NHTSA ID Number: 10178271
Manufacturer Communication Number: 20NA112
This technical bulletin advises the technician to validate the code and reset if found the cause of the customers concern.
18 Affected Products
Copyright 2020 General Motors LLC. All Rights Reserved.
Service Bulletin Bulletin No.: 20-NA-112
Date: June, 2020
Subject: MIL Illuminates While Descending a Grade with the Transfer Case in 4wd Low – DTC
Model Year: VIN:
from to from to
Chevrolet 2018 2020 – – L86 MF6
Involved Region or Country North America
Some customers may comment that MIL illuminates while descending a grade with the
transfer case in 4wd Low.
Some technicians may find P0776 (Transmission Control Solenoid Valve 2 Stuck Off) set
in the Transmission Control Module (TCM).
Cause This condition may be caused by an anomaly within the TCM calibration.
There is not a correction. No repairs should be attempted as replacement of components
will not resolve the condition. The customer should be advised to use 4wd high in these
No parts are required for this repair.
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 Description Labor Time
8481008* Code Verification and Code Reset 0.3 hr
*This is a unique Labor Operation for Bulletin use only.
Modified Released May 29, 2020
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
WE SUPPORT VOLUNTARY
1 Associated Document
Bulletin No.: 20-NA-112
Date: June, 2020
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.
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.
- [Vehicle Coverage] One device Compatible for Ford and Compatible for Mazda, Support vehicle till 2018 year. (Can't Support Ford F-150 ). Support Automatic Vehicle Recognition.
- [ECU Functions] Programming & Installation of new ECUs (PCM, ABS, Instrument Cluster, Air Bag, Fuel Pumps, etc.). Live Data-stream with Recording & Playback Functions for Main ECUs. New Software Re-flash for Existing ECUs.
- [Functional] Connect via USB. Support Read & Clear Diagnostic Trouble Codes (DTCs); Set, Adjust or Remove Speed Governors; Steering Angle Resets, Guided Fault Finding&All Other Dealer Functions.
- [Update] Update by CD with Unlocked Firmware. ★Please Note: If you have any problem when you install the software, please feel free to contact us, our technology team will provide customers service to help you solve the problem. Multilingual: Support English/German/French/Italian/Spanish/Dutch/Slovenian/Finnish/Danish/Norwegian/Portuguese(European)/Portuguese(Brazil).
- 🚩Firmware support update online. If you have any problem, please fell free contact to us, we will help you fix it by TeamViewer or message support.
- 👍【Works with Autel MK908, MS908(S/Pro), MK908P, MaxiSys Elite】Autel J2534 work with these tools to program ECUs on specific BMW/ BENZ for specific functions. ★★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. If need any supports, contact us via: 🚘[email protected] outlook.com🚘 !
- 👍Fully compatible with both SAE J2534-1 and J2534-2 reprogramming standards and performs standard Pass Thru J2534 functionality. To check compatibility, please contact🚘[email protected] outlook.com🚘 directly for satisfaction-guaranteed support!
- 👍Compatible with Toyota Techstream, Volvo VIDA, Honda HDS, Jaguar-Land Rover IDS and BMW 3G for OEM diagnostics. To check compatibility, please contact 🚘[email protected] outlook.com🚘 directly for satisfaction-guaranteed support!
- 👍Built-In Wireless with advanced networking functions and data storage. Fast performance ensures quickly reprogramming even the newest controllers & Internet upgradable and updatable.
- 👍Attention: 1. After you ordered and received the J2534, please send us both of the S/N(12 digits, at the back of the device) of the J2534 and your MK908(P) /MS908S (Pro)/ Maxisys Elite to us to bind the two device together. 2. The functions are NOT universally compatible. Please send VIN number to 🚘[email protected] outlook.com🚘 to check compatibility before your order.
- Advanced Diagnostic Scanner for ECU Programming : MK908P has been designed to perform some of the most complicated engine diagnostics and reprogramming in BMW and Mercedes Benz. With the jbox/J2534 VCI or BMW Ethernet Cable, you can edit the cars performance data, like adjusting RPM, fuel injection, etc. A professional car diagnostics scanner to save time/effort on repairs. Form some of the most complicated engine diagnostics and reprogramming in BMW and Mercedes Benz
- Comprehensive Features : Besides Coding and ECU programming functions, the scan tool supports reprogram keys, Bi-directional control, active test, ABS bleeding, complete capabilities for codes, live data, actuation tests, adaptations, prints out recorded data with Wi-Fi. Warm tips Benz-14 & Chang'an-3 Adapters only for UK version, not US version
- User Friendly : The live data stream displayed the real time PID data from ECU and the displayed data included analog inputs and outputs, digital inputs and outputs and system status information broadcast. The graphic display greatly improved the readability and understandability of above parameters. This is definitely a perfect scan tool for enthusiasts interested in knowing how their car is running
- Easy to Operate : The hardware can equal to a best rank android tablet in the market and that made the whole diagnostic procedure more quickly and precisely. Maxisys platform, cloud-based Maxisys provide a large amount of data about the diagnosis and repair advices, that’s really helpful, whenever you encounter problems, you can find solutions from it
- Compatible with Some Add-ons : Combination with Oscilloscope Maxi Scope MP408 and Digital Inspection Cameras MV108, the power of this tool is amazing and the detail you receive about every component of the vehicle makes pinpointing a problem painless. Affordable combination of MS908P and TS601 supports TPMS programming, which turns into a powerful diagnostic tool.
- VCX is designed on the basis of the latest automotive international standards so that it can support many professional automotive diagnostic applications
- WIFI Version VXDIAG VCX Nano compatible for TOYOTA and Lexus, support both USB connection and WIFI connection, support latest version software, Compatible with varieties protocols. can be very easy to connect various automotive bus to a PC
- OS support both WINDOWS XP and Windows 7, Software support multi-languages: Chinese, English, French, Italian, Spanish, German, ec
- You can download the vxmanager online, if you have any license problem please send us the serial number to extend the license
- One year warranty. Please contact us via order center if you have any problem with software installation
- 🚗 [The 2021 Autel MaxiSys Ultra]: The brand new Autel 2021 MaxiSys Ultra is the most high-end automotive scanner of the Autel production line and has won the popular of mechanics and media. The sophisticated features tailored for pro mechs to cope with complex issues. Tuning the engine system, flashing the hidden functions for luxury vehicles, changing the ECU module, etc. Each technician can access the depths of the ECU module to uncover the vehicle's potential through guidance.
- 🚗 [Intelligent Diagnostics]: As the most ambitious tablet scanner developed by Autel, The Autel MaxiSys Ultra is designed to diversify the knowledge pool of repairers, simplify the diagnostic process and bring out the maximum potential of each technician. The 2021 newly added Repair Assist and TSB can consolidate and prioritize all detected fault codes and present in topology diagram. And also, it provides repair tips, videos, and related cases for your reference.
- 🚗 [ECU Programming and Coding ]: Speaking of the ECU coding & J-2534 programming, the first thing come to mind maybe is: These only can be done by pros. But now, you’re the pro! Thanks to the compatibility with many major protocols, ultra allows you to easily access deep into the ECU to find and solve problems. Over 36 service functions have been packed into the scanner to fix the problems. The bi-directional control can sort out the hidden problems.
- 🚗 [Solid Hardware and VCMI]: With a winning combination of solid hardware and software, the Autel MaxiSys Ultra ensures you a smooth and efficient diagnostic experience. Android 7.0 OS, Samsung octa-core processor, 4GB RAM & 256GB memory, 12.9 inch TFT-LCD touch screen, front & rear cameras, 18000mAh 3.8 V battery, etc. The new MaxiFlash VCMI functions as a 4-channel oscilloscope, waveform generator, multimeter, and CAN BUS tester.
- 🚗【2021 Newest, Updated of MaxiSys MS908S Pro】: Unlike MaxiSys MS908S pro, MK908P has no IP limitation, making itself a worldwide popular auto diagnostic scanner. It is compatible with over 100,000 car models, enjoys 99% compatibility in car market. Updated from MS908S pro, MK908P was equipped with advanced hardware from the Samsung Exynos Hexa-core processor and Android 4.4.2 OS for quick and comfortable car diagnostics. In addition, except for English, MK908P supports another 14 languages.
- 🚗【Advanced J2534 ECU Programming, Perfect for Benz/BMW】: Autel diagnostic scanner MK908P comes with a SAE J2534-1 & -2 compliant Pass-Thru interface, which allows you to program ECUs for Benz/BMW . MK908P helps to update the existing software/firmware of your vehicles, and fix software-controlled drivability & emission issues. Sounds complicated, but this function is easy to do and tech supports are 24 hours here for help. Any questions, contact [email protected]outlook.com or send Amazon message.
- 🚗【Same as Maxisys Elite, Powerful ECU Coding】: With just the same function as Autel Maxisys Elite, upgraded of MS908S PRO, MS908E, MK908, Autel scanner MK908P is much more cost-effective. OE-level obd2 scan tool MK908P supports coding functions on 99% vehicle makes. The online coding is compatible with VW & Audi & Porsche & Benz/BMW, and its online configuration for Renault is unique among the diagnostic industries.
- 🚗【30+ Service Functions, All-in-one Auto Scanner】: J2534 reprogramming tool MK908P enjoys 30+ professional maintenance functions like Oil Reset, EPB, BMS, SAS, DPF, TPMS, and IMMO Service, etc. All these 30+ service functions are compatible for 99% cars in the market. Same as expensive snap on scanners, Autel 908P Provides with OE-level full-systems diagnosis to include ABS, SRS, Engine, Transmission, Brake System, Emission System, Fuel system, Light system, Wiper System, etc..
- 🚗【Wider Vehicle Coverage, Best Choice for Repairing Shops】: OBD2 scanner Autel MK908P has wider vehicle coverage for more than 80+ US, Asian and European vehicle makes, ideal for experienced mechanics and garage to do professional repairing and maintenance. With luxury car makes coverage, basic diagnostic functions and most service functions of MK908P are compatible with Lamborghini, Ferrari, Aston Martin and Maserati etc.
- [J2534 Programming and Coding]: The Autel MK908P has featured both SAE J2534-1 and J2534-2 reprogramming standards, which means it allows you to reprogram emissions-related controllers and, in some cases, diagnose vehicles with factory functionality. And it can conduct OE-level diagnostic for Toyota Techstream, Volvo VIDA, Honda HDS, Jaguar-Land Rover IDS, and BMW 3G. Compare with Autel Elite and other tablet scanners, the MK908P has a higher cost performance.
- [Active Test]: The Active Tests, also known as Bi-directional control, empowers you to command the ECUs to perform in-depth tests in specific systems and helps you track down the problems. E.g., the MK908P can work as a controller to roll up and down the windows and help you locate whether the problem is with window controllers or window motors.
- [30+ Special Function & Full-System Diagnosis]: The Full-System Diagnosis supports you in diving into each individual system and finding out the problems without missing out any tiny details. Here are the systems that MK908P can pay a visit: Engine, Transmission, Airbag, ABS, ESP, TPMS, Immobilizer, etc. More than 30+ functions have been packed on MK908P to help you deal with various types of issues. Such as oil reset, EPB, TPMS, BMS, brake bleeding, IMMO, SAS, DPF, etc.
- [Worldwide Vehicle Coverage]: The MK908P is tailored for workshops and pro mechs to help you with the business you build with your bare hands. The worldwide vehicle coverage gives you the confidence to face a variety of vehicle models and brands. It has compatible with most Asian, EU, and US brands. With later updates, it will also support you to run thorough diagnostic on many luxury brands such as Lamborghini, Ferrari, Aston Martin, etc.
- [Solid Hardware]: The solid hardware will never drop the ball. Android 4.4 OS, hexa-core processor, KitKat OS, 2GB RAM and 64GB ROM, 10.1" LED screen, 20+ adapters and cables. As for the warranty, we would stick to the old rules, 1 year free update, 12 months warranty, 30 days free refund, 24 hours after-sales service. Please feel free to come to us via e-mail: [email protected]outlook.com
- 🚗【2021 Newest. Key Programming + IMMO Function】The most advanced and smart key programming tool that combines the most powerful IMMO and programming functions with OE-level diagnostics and advanced service functions in one Android based 10.1-inch touchscreen tablet, it helps perform complete key programming quickly. Please send VIN to⭐Autelonline @ outlook . com⭐ to check compatibility.
- 🚗【Advanced XP400 Programmer】XP400 is to read transponder data (especially Benz infrared smart key), clone and generate exclusive keys, read/write on-board EEPROM data, etc. IMMO application provides Smart Mode and Expert Mode to guide technicians performing IMMO related functions, including Key Learning, Remote Control Learning, Remote Control Add, etc
- 🚗【ADVANCED IMMO + J2534 ECU programmer】Immobilizer is also known as immo box which is to auto part that recognizes the vehicle key directly. MaxiFlash specially designed to provide users with convenient PC communication on any modern vehicle diagnostic, and offer the most significant features desired by OEM customers: reliability, fast performance and flexibility. The working range for BT communication is about 210 feet (70 m). ▲The J2534 Can't Program ECU With IM608▲
- 🚗【ACTIVE TEST + ECU CODING + 30+ RESET SERVICE】Bi-directional control of the ECM is useful in determining whetherthe ECM responds to a command well. And Auto VIN Identification, ECU Coding are available for IM608. Most useful service including: Oil Reset Service/ EPB Service/ BMS Service/ SAS Service/ DPF Service etc.Powerful OE level diagnostics for more than 80 US, Asian and European makes and models.
- 🚗【(US ONLY) 1 YEAR FREE UPDATE + PERMANENT After-Sales SERVICE】▲IM608 just can be used in US. Please don't switch the IP or the device will be locked! IM608 comes with 1 Year free updates. 𝙎𝙪𝙥𝙥𝙤𝙧𝙩 𝙫𝙚𝙝𝙞𝙘𝙡𝙚𝙨 𝙪𝙥 𝙩𝙤 𝟮𝟬𝟭𝟵, 𝟮𝟬𝟮𝟬 𝙖𝙣𝙙 𝙨𝙤𝙢𝙚 𝙪𝙥 𝙩𝙤 𝟮𝟬𝟮𝟭
- 🎄【BEST SCANNER FOR LOCK SMITH】Autel MaxiIM IM608 is the most advanced and unique all in one key programming and diagnostic tool that combines advanced key programming, all systems diagnostics, and advanced services. It is equipped with XP400 key programmer and MaxiFlash ECU programmer to provide complete coverage of IMMO and programming functions.
- 🎄【BEST IMMO AND KEY PROGRAMMER】Autel key programmer IM608 enjoys the easiest way to read/write various key chips with 100% successful rate. Smart Mode and Expert Mode are provided to encrypt keys, add keys, change keys, and generate keys for 99% cars in the market with no difficulty. Key Learning, remote control learning, remote control add, etc. could all be done with IM608.
- 🎄【MOST COST-EFFECTIVE SCANNER WITH 31+ SERVICE】Autel locksmith tool IM608 is the unprecedented key programming and diagnostic tool that you ever wanted. 31 maintenance functions include Oil Reset, EPB, TPMS, BMS, Brake Bleed, DPF, Injector, SAS, Suspension, Throttle, WIN DR ROOF, Seats, Odometer, ABS/SRS and more, same as Maxicom MK908P and Elite.
- 🎄【ADVANCED ECU CODING & BI-DIRECTIONAL CONTROL】Targeting at professional mechanic, Autel IM608 has advanced coding function to help you easily reprogram adaptive data for certain components. Bi-directional control helps figure out whether a specific subsystem or component goes well. This function may appear as Actuators, Actuator Test, or Function Tests, all these could be completed in several minutes.
- 🎄【XP400 PROGRAMMER & WIRELESS J2534 VCI】XP 400 key programmer, worth 700$, is used to read transponder data (especially Benz infrared smart key), clone and generate exclusive keys, read/write on-board EEPROM data. Equipped with XP400 key programmer and MaxiFlash ECU reprogrammer, IM608 performs IMMO Add Key, Keys Lost and Key Learning for 3rd generation Benz.
- VXDIAG VCX 2 in 1 works for both Ford and Mazda, support Ford and Mazda Diagnose and Programming.(Please download the latest vxmanager from vxdiag official website. Use new vxmanager to update firmware and driver and then update your device authorization.)
- Worth to own: Support J2534 protocol, this device actually works faster than Obdlink MX and ELM327 devices with Forscan, it can also works with FJDS license for programming. This is a great alternative to buying an expensive VCM2 for programming modules
- Support vehicle till 2019 year（Not works for FORD F150,F250,F350,F450,F550,F650,F750 before 2010）,Support Multi-Languages
- VXDIAG VCX NANO is an OEM diagnostic interface for the vehicles of Ford and Mazda. It can be compatible with OEM software of Ford IDS and Mazda IDS
- Full Technical Support Online: Firmware support update online. For software installation, you can feel free to contact us via amazon message, our engineer will provide online support by teamviewer or video
Last update on 2021-05-13 / Affiliate links / Images from Amazon Product Advertising API
Last update on 2021-05-13 / Affiliate links / Images from Amazon Product Advertising API