GLOBAL SAFETY FIELD INVESTIGATIONS
DCS5833
URGENT - DISTRIBUTE IMMEDIATELY
Date:

June 22, 2021

Subject: N212326940 - Customer Satisfaction
Engine Oil Cooler Lines Detaching from Crimp
Models: 2019 Chevrolet Silverado 1500 (New Model)
2019 GMC Sierra 1500 (New Model)
To:

All General Motors Dealers

General Motors is releasing Customer Satisfaction Program N212326940
today. The total number of U.S. vehicles involved is 530. Please see the
attached bulletin for details.
Customer Letter Mailing
The customer letter mailing will begin in July 2021.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen will
be updated June 23, 2021 or sooner. Please hold all warranty transactions until IVH
has been updated.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS

Customer Satisfaction Program
N212326940 Engine Oil Cooler Lines Detaching from Crimp
Release Date:
Attention:

June 2021

Revision:

00

This program is in effect until July 31, 2023.

Make
Chevrolet
GMC

Model
Silverado 1500 (New Model)
Sierra 1500 (New Model)

Model Year
From
To
2019
2019
2019
2019

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 2019 model year Chevrolet Silverado 1500 (New Model) and GMC Sierra 1500 (New Model)
vehicles, may have a condition in which the engine oil cooler (EOC) lines may leak and detach from the
crimp joints. Exposure to cold temperature may also aggravate this condition. If the EOC lines leak,
there may be an oil leak on the ground and if the EOC lines detach while operating the vehicle, there
will be an immediate decrease in oil pressure. This will coincide with a warning on the driver
information center display (“Oil Pressure Low Turn Vehicle Off”), along with warning chimes. If the
customer continues to operate the vehicle, a loss of propulsion is possible.
Dealers are to replace the engine oil cooler lines, oil, oil filter and refill the coolant.

Parts
Quantity
1
1
4

Part Name

Part No.
84761009
84975141
12346290
(US)
10953464
(CA)
12685373
12707246
19352900
(US)
19420152
(CA)
88865926
(US)
19420162
(CA)

Engine Oil Cooler Lines (V8)
Engine Oil Cooler Lines (V6)
Coolant

1
1
8

Gasket
Engine Oil Filter
Engine Oil (V8)

6

Engine Oil (V6)

Reminder: Parts may be removed from Retail Inventory Management (RIM). Dealers should review the affected parts
to confirm RIM managed status. Parts may have quantity limiters in effect.
Warranty Information
Labor
Operation
9105724
9105725
9105726

Description
Engine Oil Cooler Hose Replacement (Includes oil change)
Customer Reimbursement Approved
- For USA and Canada dealers only
Customer Reimbursement Denied – For USA dealers only

Labor
Time
2.0
N/A
N/A

Trans.
Type
ZFAT
ZFAT

Net
Item
N/A
*

ZFAT

**

Note: To avoid having to “H” route the customer reimbursement transaction for wholesale approval, it must be submitted
prior to the repair transaction.
* For USA and Canada: Submit the dollar amount reimbursed to the customer in Net/Reimbursement. Submit $20.00
administrative allowance in Net/Admin Allowance.
** Submit $10.00 administrative allowance in Net/Admin Allowance.

Copyright 2021 General Motors. All Rights Reserved.

Page 1 of 3

Customer Satisfaction Program
N212326940 Engine Oil Cooler Lines Detaching from Crimp
Service Procedure
Replace the Engine Oil Cooler Hoses. Refer to Engine Oil Cooler Hose Replacement (L82, L84, L87) or Engine Oil Cooler
Hose Replacement (LV3) in SI.
•

While replacing the engine oil cooler hoses, change the oil and oil filter. Refer to Engine Oil and Oil Filter
Replacement in SI.

Dealer Responsibility
All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers' possession
and subject to this program 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, dealertraded, released to auction, used for demonstration, or any other purpose.
All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System
(CPOIS) 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 CPOIS system, or once again be used in the CTP 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 July 31, 2023. 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, through July 31, 2023, whenever a vehicle subject to this field action enters your vehicle inventory you must
take the steps necessary to ensure the program correction has been made before selling the vehicle. In addition, for
vehicles entering your facility for service, you are required to ensure the customer is aware of the open field action and
make every reasonable effort to implement the program correction as set forth in this bulletin prior to releasing the vehicle.
Dealer Reports
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).
Customer Reimbursement
Customer requests for reimbursement of previously paid repairs to correct the condition described in this bulletin are to
be submitted to the dealer prior to or by July 31, 2022. See General Motors Service Policies and Procedures Manual,
Product Field Action Customer Reimbursement Procedure (USA & Canada) or local Policies and Procedures, for details.

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 2 of 3

Customer Satisfaction Program
N212326940 Engine Oil Cooler Lines Detaching from Crimp
July 2021
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We have learned that your 2019 model year Chevrolet Silverado 1500 (New Model) or GMC Sierra 1500 (New Model)
may have a condition in which the engine oil cooler (EOC) lines may leak and detach from the crimp joints. Exposure to
cold temperature may also aggravate this condition. If the EOC lines leak, there may be an oil leak on the ground and if
the EOC lines detach while operating the vehicle, there will be an immediate decrease in oil pressure. This will coincide
with a warning on the driver information center display (“Oil Pressure Low Turn Vehicle Off”), along with warning
chimes. If the driver continues to operate the vehicle, a loss of propulsion is possible.
Your satisfaction with your 2019 model year Chevrolet Silverado 1500 (New Model) or GMC Sierra 1500 (New Model) 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 oil cooler lines, oil, oil filter and refill the coolant. This
service will be performed for you at no charge until July 31, 2023. 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.
Reimbursement: Even though you may have previously had repairs for this condition, you will still need to take your
vehicle to your dealer for additional repairs. If you have already paid for repairs for the condition described in this letter,
please complete the enclosed reimbursement form and present it to your dealer with all required documents. Working
with your dealer will expedite your request, however, if this is not convenient, you may mail the completed
reimbursement form and all required documents to Reimbursement Department, PO Box 33170, Detroit, MI 482325170. The completed form and required documents must be presented to your dealer or received by the
Reimbursement Department by July 31, 2022, unless state law specifies a longer reimbursement period.
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.
Division
Chevrolet
GMC
Puerto Rico – English
Puerto Rico – Español
Virgin Islands

Number
1-800-630-2438
1-866-996-9463
1-800-496-9992
1-800-496-9993
1-800-496-9994

Text Telephones (TTY)
1-800-833-2438
1-800-462-8583

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
Enclosure
N212326940

Page 3 of 3