Bulletin No.:

Service Bulletin

Date:

23-NA-143
August, 2023

TECHNICAL
Subject:
Brand:

Chevrolet

GMC

Radio Software Version Y169 – Multiple Updates for IOK
Model:

Model Year:
from

to

Silverado 1500

2023

2023

Silverado 2500/3500

2024

2024

Suburban

2022

2022

Tahoe

2022

2022

Sierra 1500

2023

2023

Sierra 2500/3500

2024

2024

Yukon
Yukon XL

2022

2022

VIN:
from

to

—

-

—

Engine:

Transmission:

-

—

—

Involved Region or Country

North America, Europe, Uzbekistan, Russia, Middle East, Bolivia (West), Chile (West),
Colombia (West), Ecuador (West), Peru (West), Japan, Cadillac Korea (South Korea),
Thailand (ASEAN), Other Africa, Argentina, Brazil, Paraguay, Uruguay, Australia

Additional Options (RPOs)

Equipped with RPO IOK

Condition

Some customers may comment on software related issues. Continuous improvement
software updates are being released with improvements made in several areas.

Cause

The cause of the condition may be software anomalies.

Correction

A new radio software update, version Y169, was released to service for vehicles
equipped with Infotainment system RPO IOK. In addition to providing general robustness
and stability enhancements, this update includes all enhancements from previous
software version releases. Along with the vehicles mentioned above, vehicles in
unconnected markets, and fleet customers may need the dealer to reprogram the radio
with the new software package.
Caution: to avoid potential programming errors, ensure both programming events
(Programming and USB File Transfer) are performed.

Y169 Most Notable Improvements
Important: Improvements will vary by model, build
configuration, system, and sales region. Not all
vehicles have all features.
Volume might ramp up to full after using the SWC to
increase volume
The system displays "Park Assist with Braking" instead
of "Park Assist"
Customer might not be able to hear Google Assistant
When there is an incoming call the notification comes
up at the same time as the incoming call screen
When changing PTM from Off to On the setting does
not apply
The WiFi Hotspot screen will not load
SXM shows the wrong channel
After cycling the speed limit recognition option, if you
switch display mode the message will come up "menu
unavailable while driving"
Copyright 2023 General Motors LLC. All Rights Reserved.

No audio with radio volume set to about 40%
If the system is locked with a PIN the cluster maybe
blank or show "Application Unavailable"
Customer might see an "Android Auto Could Not
Connect" message even though there is no concern
The trailiering app may show the wrong make of truck
When pressing the OK button on the "Focus your
attention on driving" screen the screen may come
back up
When switch from an AM favorite to the SXM Welcome
screen the favorite may stay highlighted
When turning the vehicle off and opening the door there
could be a Bluetooth disconnected screen that comes
up with the "Cancel" option truncated
If the "Back" button is pressed twice in a row it might
not take you back to the expected page
SXM favorites greyed out and unavailable
Vehicle might report an unknown fuel type

Page 2

August, 2023

"E-Ray When using electric power the dyno pages
might not be updating"
Not all DAB Announcements Categories are available"
After switching Users or doing an ignition cycle the
Previous Trip data may reset
Bluetooth and Android Auto may not automatically
connect
HUD might return to default pages after an ignition
cycle
"Hummer Improving text layout when switching from
Terrain to Offroad drive mode"
Stability improvement
While setting up trailer tire pressure sensors the wrong
screen might show
WiFi icon may be greyed out
When changing the language to Arabic the back button
did not change"
Changing the Startup or Shutdown volume is
inconsistent
During an OTA the radio could continue to retry causing
a battery drain
When switching to the Driver profile the Android Auto
may disconnect
When saving an SXM favorite there may not be a short
title
SXM may not show metadata
Norse translation for Cut/Copy/Paste"
During an OTA the "Install" button may have to be
pressed twice
If the customer cancels out of an OTA the system might
not go back to the expected screen
"Hummer Translation update for preconditioning
screen"
"Hummer Offroad app may crash"
"Hummer When going into the Pitch and Roll page the
screen might go black"
No SXM audio
"Hummer The OnStar Emergency calling screen may
not show during certain emergency events"
"E-Ray The value shown on the dyno slider might not
match the data in the graphs"
While using Alexa during the quick tour the right side of
the screen may show "speaking"
When the data plan expires for the customer there is no
notice when trying to use Alexa
When the trailer tire temperature is high the trailer tire
pressure screen on the cluster will flash frequently
When trying to use Google Voice Typing the screen
may go back to the previous page
Improving scroll bar graphics in OTA screen
Alexa may not work for playing Spotify music
The customer was able to start using Alexa while in an
OnStar call
When trying to add or remove Teen Driver keys the app
may crash
CarPlay may get stuck on the incoming call screen

Bulletin No.: 23-NA-143

While in CarPlay if you try to use Google Assistant to
switch to SXM the screen may go black
When the BCM loses connection with the trailer tire
pressure sensors the values for the tires show as
dashes
Translation and non NA fixes
Not all DAB Announcements Categories are available
When changing the language to Arabic the back button
did not change
Norse translation for Cut/Copy/Paste"

Service Procedure
Important: Service agents must comply with all
International, Federal, State, Provincial, and/or
Local laws applicable to the activities it performs
under this bulletin, including but not limited to
handling, deploying, preparing, classifying,
packaging, marking, labeling, and shipping
dangerous goods. In the event of a conflict between
the procedures set forth in this bulletin and the
laws that apply to your dealership, you must follow
those applicable laws.
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.
• 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 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.
• Please verify that the radio time and date are set
correctly before inserting USB drive into vehicle
for programming, otherwise an error will result.
• Clear DTCs after programming is complete.
Clearing powertrain DTCs will set the Inspection/
Maintenance (I/M) system status indicators to NO.

Bulletin No.: 23-NA-143

August, 2023

Important: The service technician always needs to
verify that the VIN displayed in the TLC left side drop
down menu and the top center window match the VIN
plate of the vehicle to be programmed prior to using
Service Programming System 2 (SPS2) for
programming or reprogramming a module.
• For the TLC application, service technicians need
to always ensure that the power mode (ignition) is
“ON” before reading the VIN from the vehicle’s
VIN master module and that they do not select a
VIN that is already in the TLC application memory
from a previous vehicle.
• If the VIN that shows up in the TLC top center
window after correctly reading the VIN from the
vehicle does not match the VIN plate of the
vehicle, manually type in the VIN characters from
the vehicle VIN plate into the TLC top center
window and use these for programming or
reprogramming the subject module with the
correct vehicle VIN and software and/or
calibrations.
• The Engine Control Module (ECM) is the master
module (for VIP vehicles) that TLC reads to
determine the VIN of the vehicle. If the VIN read
from the vehicle by TLC does not match the VIN
plate of the vehicle, the ECM also needs to be
reprogrammed with the correct VIN, software and
calibrations that match the vehicle’s VIN plate.
• The Body Control Module (BCM) is the master
module (for GEM vehicles) that TLC reads to
determine the VIN of the vehicle. If the VIN read
from the vehicle by TLC does not match the VIN
plate of the vehicle, the BCM also needs to be
reprogrammed with the correct VIN, software and
calibrations that match the vehicle’s VIN plate.

Page 3

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August, 2023

Bulletin No.: 23-NA-143

Caution: Be sure the VIN selected in the drop down
menu (1) is the same as the vehicle connected (2)
before beginning programming.

5743643

Important: If the vehicle VIN DOES NOT match, the
message below will be shown

5877000

Bulletin No.: 23-NA-143

August, 2023

Page 5

5644477

Important: Techline Connect screens shown above.
Important: If the same calibration/software warning is
noted on the TLC 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.
1. Inspect the current radio software version.
Navigate to Settings -> About -> Build Number ->
Information “i” to view and verify the software
version.
• If the build number is Y169 or greater, this
bulletin does not apply.
• If the build number is less than Y169, update
the radio software.
Tip: Once the USB update is initiated, there is no need
to monitor the progress.
• If an Infotainment over the air (OTA) update is
present in the radio Updates menu, check for
and reference any applicable field action
bulletins first.
• If the radio displays Conditions are not ideal,
there are many reasons this can display but be
aware that stable battery voltage is critical
during programming. Any fluctuation, spiking,
over voltage or loss of voltage will interrupt
programming.

Caution: to avoid potential programming errors that
might result in a Cadillac splash animation being
displayed on non-Cadillac models, ensure both
programming events (Programming and USB File
Transfer) are performed.
2. Install the software update via USB. Refer to A11
Radio: Programming and Setup in the Service
Manual.

Page 6

August, 2023

Bulletin No.: 23-NA-143

5644478

Note: The screenshot above is 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 Warranty Claim Code (WCC) screen shown above
on the job card. Refer to callout 1 above for the location
of the WCC on the screen.
3. Record SPS Warranty Claim Code on job card for
warranty transaction submission.

Bulletin No.: 23-NA-143

August, 2023

Page 7

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

*2889728

Update Radio Software to Y169 Multiple Updates

0.6 hr

*This is a unique Labor Operation for Bulletin use only.
Important: **To avoid warranty transaction rejections, carefully read and follow the instructions below:

6125814

•
•

The Warranty Claim Code must be accurately entered in the “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 “Warranty Claim Code”
field of the transaction, otherwise the transaction will reject. It is best practice to enter the FINAL code provided by SPS2.

Page 8

August, 2023

Bulletin No.: 23-NA-143

Warranty Claim Code Information Retrieval

6125774

If the Warranty Claim Code was not recorded on the
Job Card, the code can be retrieved in the SPS2
system as follows:
1. Open TLC on the computer used to program the
vehicle.
2. Select and start SPS2.
3. Select Settings (1).
4. Select the Warranty Claim Code tab (2).
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 August 17, 2023

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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