Service Bulletin

Bulletin No.:

23-NA-042

Date:

July, 2023

TECHNICAL
Subject:

Radio Software Version V164 Update
This bulletin replaces PIT5913A. Please discard PIT5913A.

Brand:

Buick

Model:

Model Year:
from

Enclave

2022

Encore GX

2021

Envision

2021

to

VIN:
from

to

—

—

Engine:

Transmission:

—

—

2023

CT4
CT5
Cadillac

CT6
XT4

2021

2023

XT5
XT6

Chevrolet

Bolt EV

2022

Bolt EUV

2022

Blazer

2021

Camaro

2021

Corvette

2021

Equinox

2022

Malibu

2021

Silverado 1500

2021

2021

Silverado 1500
LTD (RPO J21,
VIN Digit 5 =
W / Y)

2022

2022

Silverado
2500HD/
3500HD

2021

2022

Suburban

2021

2021

Tahoe

2021

2021

Trailblazer

2021

2023

Traverse

2022

2023

Copyright 2023 General Motors LLC. All Rights Reserved.

2023

Page 2
Brand:

GMC

July, 2023
Model:

Model Year:
from

to

Acadia

2021

2023

Sierra 1500

2021

2021

Sierra 1500
Limited (RPO
J21, VIN Digit
5 = 8 / 9)

2022

2022

Sierra
2500HD/
3500HD

2021

2022

Terrain

2022

2023

2021

2021

Yukon
Yukon XL

Bulletin No.: 23-NA-042
VIN:

from

to

—

—

Engine:

Transmission:

—

—

Involved Region or Country

North America, Europe, Russia, Middle East, Israel, Palestine, Brazil, Chile, Colombia,
Ecuador, Paraguay, Peru, Uruguay, Japan, Cadillac Korea (South Korea), GM Korea
Company, China, Thailand, Australia/New Zealand

Additional Options (RPOs)

Equipped with Infotainment System RPOs IOS, IOT, IOU

Condition

Some customers may comment on software related issues. Continuous improvement
software updates are being released with improvements made in several areas. V164
contains over 35 improvements. Refer to V164 Most Notable Improvements section
below.

Cause

The cause of the condition may be software anomalies.
A new radio software update, version V164, was released to service for vehicles
equipped with Infotainment system RPO IOS, IOU or IOT. In addition to providing general
robustness and stability enhancements, this update includes all enhancements from
previous software version releases.
Note: The IOR radio does not get V164 and uses a totally different software. DO NOT
attempt to program an IOR radio with the software referenced in this bulletin.

Correction

Important: Some technicians are reporting that the radio remains on an older software
version after the radio displays the software update completed successfully. It is
important to ensure that the technician is inspecting the full information found within Build
Number and not other rows of information on the same screen. This requires the user to
locate the Build Number, and then select the Information icon (circled lower-case i) to see
the full software version file name. In these radios, the build number may begin with a
letter other than “V” but this is NOT the software version and is not unique to the software
release.
Important: After pressing the information icon, review the full software version file name.
In the middle of this long file name you see the V164 (or numerically higher/lower if a
different version is installed).
Important: Improvements will vary by model, build configuration, system, and sales
region. Not all vehicles have all features.

V164 Most Notable Improvements
Most notable improvements contained in this release
may include:
Apps
• Intermittently, an “SD Card Removed” message
will pop up in the Navigation app.
• While in the audio app, the radio may stop
working.
• Trailer Tire Pressure sensors may not be learned
in the Trailer app.
• Not being able to return to the home screen while
in the Camera app.

•

After an ignition cycle, the radio might go to a
black screen or stop working if using Sirius XM.
• Spotify icon truncated on Audio app.
Bluetooth
• Intermittent Bluetooth connection loss.
Instrument Cluster
• Voice recognition can be started while on an
OnStar or phone call.
• When downloading contacts, there is a progress
bar and circles on the Recents page of the cluster.

Bulletin No.: 23-NA-042

July, 2023

•

The temperature on the cluster and the display
may be different.
• After receiving and ending a call on the secondary
paired phone, the cluster may get stuck on the
phone menu.
Energy
• When using the Energy app, the radio may stop
working.
• When plugging in the vehicle, the display might
show “Now” instead of “Charging Upon Plug In.”
Over the Air (OTA)
• When a software update is cancelled, the
downloading logo may still be displayed.
Projection
• Wireless CarPlay cannot be connected after
unpairing another wireless Android Auto device.
• When the Android Auto screen comes up to
connect wirelessly, the screen may freeze if the
Cancel button is pressed.
• Removed the Apple CarPlay Cannot Connect
screen when a device fails to pair during the
autoconnect process.
• CarPlay information may not show up in the
audio app.
• Near Field Communications (NFC) chime may be
heard when NFC does not work.
• The Cannot Connect screen does not pop up after
the first connection on wireless CarPlay fails.
• Apple CarPlay is now functional in Guam.
Settings
• When performing a factory reset, the radio may
stop working.
• After performing a factory reset, the radio may
stop working when trying to switch users.
• When trying to go into the Language section
quickly after startup, the radio may stop working.
System
• After an ignition cycle, the radio might go black or
stop working if using Sirius XM (SXM).
SXM
• When changing power modes with the ignition
switch, the HVAC pop up might appear.
• During startup, the radio will show the brand
splash screen then go blank.
• Receiving a confirmation pop-up when changing
drive modes.
• A “Return to Dealer” message may appear on the
radio screen.
• SuperCruise setting toggle may not work.
Translations (Non-GMNA)
• Improved Mandarin translation
• Improved Brazilian Market translation

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

Page 3

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.
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

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July, 2023

Bulletin No.: 23-NA-042

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

5743643

Bulletin No.: 23-NA-042

July, 2023

Page 5

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

5877000

5644477

Important: Techline Connect screen 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. Document the WCC on the job card.
No further action is required. Refer to the Warranty
Information section of this bulletin.
1. Update the Radio module. Refer to A11 Radio:
Programming and Setup in the Service Manual.

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July, 2023

Bulletin No.: 23-NA-042

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

Bulletin No.: 23-NA-042

July, 2023

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
2889368*

Description

Labor Time

Radio Reprogramming with
SPS/USB to V164 Update

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 7

Page 8

July, 2023

Bulletin No.: 23-NA-042

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

3

Modified

Released March 15, 2023
Revised April 04, 2023 – Removed the 2023 Chevrolet Silverado 1500 and Sierra 1500
models and removed the 2023 Model Year from Chevrolet Silverado 2500HD/3500HD
and GMC Sierra 2500HD/3500HD models.
Revised June 28, 2023 – Added Brazil to Involved Region or Country section and
updated information under V164 Most Notable Improvements section.

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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