Service Bulletin

Bulletin No.:

23-NA-222

Date:

April, 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:
Cadillac
Chevrolet

Model:
LYRIQ
XT4
Blazer EV

Model Year:
from

to

2024

2024

2024

2024

VIN:
from

to

—

—

SOP

1GYAZAR4XRF171218

SOP

3GNKDBRJ2RS229653

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.
For the LYRIQ programming instruction please refer to PIT6065.
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:
Radio:
• Stability improvements.
• RVC does not work or shows red triangle.
• Delayed RVC bring up.
• Cannot launch Android Auto/Apple CarPlay.
• Infotainment lockout while driving not working.
• HVAC screen missing icons/text.
• Bad audio quality.
Copyright 2024 General Motors LLC. All Rights Reserved.

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(Cadillac only) MFC press not functioning.
(Cadillac only) MFC focus issue.
CarPlay black screen.
No audio.
Radio stays on Bluetooth instead of Android Auto/
Apple CarPlay.
Virtual Controls not responding when pressed
during welcome animation.
Add Phone button not responding.
Welcome animation freezes.
Camera view selection not available.

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April, 2024

Overspeed chime does not continuously play.
Pop Up Window layout issues.
Welcome animation plays twice after quick door
open ignition on.
Reset Trip not functioning.
Add profile stuck loading.
Universal Remote settings do not respond
correctly.
Ambient Lighting app crashes.
Ambient lighting app not working.
Ambient Lighting missing audio selection
feedback.
Forward camera exits at speeds lower than target
speed.
Radio does not respond/freezes.
Driver settings not being saved.
Trailering Light Test screen stuck.
Android Auto display shifted on the screen.
Android Auto/Apple CarPlay won't launch after
switch user.
Profiles page blank after deleting new profile.
Radio resets after sleep cycle.
Audio app crashes.
RVC stays on incorrectly.
Audio does not lower for notifications.
Switching themes not working.
(EV only) Audio issues when using
MaxPower Mode.
Tire pressure not updating (vehicle info).
Audio plays during a call.
Audio settings page layout errors.
Blank screen when pushing back button on teen
driver add key pop up.
Virtual Lighting controls not functioning.
Wrong units shown.
Temperature on radio display not updating.
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.
Radio crashes when long pressing power button.
Bluetooth not working.
Bluetooth will not reconnect.
Button layout errors.
Radio sets DTC B1596.82 with no impact to RVC
function.
RVC launches on its own.
Camera app exit and view selection buttons don't
come up.
Some buttons do not respond.

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Bulletin No.: 23-NA-222
Camera app layout and views distorted.
System settings not retained over key cycle.
Camera view selection not available.
Theme cards missing.
Cameras do not close while driving or when
in park.
Trailer profile notifications persist.
Cannot control Ambient Lighting.
Trailering total mileage not updating.
Turn By Turn error message displays incorrectly.
Cannot open virtual controls window.
User account name not updating.
VCU stuck in GUEST user.
Virtual controls do not respond when camera view
is up.
Can't dismiss pop ups.
Voice search not available when driving.
Can't sign into Google Play Store.
Window position Virtual Controls not working.
CarPlay screen changes to home screen on
its own.
XM not available.
(EV only) Charge battery pop up does not come
up when using Max Power below SOC level.
Audio stuck on Bluetooth source.
Climate app not functioning.
Camera DTC B1C47 set incorrectly.
Connect Phone list dialog box shows excess
material.
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.
Radio app layout errors.
Radio display defaults to Virtual Controls screen
on ignition.
Radio does not retain last screen after sleep cycle.
Driver PIN is not cleared after software update.
Radio presets not working.
Radio resets during emergency call.
Embedded apps not updating.
Radio stays on around 20 seconds after vehicle
shutdown.
Embedded Maps app view distorted.
RVC does not brighten in dim settings.
Emergency announcement does not interrupt
audio from other sources.
RVC screen flickering.
Exit "X" button not working on some apps.
Service tire pressure monitor message shown
incorrectly.

Bulletin No.: 23-NA-222
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April, 2024

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.
Turn signal sounds plays incorrectly.
Incorrect pop up for Auto Park Assist cancellation.
USB auto-rejected for corrupt song.
Incorrect translation.