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NHTSA ID Number: 10205585
Manufacturer Communication Number: 21NA266
Summary
This service bulletin provides a repair procedure to correct a customer concern of a Service Vehicle Soon Light Illuminated with DTC P0534 Set.
2 Affected Products
Vehicles
MAKE | MODEL | YEAR |
CHEVROLET | BOLT EUV | 2022 |
CHEVROLET | BOLT EV | 2022 |
Condition
Some customers may comment on the Service Vehicle Soon light being illuminated. Technicians may find DTC P0534 set. This condition may occur without a customer concern of A/C performance and without the presence of any leaks in the system.
Cause
The cause of the condition may be a glitch in the K114B Hybrid/EV Powertrain Control Module 2 software that sets DTC P0534.
Correction
Check the function of the A/C System and for the presence of visible leaks in the system:
- If leaks are detected, follow the service manual diagnostics to repair and update the K114B Hybrid/EV Powertrain Control Module 2 with the latest software.
- If no leaks are detected and the A/C system is functioning properly, update the K114B Hybrid/EV Powertrain Control Module 2 with the latest software.
SEOCONTENT-START
Service Bulletin Bulletin No.: 21-NA-266
Date: November, 2021
TECHNICAL
Subject: Service Vehicle Soon Light Illuminated with DTC P0534 Set
Brand: Model:
Model Year: VIN: Engine: Transmission:
from to from to
Chevrolet
Bolt EV
2022 2022 — — — —
Bolt EUV
Involved Region or Country North America, Middle East, Brazil, GM Korea Company
Condition
Some customers may comment on the Service Vehicle Soon light being illuminated.
Technicians may find DTC P0534 set. This condition may occur without a customer
concern of A/C performance and without the presence of any leaks in the system.
Cause The cause of the condition may be a glitch in the K114B Hybrid/EV Powertrain Control
Module 2 software that sets DTC P0534.
Correction
Check the function of the A/C System and for the presence of visible leaks in the system:
• If leaks are detected, follow the service manual diagnostics to repair and update the
K114B Hybrid/EV Powertrain Control Module 2 with the latest software.
• If no leaks are detected and the A/C system is functioning properly, update the K114B
Hybrid/EV Powertrain Control Module 2 with the latest software.
Service Procedure
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 12V jumper or booster pack disconnected
from the AC voltage supply. DO NOTconnect 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.
• 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.
Page 2 November, 2021 Bulletin No.: 21-NA-266
• 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.
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
Bulletin No.: 21-NA-266 November, 2021 Page 3
5644477
5431207
Page 4 November, 2021 Bulletin No.: 21-NA-266
Important: Techline Connect and TIS2WEB screens
shown above.
Important: If the same calibration/software warning is
noted on the TLC or SPS 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. No further action is required. Refer to
the Warranty Information section of this bulletin.
1. Reprogram the K114B Hybrid/EV Powertrain
Control Module 2. Refer to K114B Hybrid/EV
Powertrain Control Module 2: Programming and
Setup in SI.
5644478
Bulletin No.: 21-NA-266 November, 2021 Page 5
5431209
Note: The screenshots above are 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 SPS Warranty Claim Code (WCC) screen shown
above on the job card. Refer to callout 1 above for the
location of the WCC on the SPS screen.
2. Record the SPS Warranty Claim Code on the job
card for warranty transaction submission.
Warranty Information
For vehicles repaired under the Powertrain coverage,
use the following labor operation. Reference the
Applicable Warranties section of Investigate Vehicle
History (IVH) for coverage information.
Labor
Operation
Description Labor Time
2888298*
K114B Hybrid/EV Powertrain
Control Module 2
Reprogramming with SPS
for Service Vehicle Soon
message
0.4 hr
*This is a unique Labor Operation for bulletin use only.
Important: To avoid warranty transaction rejections,
carefully read and follow the instructions below:
• The Warranty Claim Code must be accurately entered
in the “SPS 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 “SPS Warranty Claim Code” field of the
transaction, otherwise the transaction will reject. It is
best practice to enter the FINAL code provided by
SPS/SPS2.
Page 6 November, 2021 Bulletin No.: 21-NA-266
Warranty Claim Code Information Retrieval
If the SPS Warranty Claim Code was not recorded on
the Job Card, the code can be retrieved in the SPS
system as follows:
1. Open TLC/TIS on the computer used to program
the vehicle.
2. Select and start SPS/SPS2.
3. Select Settings.
4. Select the Warranty Claim Code tab.
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 November 17, 2021
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 21-NA-266
Date: November, 2021
https://www.nhtsa.gov/recalls?nhtsaId=10205585
MC-10205585-9999.pdf 148.955KB
Reprogramming
GM Diagnostic/Programming (TIS2Web)
Approved J2534 Device with TIS2WEB can reprogram 1996 and later All GM Modules.
To obtain the latest electronic controller calibration information for your vehicle, go to https://tis2web.service.gm.com/tis2web and enter the vehicle's 17 character Vehicle Identification Number (VIN) and select 'Get CAL ID’.
You can then compare the latest part number with the actual number installed on the vehicle to determine if a reprogram is needed.
The Service Programming System (SPS) application is part of the TIS2Web system. To program an ECU, the SPS application must communicate with the vehicle control modules using the proper J2534 programming interface tool.
The following are the supported interface tools:
The Tech 2 supports model years 1996 and beyond. With the addition of the CAN Diagnostic Interface (CANdi) module, Tech 2 is fully backward compatible with current Tech 2 functionality and operates transparently when diagnosing non-CAN-equipped vehicles.
Servicing the next generation Global A vehicles will require the diagnostic software, GDS2, Global Diagnostic System 2 running on a local PC device while the MDI is connected to the vehicle. The GM MDI is the Global Diagnostic tool for future vehicles starting with Global A vehicles.
The GM MDI was introduced in the fall of 2007 for Pass-Thru programming and offers faster programming speed. It can be used to perform Pass-Thru programming on all vehicles built since 1996 and into the future. Click here to view a list of GDS supported vehicles.
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