Bulletin No.: 24-NA-136

Service Bulletin

Date: August, 2024

TECHNICAL
Subject:

Radio Software Version is W38E-174.4.1-M170-SQBR5-180.5
This Service Bulletin supersedes PIT6135. Please discard PIT6135.

Brand:

Model:

Model Year:
from

to

Cadillac

XT4

2024

2024

Chevrolet

Colorado

2024

2024

GMC

Canyon

2024

2024

VIN:
from

to

—

—

Engine:

Transmission:

—

—

Involved Region or Country

North America

Additional Options (RPOs)

Equipped with Infotainment System 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

A new radio software update, version is W38E-174.4.1-M170-SQBR5-180.5, 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.
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 contained in this release
may include:
Camera:
• The screen may go black when in a camera view
• Camera views may overlap
• Cargo Bed Camera is not mirrored
• Cargo Bed Camera may not be available
• False pedestrian notification on Rear View Camera
• Intermittently the Rear View Camera will show the
no camera icon
• May not be able to exit the camera app because
there is no menu or X button
• Rear View Camera may not work properly with
Quick Start Up on
• Rear View Camera always on

Copyright 2024 General Motors. All Rights Reserved.

• Rear View Camera will not work properly
• The camera may flicker
• The cameras may not work after a cold boot
• The heated seat screen may overlay the Rear
View Camera
• The Parking Assist may not show indicators
• The Rear View Camera may be slow to load
• The side camera angles may be incorrect
• When the radio loses the speed signal the camera
view will go away
• While using Automated Park Assist there may not
be a camera view
• Delayed camera screen
• Blank screen with grid lines
• Rear View Camera image freezes for a short
period
• Green screen

Page 2

August, 2024

• Front View Camera has Rear View Camera
viewing options
Display:

Bulletin No.: 24-NA-136

• The vehicle ahead green telltale may overlap with
the speed info
Stability:

• "Your Audio will be Muted" message for Teen
Driver doesn't display

• Lagging

• B1D73-04 may set in the radio, along with DTCs in
the BCM for the VCD

• Radio may reset while the camera views keep
being switched

• Black screen

• Slow bootup time

• Drive mode titles and icons overlap

• Maps and/or audio app may crash

• Icon changes
• Not able to switch from Flow theme to V series
theme

• Radio may not fully shut down, but looks off

Audio:
• Audio distorted

• Pop-up message may not have icons

• Audio pauses during projection

• Porch view may stop working

• No audio

• Radio display may not dim at night

• Possible noise on startup

• SWC audio source change does not show on VCD

• Two sources playing audio at the same time

• The screen may be distorted when shifting from
Reverse to Drive

• When switching to the MaxPower drive mode the
audio may stop

• Volume bar listed as Navigation instead of Voice
for OnStar call

• While a traffic announcement comes in while using
voice recognition the audio bar name will show
Announcement

• When switching from Driver to Guest, "tseuG"
shows on the status bar
• User may see "Update Failed. See dealer to
restore system" OR Black Screen
• Brightness adjustment may not change screen
brightness
• Rear HVAC control screen may be brighter than
set
• Radio hard buttons may not work
Cluster:
• Audio source list stuck on display

• Customer may hear turn signal chime/clack without
turn signal active
• No audio after phone call
• At startup, Bluetooth audio is too loud
• No Bluetooth audio after starting Nav. route
Phone:
• Removing the Text play buttons when Alexa is the
assistant
• Text messages might not be seen on display

• Audio unavailable message

• When CarPlay is connected you can't access
Alexa

• Auto Start Stop icon overlaps speed when there is
a pop-up message

• With CarPlay the first phone call of every ignition
cycle will cause CarPlay to disconnect

• Blank cluster display

• Voice recognition pass through to the connected
phone may not work

• Cluster screen may freeze
• Map view may be slow to load
• DIC may overlap with gauge
• Navigation information may not show in Zone 3
• Cluster flickers

• When trying to exit android auto, display goes
black
• CarPlay disconnects when radio is off and
passthrough voice recognition is activated

• Android icon pops up while switching cluster views

• Phone app will not launch while wired android auto
is connected

• Prevent ellipsis from showing on cluster

• Delete paired device confirmation appears twice

• Selected cluster view may not be saved after
vehicle shutdown

• Apple CarPlay and Android Auto will disconnect
after about 5 minutes

• Best fuel economy is blank

• When Bluetooth is not the audio source there is no
audio chime for incoming text messages

• Audio message appears over gauges when
creating new user profile

Bulletin No.: 24-NA-136

August, 2024

Page 3

• Wired Android Auto might reconnect instead of
Bluetooth

• When updating from R3 to R5 any custom pages
will be lost

• Bluetooth may not reconnect

• Display goes black at 21 minutes remaining in
update

• Voice Recognition pass through has no audio
response
• An incoming Bluetooth call ringtone might have a
sound when answering
Virtual Controls:
• Customer will be unable to rename garage door
• HVAC virtual controls might not work

• Wrong firmware version could be displayed in
settings
• "LCDD Data Provisioning failed" message after
attempting provisioning
• The LCDD write can take too long
Radio:

• May not be able to exit the Virtual Controls app

• Battery drains from radio of 3A

• The Virtual Controls app can be opened with the
radio off

• Customer may see an Error 302 causing them to
have to log in every 30 minutes

• The Virtual Controls app may not open

• Radio may not leave Quick Start Up mode and go
to off

• Headlight controls may be covered by HVAC
controls
• Ride height adjustment may not work
• Virtual controls, such as headlights, may not work
Other Apps:
• The MyBrand app may not launch

• Radio may not turn off when RAP is cancelled
• Radio thinks the vehicle is in Drive so customer is
unable to access pages where the vehicle must
be in Park