Bulletin No.: 23-NA-222

Service Bulletin

Date: June, 2024

TECHNICAL
Subject:

Radio Software Version W26E-172.4.2-M169-SQBR4-123.4 – Multiple
Updates for IVD

This Service Bulletin replaces PIT6092B, PIT6094A and PIT6099A. Please discard all
versions of PIT6092, PIT6094 and PIT6099.

Brand:

Model:

Model Year:
from

VIN:
to

LYRIQ
Cadillac
Chevrolet

2024

XT4
Blazer EV

2024

2024
2024

from

to

—

—

SOP

1GYAZAR4XRF171218

SOP

3GNKDBRJ2RS22
9653

Engine:

Transmission:

—

—

Involved Region or Country

North America, Europe, Middle East, Cadillac Korea (South Korea)

Additional Options (RPOs)

Equipped with Infotainment RPO IVD

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

Newer software has been released for the Blazer EV, refer to 23-NA-227 for the latest
software.
A new radio software update, version W26E-172.4.2-M169-SQBR4-123.4, was released
to service for vehicles equipped with Infotainment system RPO IVD being brought into
the service department. 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; fleet customers may need the dealer to reprogram the radio with the new software package.
This new radio software update has been released via an Over-the Air-Update. Customer
will receive a Software Update notification once the software has been downloaded to
their vehicle. Customers need to accept the OTA when prompted.
Caution: to avoid potential programming errors, ensure both programming events (Programming and USB File Transfer) are performed.
Important: Improvements will vary by model, build configuration, system, and sales region. Not all vehicles have all features.

Most Notable Improvements:

• Bad audio quality.
• (Cadillac only) MFC press not functioning.

Radio:
• Stability improvements.
• RVC does not work or shows red triangle.
• Delayed RVC bring up.
• Cannot launch Android Auto/Apple CarPlay.

• (Cadillac only) MFC focus issue.
• CarPlay black screen.
• No audio.
• Radio stays on Bluetooth instead of Android Auto/
Apple CarPlay.

• Infotainment lockout while driving not working.

• Virtual Controls not responding when pressed
during welcome animation.

• HVAC screen missing icons/text.

• Add Phone button not responding.

Copyright 2024 General Motors. All Rights Reserved.

Page 2

June, 2024

Bulletin No.: 23-NA-222

• Welcome animation freezes.

• Radio crashes when long pressing power button.

• Camera view selection not available.

• Bluetooth not working.

• Overspeed chime does not continuously play.

• Bluetooth will not reconnect.

• Pop Up Window layout issues.

• Button layout errors.

• Welcome animation plays twice after quick door
open ignition on.

• Radio sets DTC B1596.82 with no impact to RVC
function.

• Reset Trip not functioning.

• RVC launches on its own.

• Add profile stuck loading.

• Camera app exit and view selection buttons don't
come up.

• Universal Remote settings do not respond
correctly.

• Some buttons do not respond.

• Ambient Lighting app crashes.

• Camera app layout and views distorted.

• Ambient lighting app not working.

• System settings not retained over key cycle.

• Ambient Lighting missing audio selection
feedback.

• Camera view selection not available.

• Forward camera exits at speeds lower than target
speed.

• Cameras do not close while driving or when in
park.

• Radio does not respond/freezes.

• Trailer profile notifications persist.

• Driver settings not being saved.

• Cannot control Ambient Lighting.

• Trailering Light Test screen stuck.

• Trailering total mileage not updating.

• Android Auto display shifted on the screen.

• Turn By Turn error message displays incorrectly.

• Android Auto/Apple CarPlay won't launch after
switch user.

• Cannot open virtual controls window.

• Profiles page blank after deleting new profile.
• Radio resets after sleep cycle.

• Theme cards missing.

• User account name not updating.
• VCU stuck in GUEST user.

• Audio app crashes.

• Virtual controls do not respond when camera view
is up.

• RVC stays on incorrectly.

• Can't dismiss pop ups.

• Audio does not lower for notifications.

• Voice search not available when driving.

• Switching themes not working.

• Can't sign into Google Play Store.

• (EV only) Audio issues when using MaxPower
Mode.

• Window position Virtual Controls not working.

• Tire pressure not updating (vehicle info).

• CarPlay screen changes to home screen on its
own.

• Audio plays during a call.

• XM not available.

• Audio settings page layout errors.

• (EV only) Charge battery pop up does not come up
when using Max Power below SOC level.

• Blank screen when pushing back button on teen
driver add key pop up.

• Audio stuck on Bluetooth source.

• Virtual Lighting controls not functioning.

• Climate app not functioning.

• Wrong units shown.

• Camera DTC B1C47 set incorrectly.

• Temperature on radio display not updating.

• Connect Phone list dialog box shows excess
material.

• OnStar TBT starting audio sometimes does not
play.
• Bluetooth media continues playing after source
change.
• Pop up disappears too quickly.
• Bluetooth media not shown when phone
connected.
• Presets change order after key cycle.
• Bluetooth media queue not correctly showing.

• Crash from SXM Browse Screen.
• Phone app unresponsive to touch.
• Podcasts show default album art.
• Date/Time display errors out when turning off
vehicle.
• Pop ups not appearing.
• Profile loading repeats.

Bulletin No.: 23-NA-222

June, 2024

• Radio app layout errors.

• Virtual Controls App will not open.

• Radio display defaults to Virtual Controls screen on
ignition.

• LCDD provisioning fails and gets stuck.

Page 3

• Radio does not retain last screen after sleep cycle.

• Virtual controls window sized incorrectly and cuts
off some buttons.

• Driver PIN is not cleared after software update.

• Loss of all audio and chimes over key cycle.

• Radio presets not working.

• Voice assistant pop up stuck.

• Radio resets during emergency call.

• Welcome animation missing vehicle model.

• Embedded apps not updating.

• Media app plays incorrect source.

• Radio stays on around 20 seconds after vehicle
shutdown.

• Wi-Fi name and password cannot be changed.

• Embedded Maps app view distorted.

• XM Media app shows "Unavailable" but music is
playing.

• RVC does not brighten in dim settings.

• WOW Mode animation not working.

• Emergency announcement does not interrupt
audio from other sources.

• (Cadillac only) MFC rotation not functioning.

• RVC screen flickering.

• Navigation crashes.

• Exit "X" button not working on some apps.

• No data on connected devices.

• Service tire pressure monitor message shown
incorrectly.

• Radio display start up animation failed.

• External Wi-fi password not saved.
• Favorites window shifting.
• QuickStartUp fails to resume.
• Geofencing creation issues.
• SXM favorites do not play audio.
• Geofencing positioning errors.
• Teen driver options not responding.
• Google Assistant pop up does not display.
• Third party app not shown on new user profile.
• Google Maps freezes when editing route during
route calculations.
• Traffic Signal Recognition telltale not following
driver setting.
• Trailering app crashing.
• Trailering notification missing.
• HVAC menu doesn't provide feedback when
changing fan speed.
• HVAC Temp Knob doesn't respond.
• Incorrect Google Map data shown.
• Incorrect information when on two calls.

• MyBrand won't install.

• Camera UI not responding after shift from PARK.
• Camera gridlines incorrectly sized.
• OnStar call stuck on connecting screen.
• OnStar missing location notification during calls.
• Climate app not functioning with pop up "vehicle
must be running" when vehicle is already running.
• Radio loses some connected services function
after factory reset.
• Active Noise Cancellation creating loud droning
and other audio abnormalities inside of vehicle.

Phone:
• CarPlay audio still through vehicle when toggled to
phone.