Customer Satisfaction Program
N192219370 Engine Harness Chafing
Release Date:
Attention:

November 2019

Revision:

00

This program is in effect until December 31, 2021.

Make
Chevrolet
GMC

Model Year
From
To
2019
2019
2019
2019

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

RPO
L3B
L3B

Description
2.7L, 4cyl. Turbo engine
2.7L, 4cyl. Turbo engine

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 (New Model) and GMC Sierra 1500 (New Model) vehicles,
equipped with a 2.7L, 4 cyl. Turbo engine (L3B), may have a condition where the engine wiring harness
could wear through in several locations. This may allow the engine harness to short to ground and/or be
severed, which may lead to a check engine light, reduced engine power, no start condition or in rare
cases a stall.
Dealers are to wrap the wiring harness with Nylogard sleeve(s) in areas of concern.

Parts
Quantity
2
1
4
1
1

Part Name

Part No.
84220678
84826758
11509086
11547116
84396606

Engine Harness Sleeve
Engine Harness Sleeve
Tie Strap
Gray Offset Tie Strap
Black Push Pin Tie Strap

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
9104597

Labor
Time
1.5
0.5
0.5

Description
Install Engine Harness Sleeves
ADD: Repair Engine Harness Upper
ADD: Repair Engine Harness Lower

Trans.
Type

Net
Item

ZFAT

N/A

Service Procedure
1.

Open hood and install fender covers.

2.

Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement in SI.

5372060

3.

Remove the evaporative emission canister purge tube. Refer to Evaporative Emission Canister Purge Tube
Replacement in SI.

Copyright 2019 General Motors. All Rights Reserved.

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Customer Satisfaction Program
N192219370 Engine Harness Chafing

5372063

4.

Remove the starter solenoid cable retainers and move the channel out of the way for access to the engine harness.
Refer to Starter Solenoid Cable Replacement in SI.

5386374

5.

Inspect the engine harness (across the camshaft cover as shown) for any damage. Repair as required. Refer to Wire
to Wire Repair in SI.

5392844

6.

Carefully install the protective sleeve velcro side up around the engine harness. Be sure the edge of the harness is
covered with the sleeve as shown above.

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Customer Satisfaction Program
N192219370 Engine Harness Chafing

5392846

7.

Install tie straps to the ends of the protective sleeve as shown above.

8.

Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in SI.

5386376

9.

Locate the engine wiring harness where the protective sleeves need to be installed as shown above.

10. Remove and discard the engine harness retainers/clips (if equipped with heater cord, remove retaining clip from the
cord).
11. Inspect the harness for any damage. Repair as required. Refer to Wire to Wire Repair in SI.

5386380

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Customer Satisfaction Program
N192219370 Engine Harness Chafing
Important: Be sure the protective sleeve is installed past the lower control arm washers (1) to prevent any damage to
the engine harness.
12. Install the protective sleeve around the lower engine harness as shown (near the shock tower and control arm).

5386383

13. Install the protective sleeve around the upper engine harness as shown.
14. Loosely install the tie straps around protective sleeve.

5386385

15. Install the engine harness clips/tie straps as shown.
16. Trim all tie straps.
17. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in SI.
18. Install the evaporative emission canister purge tube. Refer to Evaporative Emission Canister Purge Tube
Replacement in SI.
19. Install the starter solenoid cable retainers and mover the channel out of the way for access. Refer to Starter Solenoid
Cable Replacement in SI.
20. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement in SI.
21. Remove the fender covers and close hood.
22. Check/Clear any DTC’s.
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
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Customer Satisfaction Program
N192219370 Engine Harness Chafing
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 December 31, 2021. 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 followup 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 December 31, 2021, you must take the steps necessary to be sure the program correction has been made before
selling or releasing the vehicle.
Dealer Reports
For dealers with involved vehicles, a listing with involved vehicles has been prepared and will be provided to U.S. and
Canadian dealers through the GM GlobalConnect Recall Reports or sent directly to export dealers. The listing may
contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor
vehicle registration data for any purpose other than follow-up necessary to complete this program is a violation of law in
several states/provinces/countries. Accordingly, you are urged to limit the use of this report to the follow-up necessary to
complete this program.
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, Sections 1.4 and 6.1.10, 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

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Customer Satisfaction Program
N192219370 Engine Harness Chafing
December 2019
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We have learned that your 2019 model year Chevrolet Silverado or GMC Sierra may have a condition where the engine
wiring harness could wear through in several locations. This may allow the engine harness to short to ground and/or be
severed, which may lead to a check engine light, reduced engine power, no start condition or in rare cases a stall.
Your satisfaction with your Silverado or Sierra 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 wrap the wiring harness with Nylogard sleeve(s) in areas of concern. This
service will be performed for you at no charge until December 31, 2021. 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.
Division
Chevrolet
GMC
Puerto Rico – English
Puerto Rico – Español
Virgin Islands

Number
1-800-222-1020
1-800-462-8782
1-800-496-9994
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
Executive Director
North America Contact Center Operations
N192219370

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GLOBAL SAFETY FIELD INVESTIGATIONS
DCS5226
URGENT - DISTRIBUTE IMMEDIATELY
Date:

November 20, 2019

Subject: N192219370 - Customer Satisfaction Program
Engine Harness Chafing
Models: 2019 Chevrolet Silverado 1500 (New Model) equipped with 2.7L, 4cyl.
Turbo engine (RPO L3B)
2019 GMC Sierra 1500 (New Model) equipped with 2.7L, 4cyl. Turbo
engine (RPO L3B)

To:

All General Motors Dealers

General Motors is releasing Customer Satisfaction Program N192219370
today. The total number of U.S. vehicles involved is approximately 11,586.
Please see the attached bulletin for details.
Customer Letter Mailing
The customer letter mailing will begin on December 04, 2019.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen will
be updated November 20, 2019. A list of involved vehicles in dealer new inventory is
attached to this message. Please hold all warranty transactions until IVH has been
updated.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS