Customer Satisfaction Program
18027 Power Steering Loss of Assist
Reference Number:
Attention:

N172115610

Release Date:
Revision:

June 2018
00

This program is in effect until June 30, 2020

Make
Chevrolet
GMC

Model
Colorado
Canyon

Model Year
From
To
2015
2015
2015
2015

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 2015 model year Chevrolet Colorado and GMC Canyon vehicles may have been built with a
connector between the electric power steering motor and torque sensor that has a potential for fretting
corrosion. If this condition exists, power steering may be lost, and the driver may experience
unanticipated increased steering effort as the vehicle reverts to manual steering. A chime will also sound
in the vehicle, and a “Service Power Steering” message will appear on the Driver Information Center
(DIC). Manual steering functionality will be maintained but will require additional effort, particularly at
lower speeds.
Dealers are to replace the complete power steering rack assembly.

Parts
Quantity
1
1
2
2
1
2

Part Name
Electric Belt Drive Rack and Pinion Steering Gear
Electric Belt Drive Rack and Pinion Steering Gear
Steering Gear Bolt
Steering Gear Bolt (Rear)
Upper Intermediate Steering Shaft Upper Bolt
Steering Linkage Outer Tie Rod Bolt

Part No.
84494275
84494276
11589279
11570509
11610555
11609283

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
9103709
9103710
9103711
9103712

Description
Electric Belt Drive Rack & Pinion Steering Gear Replacement (2WD)
ADD: Align front toe
Electric Belt Drive Rack & Pinion Steering Gear Replacement (4WD)
ADD: Align front toe
Customer Reimbursement Approved
- For USA and Canada dealers only
Customer Reimbursement Denied – For USA dealers only

Labor
Time
1.6
0.7
1.7
0.7

Trans.
Type
ZFAT

Net
Item
N/A

ZFAT

N/A

N/A
N/A

ZFAT
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.
Service Procedure
1.

Replace the Electric Belt Drive Rack and Pinion Steering Gear. Refer to Electric Belt Drive Rack and Pinion
Steering Gear Replacement (2WD) or Electric Belt Drive Rack and Pinion Steering Gear Replacement (4WD).

Copyright 2018 General Motors. All Rights Reserved.

Page 1 of 3

Customer Satisfaction Program
18027 Power Steering Loss of Assist
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 June 30, 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 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, 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.
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 June 30, 2019. See General Motors Service Policies and Procedures Manual,
Section 6.1.11 – 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
18027 Power Steering Loss of Assist
June 2018
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We have learned that your 2015 model year Chevrolet Colorado and GMC Canyon vehicles may have been built with a
connector between the electric power steering motor and torque sensor that has a potential for fretting corrosion. If this
condition exists, power steering may be lost, and the driver may experience unanticipated increased steering effort as
the vehicle reverts to manual steering. A chime will also sound in the vehicle, and a “Service Power Steering” message
will appear on the Driver Information Center (DIC). Manual steering functionality will be maintained but will require
additional effort, particularly at lower speeds.
Your satisfaction with your GM vehicle 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 complete power steering rack assembly. This service will be
performed for you at no charge until June 30, 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. 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 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 48232-5170. The
completed form and required documents must be presented to your dealer or received by the Reimbursement
Department by June 30, 2019, 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
1-800-222-1020
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.
Neelie O’Connor
Executive Director
North America Contact Center Operations

Enclosure
18027

Page 3 of 3

GLOBAL SAFETY FIELD INVESTIGATIONS
DCS4788
URGENT - DISTRIBUTE IMMEDIATELY
Date:

June 21, 2018

Subject: 18027 - Customer Satisfaction Program
Power Steering Loss of Assist
Models: 2015 Chevrolet Colorado
2015 GMC Canyon
To:

All General Motors Dealers

General Motors is releasing Customer Satisfaction Program 18027 today. The
total number of U.S. vehicles involved is approximately 6,261. Please see the
attached bulletin for details.
Customer Letter Mailing
The customer letter mailing will begin on June 27, 2018.
Global Warranty Management (GWM)
The Investigate Vehicle History (IVH) screen in the GWM system will be updated June
22, 2018. Please hold all warranty transactions until IVH has been updated.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS