GLOBAL SAFETY FIELD INVESTIGATIONS
DCS4989
URGENT - DISTRIBUTE IMMEDIATELY
Date:

March 11, 2019

Subject: N192210460 - Service Update
eBoost Control Module Software False Detection with DTC Associated
Models: 2019 Cadillac CT6 w/ LSY or LTA motors
2019 Chevrolet Silverado 1500 (New Model)
2019 GMC Sierra 1500 (New Model)
To:

All General Motors Dealers

General Motors is releasing Service Update N192210460 today. The total
number of U.S. vehicles involved is approximately 159,117. Please see the
attached bulletin for details.
Global Warranty Management (GWM)
The Investigate Vehicle History (IVH) screen in the GWM system will be updated March
11, 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

Service Update
N192210460 eBoost Control Module Software False Detection with
DTC Associated
Release Date:
Attention:

Revision:

March 2019

00

This service update includes vehicles in dealer inventory and customer vehicles that return to the
dealership for any reason. This bulletin will expire at the end of the involved vehicle’s New Vehicle Limited
Warranty period.

Make

Model Year
From
To

Model

Cadillac

CT6

2019

2019

Chevrolet
GMC

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

2019
2019

2019
2019

RPO
LSY
LTA

Description
2.0L TURBO
4.2L TWIN TURBO

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 Cadillac CT6 equipped with engine RPO’s LSY or LTA, Chevrolet Silverado 1500 (New
Model), and GMC Sierra 1500 (New Model) vehicles have a condition where the brake system control
module (BSCM) may cause a service brake assist message to appear on the driver’s information center
(DIC), and a service engine soon light to illuminate on the dashboard. This may cause the brake pedal
feel to be different. The pedal travel will increase for normal/light braking applies. This is caused by a
software issue where the motor position sensors do not correlate.
Dealers will reflash the BSCM with updated software.

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

Description

Labor
Time

Trans.
Type

Net
Item

9104166

Brake System Control Module (BSCM) Reprogramming with SPS

0.3

ZFAT

*

9104341

Verified Module Software or Calibration Level: Module Programmed
with Same Level Software or Calibration.

0.2

ZFAT

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.
Warranty Claim Code Information Retrieval
If the SPS Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS system as
follows:
-

Open TIS on the computer used to program the vehicle
Select and start SPS
Select Settings
Select the Warranty Claim Code tab

The VIN, Warranty Claim Code and Date/Time will be listed on a roster of recent programming events. If the code is
retrievable, dealers should resubmit the transaction making sure to include the code in the SPS Warranty Claim Code
field.
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 to

Copyright 2019 General Motors. All Rights Reserved.

Page 1 of 3

Service Update
N192210460 eBoost Control Module Software False Detection with
DTC Associated
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.

5164840

Note: If the Same Calibration/Software Warning is noted on the SPS Summary screen, record the warranty claim code
(WCC) and select OK and follow screen instructions. The WCC is located in the Service Programming System dialogue
box of the SPS Summary screen. No further action is required. Refer to the Warranty section of the bulletin.

5263446

1.

Reprogram the K160 Brake System Control Module (BSCM). Refer to K160 Brake System Control Module
Programming and Setup in SI.

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Service Update
N192210460 eBoost Control Module Software False Detection with
DTC Associated

5164843

2.

Record SPS Warranty Claim Code on job card for warranty transaction submission.

Dealer Responsibility
Whenever a vehicle subject to this service update enters your vehicle inventory, or is in your facility for service in the
future, and the vehicle is still covered under the New Vehicle Limited Warranty, you must take the steps necessary to be
sure the service update correction has been made before selling or releasing the vehicle.
All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers' possession
and subject to this bulletin 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, dealer-traded,
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.

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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