23-NA-053

Bulletin No.:
Service Bulletin
Date:
23-NA-053
March, 2023
TECHNICAL
Subject:
Radio Software Version U168 Update
This bulletin supersedes PIT5914. Please discard PIT5914.
Brand:
Model:
Model Year:
from
Enclave
Buick
Encore
VIN:
to
from
to
—
—
—
—
Engine:
Transmission:
—
—
2021
2020
Verano
2020
2020
CT6
Cadillac
XT4
XT5
2020
2020
XT6
Blazer
Camaro
Cruze
Chevrolet
Silverado
1500
2020
2020
—
—
—
—
Silverado
2500HD/
3500HD
Traverse
2021
Acadia
2021
Sierra 1500
GMC
Sierra
2500HD/
3500HD
2020
2020
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
Additional Options (RPOs)
Equipped with Infotainment System RPO IOS, IOU or IOT
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 U168, 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.
Copyright 2023 General Motors LLC. All Rights Reserved.
Page 2
March, 2023
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 “U” 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 U168 (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.
U168 Most Notable Improvements
Most notable improvements contained in this release
may include:
Apps
• When opening the trailer app, it may open to a
black screen
• Trailer Tire pressure monitoring system support
tire pressures up to 1020 Kpa (148 PSI)
Settings
• The wifi password minimum length has increased
from 8 to 12 characters
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
Bulletin No.: 23-NA-053
charged 12V 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
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.
Bulletin No.: 23-NA-053
March, 2023
Page 3
Caution: Be sure the VIN selected in the drop down
menu (1) is the same as the vehicle connected (2)
before beginning programming.
5743643
Important: If the vehicle VIN DOES NOT match, the
message below will be shown.
5877000
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March, 2023
Bulletin No.: 23-NA-053
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. Inspect the current radio software version.
Navigate to Settings -> About -> Build Number ->
Information “i” to view and verify the software
version.
• If the build number is U168 or greater, this
bulletin does not apply.
• If the build number is less than U168, proceed
to Step 2.
Tip: Once the USB update is initiated, there is no need
to monitor the progress.
If an Infotainment over the air (OTA) update is present
in the radio Updates menu, check for and reference any
applicable field action bulletins first.
If the radio displays Conditions are not ideal, there are
many reasons this can display but be aware that stable
battery voltage is critical during programming. Any
fluctuation, spiking, over voltage or loss of voltage will
interrupt programming.
2. Install the software update via USB. Refer to A11
Radio: Programming and Setup in SI.
Bulletin No.: 23-NA-053
March, 2023
Page 5
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.
3. Record the SPS Warranty Claim Code on the job
card for warranty transaction submission.
Page 6
March, 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
2889418*
Description
Labor Time
Reprogram and update radio
to U168 VIA SPS/USB
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.
Bulletin No.: 23-NA-053
Bulletin No.: 23-NA-053
March, 2023
Page 7
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 22, 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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