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NHTSA ID Number: 10198891
Manufacturer Communication Number: 21NA128
Summary
This technical bulletin provides repair information to correct a customer concern of MIL Illuminated- ECM Update for P026C, P20EE, or P11D5.
4 Affected Products
Vehicles
MAKE | MODEL | YEAR |
CHEVROLET | SILVERADO 2500 | 2021 |
CHEVROLET | SILVERADO 3500 | 2021 |
GMC | SIERRA 1500 | 2021 |
GMC | SIERRA 2500 | 2021 |
Condition
Some customers may comment that the MIL is illuminated.
Some technicians may find DTC P026C, P20EE, or P11D5
Cause
The cause of the condition may be a software anomaly
Correction
Please check for any open campaigns and perform as necessary:
• If campaign N212336570 or campaign N212331790 applies to this VIN and is open, please close the campaign. Doing this will install the latest ECM update that includes P20EE, P026C, and P11D5 enhancements.
• If the campaign is not released for this VIN or if the campaign is already closed, please check for an ECM update.
Reprogram the Engine Control Module (ECM).
SEOCONTENT-START
Service Bulletin Bulletin No.: 21-NA-128 Date: June, 2021 TECHNICAL Subject: MIL Illuminated- ECM Update for P026C, P20EE, or P11D5 Brand: Model: Model Year: VIN: Engine: from to Transmission: from to Chevrolet Silverado 2500HD/ 3500HD 2021 2021 Before 1GC4YTEY5MF261413 Equipped with 6.6L Engine (RPO L5P GMC Sierra 2500HD/ 3500HD 2021 2021 Equipped with 6.6L Engine (RPO L5P Involved Region or Country North America. Israel, Palestine, Middle East, Australia and New Zealand. Additional Options (RPOs) Condition Some customers may comment that the MIL is illuminated. Some technicians may find DTC P026C, P20EE, or P11D5 Cause The cause of the condition may be a software anomaly Correction Please check for any open campaigns and perform as necessary: • If campaign N212336570 or campaign N212331790 applies to this VIN and is open, please close the campaign. Doing this will install the latest ECM update that includes P20EE, P026C, and P11D5 enhancements. • If the campaign is not released for this VIN or if the campaign is already closed, please check for an ECM update. Reprogram the Engine Control Module (ECM). 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 12 V 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. 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 June, 2021 Bulletin No.: 21-NA-128 5743643 5644477 Bulletin No.: 21-NA-128 June, 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 section of the bulletin. 1. Reprogram the Engine Control Module. Refer to K20 Engine Control Module: Programming and Setup in SI. Page 4 June, 2021 Bulletin No.: 21-NA-128 5644478 5431209 Bulletin No.: 21-NA-128 June, 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 SPS Warranty Claim Code on job card for warranty transaction submission. Warranty Information For vehicles repaired under the Emission coverage, use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information. 2 years/24,000 miles Federally and 3 years/50,000 miles in California. Labor Operation Description Labor Time *2887368 P026C/P20EE ECM Reprogramming Update 0.3 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. 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 May 28, 2021
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 21-NA-128
Date: June, 2021
https://www.nhtsa.gov/recalls?nhtsaId=10198891
MC-10198891-9999.pdf 103.675KB
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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- 【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.
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- 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.
- 🚗[Efficient&Convenience] Quick access to vehicle data for maintenance or management reports.Quickly attaches to vehicle's diagnostic connector. Mixed fleet capabilities with broad protocol support.May be used with desktop PC or laptop. make sure your computer at least 4GB.Tech2win software only installed on 7 32bit computer and on physical system.Please download the latest vxmanager from vxdiag official website.
- 【ALL-IN-1 REPROGRAMMING TOOL】With its exceptional compatibility, TOPDON RLink Lite J2534 pass-thru programmer and enhanced VCI seamlessly conducts original equipment-level diagnostics, programming, and coding jobs, achieving OE-level diagnostics across various vehicle models with a single device. Note: TOPDON RLink Lite is Window-only, not compatible with Mac.
- 【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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