4