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NHTSA ID Number: 10192033
Manufacturer Communication Number: 21NA064
Summary
This service bulletin provides repair information to correct a customer concern of a Service Heater Soon Message that may turn on with NO DTC Codes set and NO adverse heater performance issues.
1 Affected Product
Vehicle
MAKE | MODEL | YEAR |
CHEVROLET | BOLT EV | 2017 |
Condition
Some customers may comment that a Service Heater Soon message turns on in the instrument cluster while driving the car. The message will go away after the car is turned off and restarted.
In all cases, there is no negative effect on the cabin heater performance and no codes set for the HVAC system. Diagnose the codes first. If the system has codes present, this bulletin does not apply.
Cause
The cause of the condition may be a software anomaly that can cause the message to set when there are no issues existing with the heater.
Correction
Reprogram the HVAC (Heater Ventilation and Air Conditioning) Control Module.
SEOCONTENT-START
Service Bulletin Bulletin No.: 21-NA-064
Date: March, 2021
TECHNICAL
Subject: Service Heater Soon Message May Turn On with NO DTC Codes Set and NO Adverse
Heater Performance Issues
Brand: Model:
Model Year: VIN:
Engine: Transmission:
from to from to
Chevrolet Bolt EV 2017 2017 — — — —
Involved Region or Country North America, GM Korea Company, Middle East
Condition
Some customers may comment that a Service Heater Soon message turns on in the
instrument cluster while driving the car. The message will go away after the car is turned
off and restarted.
In all cases, there is no negative effect on the cabin heater performance and no codes set
for the HVAC system. Diagnose the codes first. If the system has codes present, this
bulletin does not apply.
Cause The cause of the condition may be a software anomaly that can cause the message to
set when there are no issues existing with the heater.
Correction Reprogram the HVAC (Heater Ventilation and Air Conditioning) Control Module.
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.
Note: Carefully read and follow the instructions below.
• 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.
• Turn OFF or disable systems that may put a load
on the vehicles battery such as; interior lights,
exterior lights (including daytime running lights),
HVAC, radio, etc.
• Please verify that the radio time and date are set
correctly before inserting a 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.
Caution: Be sure the VIN selected in the drop down
menu (1) is the same as the vehicle connected (2)
before beginning programming.
Page 2 March, 2021 Bulletin No.: 21-NA-064
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Bulletin No.: 21-NA-064 March, 2021 Page 3
5431207
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.
Important: When programming a module in GM’s new
Vehicle Intelligence Platform, or VIP, the power mode
(ignition) needs to be off or errors may occur. This
involves the 2020 Chevrolet Corvette, Cadillac CT5 and
CT4, as well as the upcoming full-size Chevrolet, GMC,
Cadillac SUVs and Buick Envision. Serial Data
Message Authentication also needs to have the
ignition off.
1. Reprogram the HVAC control module. Refer to
HVAC Control Module Programming and Setup
in SI.
Page 4 March, 2021 Bulletin No.: 21-NA-064
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Bulletin No.: 21-NA-064 March, 2021 Page 5
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 warranty, use:
Labor
Operation
Description Labor Time
2811085* HVAC Control Module
Reprogramming with SPS
Use
Published
Labor
Operation
Time
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.
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 March 17, 2021
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 21-NA-064
Date: March, 2021
https://www.nhtsa.gov/recalls?nhtsaId=10192033
MC-10192033-9999.pdf 102.745KB
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.
- ALL OF THE J2534 PROTOCOLS - This single unit has all of the protocols you need for your OEM J2534 reprogramming and diagnostics including the latest in DoIP and CanFD
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- Supports Current & Earlier Vehicles: Enables diagnostics, programming and other “dealer” functions through OEM applications
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- Expert Product Support: Staffed by technicians who understand vehicle repair and J2534 Pass‑Thru applications to help you with any technical setup questions
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- 【As a multi-protocol Pass-Thru vehicle interface】MaxiFlash Elite is a fully compliant SAE J2534-1 & SAE J2534-2 (March 2006) device. Specially designed to provide users with convenient PC communication and ECU reprogramming capabilities on any modern vehicle diagnostic bus, MaxiFlash Elite offers the most significant features desired by OEM customers: reliability, fast performance and flexibility.
- 【MaxiFlash Elite is an accessory tool for MK908P, MS908S Pro】Autel MaxiSys Elite to program ECUs on specific for BMW and for Benz vehicles, in case you lost the J-2534 programmer. ★★NOTE: J2534 CANNOT directly work with these single devices. After you received the J2534, you HAVE TO send us both the S/N(12 digits) of your tablet MS908S(etc.) and J2534. So, technically, Autel engineers can help you bind J2534 with your devices. The functions are NOT universally compatible. Please send VIN number to 🚘jmxd2022@outlook.com📧🚘 to check compatibility before your order. If need any supports, Please contact us.
- 【Wireless with advanced networking functions】Built-In Wireless with advanced networking functions and data storage. Fast performance ensures reprogramming even the newest controllers & Internet upgradable and updatable. Autel MaxiFlash Elite is compatiable with MaxiSYS MS908S, MaxiSYS MS908S Pro , MaxiSYS MS908CV, MaxiCOM MK908, MaxiCOM MK908 Pro, MaxiSYS Elite, MaxiSYS Elite II and Personal Computer
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- 【Supports simultaneous communication Definition in J2534-1】Autel MaxiFlash Elite Reprogramming Device J2534 supports simultaneous communication definition in J2534-1, running 3 protocols at the same time, which greatly improves reprogramming and diagnostic speed. Embedded with the ARM9 Dual-core processor (clocked up to 500MHz), which further boosts the communicating speed.Rugged aluminum case with non-slip rubber end caps, capable of withstanding harsh environment.
- CUSTOM-DESIGNED FOR USE WITH FORSCAN and recommended by the FORScan Team
- DEALERSHIP-LEVEL DIAGNOSTICS: OBDLink EX supports all Ford protocols, modules, and advanced features of FORScan
- ELECTRONIC SWITCH allows FORScan to access all CAN buses simultaneously and enables advanced functions not possible with “toggle switch” adapters
- MAXIMUM THROUGHPUT -- up to 20 times faster than “toggle switch” adapters
- ROCK-SOLID CONNECTION avoids data corruption and dropped packets
- 🚗[Technical assistance] If you have any installation problems, download the installation manual. Or please contact us at any time. We can provide technical support and help you install software online
- 🚗[Vehicle Coverage] Installation Tips: Please turn off anti-virus software before install. VXDIAG VCX NANO fully compatible with SAE-J2534-1 & SAE-J2534-2. All current and most legacy vehicle protocols: CAN, UART, KW2000, Class2, GM LAN, etc.
- 🚗[Functional] ●USB vehicle-to-PC connectivity●Supports Windows,XP●Supports Windows 7● CE and FCC compliance for hardware●Firmware Updatable. 【SPS】Service Programming System: ◎Passthrough programming on GM past model and Global A vehicles◎Increase reprogramming speed 20-70% and get ready to service new models.
- 🚗[GDS] Global Diagnostic System: ◎New Diagnostic Application Software required for all GM Global Architecture (Global A) Vehicles. ◎GDS & GDS2 is software which runs on a specific PC. Updates received via TIS2Web.
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- 【J2534 REPROGRAMMING TOOL】The RLink Lite functions as a J2534 pass-thru programmer to achieve OEM programming and diagnostics. Compliant with three major automotive industry standards D-PDU/J2534/RP1210, and latest DoIP/CAN/CAN FD, the RLink Lite ensures extensive vehicle coverage and speedy diagnostics.
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Last update on 2024-07-16 / Affiliate links / Images from Amazon Product Advertising API
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