GLOBAL SAFETY FIELD INVESTIGATIONS
DCS4925
URGENT - DISTRIBUTE IMMEDIATELY
Date:

December 10, 2018

Subject: 18165 – Customer Satisfaction Program
Super Cruise Control Software Improvement
Revised Customer Letter
Models: 2018 Cadillac CT6
Equipped with Hands-Free Lane Following (UKL)

To:

All General Motors Dealers

This bulletin is being revised to include an updated customer letter. Please
discard all previous copies of bulletin 18165.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS

Customer Satisfaction Program
18165 Super Cruise Control Software Improvement
Reference Number:

N172144300, N182153440,
N182186210

Release Date:

December 2018

Revision: 01
This bulletin is being revised to include an updated customer letter. Please
discard all previous copies of bulletin 18165.
This program is in effect until December 31, 2019.

Revision Description:
Attention:
Make
Cadillac

Model
CT6

Model Year
From
To
2018
2018

RPO
UKL

Description
Hands-Free Lane Following
(Super Cruise)

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

All 2018 model year Cadillac CT6 vehicles equipped with Hands-Free Lane Following (UKL) require
control software improvement to optimize the performance of the Super Cruise system.
Reprogram the long-range radar and active safety control modules.

Parts
No parts are required for this repair.
Warranty Information
Labor
Operation
9104157*

Description
Active Safety Control Module Programming
Add: Long Range Radar Reprogramming
Add: Long Range Radar Reprogramming Not Required (Same
Calibration Block)

Labor
Time
0.3
0.3
0.2

Trans.
Type
ZFAT

Net
Item
N/A

* To avoid warranty transaction rejections, the SPS Warranty Claim Code must be entered when submitting this
transaction. Note that if multiple modules are reprogrammed, all claim codes must be entered with a comma separating
each code.
Service Procedure
Note: Carefully read and follow the instructions below.

•

Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector.
If there is an interruption during programming, programming failure or control module damage may occur.

•

Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will
interrupt programming. Install a GM Authorized Programming Support Tool to maintain system voltage. Refer
https://www.gmdesolutions.com/ for further information. If not available, connect a fully charged 12 V jumper or
booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger.

•

Turn OFF or disable systems that may put a load on the vehicles battery such as; interior lights, exterior lights
(including daytime running lights), HVAC, radio, etc.

•

Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M)
system status indicators to NO.

Caution: If the Same Calibration/Software Warning is noted on the SPS Controller screen, do NOT attempt to program
the module. No further action is required. Refer to the Warranty section of the bulletin and use labor operation code
9104157, Module Programming Not Required.
1.

2.

Reprogram the Long Range Radar Module (LRR) and Active Safety Control Module (ASCM). Refer to
• K124 Active Safety Control Module: Programming and Setup (for K124A and K124B (With UKL))
• B233B Radar Sensor Module – Long Range: Programming and Setup in SI.
Record both SPS Warranty Claim Codes on job card for warranty transaction submission.

Copyright 2018 General Motors. All Rights Reserved.

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Customer Satisfaction Program
18165 Super Cruise Control Software Improvement

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 December 31, 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 December 31, 2019, 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).

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
18165 Super Cruise Control Software Improvement
December 2018
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We are pleased to inform you that we have developed a software update package for your 2018 model year Cadillac
CT6 with Super Cruise. The software updates included in this customer satisfaction program are meant to continue
enhancing your experience with Super Cruise.
The software update will enhance both the lane centering and adaptive cruise control features. This includes upgrades
that increase both Super Cruise and adaptive cruise control availability while in heavy traffic and enhanced braking
behavior while in Super Cruise.
What We Will Do: Your GM dealer will reprogram the long-range radar and active safety control modules. This service
will be performed for you at no charge until December 31, 2019. 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
Cadillac
Puerto Rico – English
Puerto Rico – Español
Virgin Islands

Number
1-800-458-8006
1-800-496-9992
1-800-496-9993
1-800-496-9994

Text Telephones (TTY)
1-800-833-2622

We truly appreciate you taking the time to update 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 Cadillac CT6 provides you
many miles of enjoyable driving.
Neelie O’Connor
Executive Director
North America Contact Center Operations
18165

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