Customer Satisfaction Program
17456 Rear Wheel Hub Nut Loose
Reference Number:
Attention:

Release Date:
Revision:

N172120230

January 2018
00

This program is in effect until February 29, 2020.

Make
Chevrolet

Model
Silverado HD
Suburban
Sierra HD

GMC

Model Year
From
To
2017
2018
2017
2017
2017
2018

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 2017 model year Chevrolet Suburban, 2017-2018 model year Chevrolet Silverado HD and GMC
Sierra HD vehicles may have a condition in which the rear wheel hub nut could become loose due to the
rear wheel hub nut retainer not being formed properly. If the hub nut loosens, the StabiliTrak message
may be displayed in the driver information center (DIC) and the traction control indicator may illuminate,
axle fluid may leak from the axle seal area, and rear axle housing damage could occur.
Replace the hub nut retainer. Inspect the axle tube threads for damage and repair if necessary.

Parts
Quantity
2
2

Part Name
Lock, RR Wheel Bearing Adjustment Nut
Gasket, Rear Axle Shaft

Part No.
22793218
20920620

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
9103563

Description
Rear Axle Wheel Bearing Adjustment Nut Lock Replacement (both
sides)

Labor
Time
0.8

Trans.
Type
ZFAT

Net
Item
N/A

Service Procedure
1.

Remove the rear axle shaft. Refer to Rear Axle Shaft and Gasket Replacement (10.5/11.5 Inch Axle) in SI.

4918833

2.

Replace the Rear Axle Wheel Bearing Adjustment Nut Lock. To remove, use a pick or needle nose pliers to pull the
nut lock outwards and off.

Copyright 2018 General Motors. All Rights Reserved.

Page 1 of 3

Customer Satisfaction Program
17456 Rear Wheel Hub Nut Loose
3.

Replace the gasket and reinstall the rear axle shaft. Refer to Rear Axle Shaft and Gasket Replacement (10.5/11.5
Inch Axle) in SI.

4.

Repeat steps 1-3 on the other side.

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 February 29, 2020. 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 February 29, 2020, 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

Page 2 of 3

Customer Satisfaction Program
17456 Rear Wheel Hub Nut Loose
February 2018
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We have learned that your 2017 model year Chevrolet Suburban, 2017-2018 model year Chevrolet Silverado HD or
2017-2018 model year GMC Sierra HD may have a condition in which the rear wheel hub nut could become loose due
to the rear wheel hub nut retainer not being formed properly. If the hub nut loosens, the StabiliTrak message may be
displayed in the driver information center (DIC) and the traction control indicator may illuminate, axle fluid may leak from
the axle seal area, and rear axle housing damage could occur.
Your satisfaction with your 2017 model year Chevrolet Suburban, 2017-2018 model year Chevrolet Silverado HD or
2017-2018 model year GMC Sierra HD 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 hub nut retainer, inspect the axle tube threads for damage and
repair if necessary. This service will be performed for you at no charge until February 29, 2020. 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.
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
1-800-496-9992
1-800-496-9993
1-800-496-9994

Text Telephones (TTY)
1-800-833-2438
1-800-889-2438

We sincerely regret any inconvenience or concern that this situation may cause you. 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.
Terry M. Inch
Executive Director
Global Connected Customer Experience
17456

Page 3 of 3

GLOBAL SAFETY FIELD INVESTIGATIONS
DCS4662
URGENT - DISTRIBUTE IMMEDIATELY
Date:

January 29, 2018

Subject: 17456 - Customer Satisfaction Program
Rear Wheel Hub Nut Loose
Models: 2017-2018 Chevrolet Silverado HD
2017 Chevrolet Suburban
2017-2018 GMC Sierra HD
To:

All General Motors Dealers

General Motors is releasing Customer Satisfaction Program 17456 today. The
total number of U.S. vehicles involved is approximately 43,945. Please see
the attached bulletin for details.
Customer Letter Mailing
The customer letter mailing will begin on February 09, 2018.
Global Warranty Management (GWM)
The Investigate Vehicle History (IVH) screen in the GWM system will be updated
January 29, 2018. 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