23-NA-042 1..8

Service Bulletin

Bulletin No.: 23-NA-042

Date: March, 2023

TECHNICAL

Subject: Radio Software Version V164 Update

This bulletin replaces PIT5913A. Please discard all copies of PIT5913A.

Brand: Model:

Model Year: VIN:

Engine: Transmission:

from to from to

Buick

Enclave 2022

2023

— — — —

Encore GX 2021

Envision 2021

Cadillac

CT4

2021 2023

CT5

CT6

XT4

XT5

XT6

Chevrolet

Bolt EV 2022

2023

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 1500 2023 2023

Silverado

2500HD/3500HD

2021 2023

Suburban 2021 2021

Tahoe 2021 2021

Trailblazer 2021 2023

Traverse 2022 2023

Page 2 March, 2023 Bulletin No.: 23-NA-042

Brand: Model:

Model Year: VIN:

Engine: Transmission:

from to from to

GMC

Acadia 2021 2023

— — — —

Sierra 1500 2021 2021

Sierra 1500 Limited

(RPO J21, VIN Digit

5 = 8 / 9)

2022 2022

Sierra 1500 2023 2023

Sierra

2500HD/3500HD

2021 2023

Terrain 2022 2023

Yukon

2021 2021

Yukon XL

Involved Region or Country

North America, Europe, Russia, Middle East, Israel, Palestine, 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.

Correction

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.

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 improvemen ts contained in this release

may include:

Apps

• Intermittently 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 and 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

• 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

Bulletin No.: 23-NA-042 March, 2023 Page 3

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, you may still

see the downloading logo

Projection

• Wireless carplay cannot be connected after

forgetting 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 Apple carplay cannot connect screen on

autoconnect

• CarPlay information may not show up in the

audio app

• 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

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

• Return to dealer screen may appear

• 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

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 programm ed 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 character s from

the vehicle VIN plate into the TLC top center

window and use these for programmin g 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

Page 4 March, 2023 Bulletin No.: 23-NA-042

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 programmin g.

5743643

Important: If the vehicle VIN DOES NOT match, the

message below will be shown.

5877000

Bulletin No.: 23-NA-042 March, 2023 Page 5

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 instruction s. 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.

Page 6 March, 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 March, 2023 Page 7

Warranty Information

For vehicles repaired under the Bumper-t o-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

2889368*

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 8 March, 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 1

Modified Released March 15, 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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