Service Bulletin

Bulletin No.:

21-NA-112

Date:

May, 2021

TECHNICAL
Subject:

Vehicle Software Update (VeSCoM)

Brand:

Model:

Cadillac

Escalade

Involved Region or Country

Model Year:
from

to

2021

2021

VIN:
from

Engine:

Transmission:

to

North America

Additional Options (RPOs)

Condition

Some customers 2021 model year Cadillac Escalade vehicles need to receive the latest
vehicle software configuration management (VeSCoM) software update.
A continuous improvement software update is being released with updates to multiple
modules. Some of the most notable issues addressed:
• Adaptive cruise control turns off, drops out. “Service Driver Assist" message on DIC –
Front Camera Module, Long Range Radar Module
• Instrument Panel Cluster will go completely blank and will not come back on until next
key cycle - Instrument Panel Cluster
• “Service Headlamp” message on DIC – Adaptive Forward Lighting Module
• “Service Steering Column Lock” message on DIC – Electronic Steering Column Lock
Module
• “Service Theft Deterrent System” message on DIC; Theft Alarm Went Off
Unexpectedly – Body Control Module
• Check Engine Light – “Service Brake Assist” message on DIC – Brake System Control
Module;

Cause

The cause of the condition may be software anomaly.

Correction

Dealers will sequentially reprogram affected modules with service programming system
(SPS) or techline connect (TLC).

Service Procedure
Caution: Before downloading the update files, be sure
the computer is connected to the internet through a
network cable (hardwired). DO NOT DOWNLOAD or
install the files wirelessly. If there is an interruption
during programming, programming failure or control
module damage may occur.
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

Copyright 2021 General Motors LLC. All Rights Reserved.

programming. Install a GM Authorized
Programming Support Tool to maintain system
voltage. Refer to 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.
• Follow the on-screen prompts regarding ignition
power mode, but ensure that anything that drains
excessive power (exterior lights, HVAC blower
motor, etc) is off
• Clear DTCs after programming is complete.
Clearing powertrain DTCs will set the Inspection/
Maintenance (I/M) system status indicators to NO.
Caution: Be sure the VIN selected in the drop down
menu (1) is the same as the vehicle connected (2)
before beginning programming.

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Important: Techline Connect and TIS2WEB screens
shown above.
Important: If the same calibration/software warning is
noted on the TLC or SPS Summary screen, select OK
and follow screen instructions. After a successful
programming event, 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.
Important: When programming a module in GM’s new
Vehicle Intelligence Platform, or VIP, the power mode
(ignition) needs to be off or errors may occur. This
involves the 2020 Chevrolet Corvette, Cadillac CT5 and
CT4, as well as the upcoming full-size Chevrolet, GMC,
Cadillac SUVs and Buick Envision. Serial Data
Message Authentication also needs to have the
ignition off.
1. Connect the MDI2 and open TLC.

Important: If issues arise during the Multimodule
Vescom Sequence programming, Contact Techline
Customer Support Center 1-800-828-6860 for English
or 1-800-503-3222 for French (Canadian) for
assistance.
2. Using SPS2, select ZFA, Vescom Multimodule
Coordinated Sequence for programming.
• For the first programming event, select
“Programming Part 1” option under Select
Function/Sequence. It is normal for techline to
take 10+ minutes to process data for this
sequence before any programming event
begins. Be patient.

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Note: The screenshots above are an example of
module programming and may not be indicative of the
specific module that is being programmed. Module
selection and VIN information have been blacked out.
Important: To avoid warranty transaction rejections,
you MUST record the warranty claim code provided on
the SPS Warranty Claim Code (WCC) screen shown
above on the job card. Refer to callout 1 above for the
location of the WCC on the SPS screen
3. Record SPS Warranty Claim Code on job card for
warranty transaction submission.
• Hit “Proceed with same VIN” to continue
programming the vehicle.
Note: The Cadillac Escalade DOES NOT require
Programming Part 2. Only “Programming 1,”
“Programming Part 3,” and “Programming Part 4.” Will
be available to you.
4. Proceed to again select ZFA, Vescom Multimodule
Coordinated Sequence for programming.
• For the second programming event, select
Programming Part 3 under “Select Function/
Sequence” and proceed with programming.

Page 5

• Record the SPS Warranty Claim Code in your
correction field for this programming event.
• Hit “Proceed with same VIN” to continue
programming the vehicle.
5. For the final programming event, again select ZFA,
Vescom Multimodule Coordinated Sequence for
programming.
• For the third programming event, select
Programming Part 4 under “Select Function/
Sequence” and proceed with programming.
• Record the SPS Warranty Claim Code in your
correction field for this programming event.
6. After programming is finished, go into GDS2 and
clear codes in all modules.

Warranty Information
For vehicles repaired under the Bumper-to-Bumper
coverage (Canada Base Warranty coverage), use the
following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH)
for coverage information.

Labor Operation

Description

Labor Time

9700024*

Sequenced Reprogramming Event for 2021 Cadillac Escalade
VesCom 21.10

1.5 hr

*This is a unique Labor Operation for Bulletin use only.
Important: **To avoid warranty transaction rejections, carefully read and follow the instructions below:
• The Warranty Claim Code must be accurately entered in the “SPS Warranty Claim Code” field of the transaction.
• When more than one Warranty Claim Code is generated for a programming event, it is required to document all Warranty
Claim Codes in the “Correction” field on the job card. Dealers must also enter one of the codes in the “SPS Warranty Claim
Code” field of the transaction, otherwise the transaction will reject. It is best practice to enter the FINAL code provided by
SPS/SPS2.

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:
1. Open TLC/TIS on the computer used to program
the vehicle.
2. Select and start SPS/SPS2.
3. Select Settings.
4. 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.
Version

1

Modified

Released May 11, 2021

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 equipment, tools, 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 GM dealer for information on whether your vehicle may benefit from the
information.

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