Service Bulletin

Bulletin No.:

20-NA-087

Date:

April, 2020

TECHNICAL
Subject:
Brand:

Cadillac

Blank Radio Display or No Audio
Model:

Model Year:
from

RPO:

to

Engine:

Transmission:

All

All

(equipped with Premium
Audio UQS)

XT4
XT6

Chevrolet

SIlverado
1500
Silverado
2500HD/
3500HD

GMC

Sierra 1500
Sierra
2500HD/
3500HD

2020

2020

Involved Region or Country

United States, Canada, Mexico

Additional Options (RPOs)

Equipped with Infotainment system (IOS, IOU, or IOT)

Condition

Some customers may comment on a blank or black display screen that recovers with an
ignition cycle, a loss of audio, or loss of video.
A very small population of vehicles were shipped to dealers with software versions
beneath U146 (V146). Versions prior to U146 (V146) may exhibit the condition.

Cause

The cause of the condition may be software anomalies.

Correction

Reprogram the A11 radio software via USB.

Service Procedure
Note: This bulletin ONLY applies to vehicles listed that
have radio software version LESS THAN U146 (V146).
If the current radio software version is U146 (V146) or
greater this bulletin does NOT apply.
Depending on the radio page being viewed, the
software version may be displayed as either U146 or
V146. The â Vâ branch and â Uâ branch designators
do not indicate any difference in the level of software, it
is the number that follows the â Vâ or â Uâ which
indicate software version.

Copyright 2020 General Motors LLC. All Rights Reserved.

Tip: While the radio may benefit in general from
installing the latest updates in TIS2Web, if the radio is
already on version U146 (V146) or greater, then the
software update for the conditions specifically listed in
this bulletin have already been installed
1. Inspect the radioâ s current software version.
Select Home, Settings, About, Build Number, and
touch the information icon to view the current
software version.
1.A.
If the version number is U145 (V145) or less,
proceed to Step 2
1.B.
If the version number is U146 (V146) or greater,
stop; this bulletin does not apply. Refer to SI for
further diagnosis.

Page 2

April, 2020

Bulletin No.: 20-NA-087

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
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 12âV 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, etc.
Clear DTCs after programming is complete.
Clearing powertrain DTCs will set the
Inspection/Maintenance (I/M) system status
indicators to NO.

5431207

Bulletin No.: 20-NA-087

April, 2020

Page 3

Important: TIS2WEB screen shown. Techline Connect
screen is simlar and will be included in the near future.
Important: If the Same Calibration/Software Warning
is noted on the SPS 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.
2. Reprogram the A11 Radio via USB. Refer to A11
Radio: Programming and Setup in SI.

5431209

Important: TIS2WEB screen shown. Techline Connect
screen is simlar and will be included in the near future.
Important: To avoid warranty transaction rejections,
you MUST record the warranty claim code provided on
the SPS Warranty Claim Code (WCC) screen 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.

Page 4

April, 2020

Bulletin No.: 20-NA-087

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

*9104713

Radio Module Reprogramming with SPS/USB

0.3 hr

*This is a unique Labor Operation for Bulletin use only.
Important: *To avoid warranty transaction rejections, carefully read and follow the instructions below:
• Submit as Transaction Type ZREG.
• The SPS Warranty Claim Code must be accurately entered in the â SPS Warranty Claim Codeâ 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 â Correctionâ field on the job card. Dealers must also enter one of the codes in the â SPS Warranty
Claim Codeâ field of the transaction, otherwise the transaction will reject. It is best practice to enter the FINAL code
provided by SPS.

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 TIS on the computer used to program the
vehicle.
2. Select and start SPS.
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 April 09, 2020