Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features – 2021 Chevrolet Tahoe & GMC Yukon

July 29, 2021 NHTSA CAMPAIGN NUMBER: 21V579000

Brake System Calibrated Incorrectly

Overall braking performance may be compromised, increasing the risk of a crash.

 

NHTSA Campaign Number: 21V579

Manufacturer General Motors, LLC

Components SERVICE BRAKES, HYDRAULIC

Potential Number of Units Affected 2

 

Summary

General Motors, LLC (GM) is recalling certain 2021 Chevrolet Tahoe and GMC Yukon vehicles. Dealer service technicians may have calibrated the brake system incorrectly, affecting Electronic Stability Control (ESC) , traction control, Anti-Lock Brake System (ABS), and braking while towing a trailer.

 

Remedy

Dealers will recalibrate the brake system control module, free of charge. Owner notification letters were mailed on August 27, 2021. Owners may contact Chevrolet customer service at 1-800-222-1202; GMC customer service at 1-800-462-8782. GM’s number for this recall is N212340970.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

 

Check if your Vehicle has a Recall

 


Condition

General Motors has decided that a defect which relates to motor vehicle safety exists in one 2021 model year Chevrolet Tahoe and one 2021 model year GMC Yukon. Dealer service technicians may have programmed these vehicles’ brake system control modules (BSCM) with incorrect calibrations. This condition may adversely impact the operation or sensitivity of certain vehicle systems, including electronic stability control, traction control, and anti-lock braking, or cause the loss of trailer braking while towing. Stability control, traction control, and anti-lock braking may not perform as intended in certain low traction conditions. Braking performance will be reduced when towing a trailer equipped with trailer brakes. There may be increased risk of a crash.

 

Correction

Dealers will reprogram the brake system control module with the correct software and calibration data files.

 

Parts

No parts are required for this repair.

 


Frequently Asked Questions (FAQs) for Safety Recall N212340970
Incorrect Software Calibration May Affect Certain Driving Assist Features

 

These questions and answers are being provided to help GM dealers respond to inquiries from involved vehicle owners about the Safety recall identified above.

 

Q1) Which vehicles are involved?

One 2021 model year Chevrolet Tahoe and one 2021 model year GMC Yukon

 

Q2) What is the issue or condition?

Dealer service technicians may have programmed these vehicles’ brake system control modules (BSCM) with incorrect calibrations.  This condition may adversely impact the operation or sensitivity of certain vehicle systems, including electronic stability control, traction control, and anti-lock braking, or cause the loss of trailer braking while towing.

 

Q3) What symptoms may be experienced?  What warning signs may be associated with the issue or condition described?

Stability control, traction control, and anti-lock braking may not perform as intended in certain low traction conditions.  Braking performance will be reduced when towing a trailer equipped with trailer brakes.

 

Q4) What is the remedy/repair?

Dealers will reprogram the brake system control module with the correct software and calibration data files.

 

Q5) What is the safety risk?  Is the vehicle safe to drive?

Stability control, traction control, and anti-lock braking may not perform as intended in certain low traction conditions.  Braking performance will be reduced when towing a trailer equipped with trailer brakes.  There may be increased risk of a crash.

 

Q6) Does the customer have to pay for this remedy/repair?

No, this repair will be done at no cost to the customer.

 

Q7) Is the remedy/repair available now?

Yes please see the attached bulletin for details.

 

Q8) What should customers do until recall repairs can be completed?  Are there any special instructions?

If special instructions are provided, they will be included in the notification letters to customers.

 

Q9) How can customers check to see if their vehicle is involved in this field action?

Customers who own a vehicle involved in the field action will be notified by mail by General Motors, but they may also check their Vehicle Identification Number (VIN) for field actions in GM Owner Center at https://my.gm.com/recalls or via NHTSA’s website at https://vinrcl.safercar.gov/vin/.

 

Q10) If customers are concerned, can they get a rental car or courtesy transportation?

Courtesy transportation is available for customers whose vehicles are involved in this recall and are within the warranty coverage period for the warranty which is associated with this recall.  Please refer to Warranty Administration Bulletin #17-NA-073:  Field Action Courtesy Transportation Policy for further information.

 


 

 


2 Affected Products

Vehicles

MAKE MODEL YEAR
CHEVROLET TAHOE 2021
GMC YUKON 2021

 


11 Associated Documents

Defect Notice 573 Report

RCLRPT-21V579-4772.PDF 215.407KB

RCLRPT-21V579-4772

 


Recall Acknowledgement

RCAK-21V579-9584.pdf 645.288KB

RCAK-21V579-9584

 


Manufacturer Notices(to Dealers,etc) – Dealer Message re N212340970 – Safety Recall Incorrect Software Calibrations May Affect Certain Driving Assist Features

RCMN-21V579-9940.pdf 11.614KB

RCMN-21V579-9940

 


Miscellaneous Document – Frequently Asked Questions (FAQs) for Safety Recall N212340970 Incorrect Software Calibration May Affect Certain Driving Assist Features

RMISC-21V579-7760.pdf 99.378KB

RMISC-21V579-7760

 


Safety Bulletin – Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features

RCSB-21V579-5638.pdf 592.045KB

RCSB-21V579-5638

 


Recall Quarterly Report #1, 2021-3

RCLQRT-21V579-0759.PDF 211.133KB

RCLQRT-21V579-0759

 


Recall Quarterly Report #2, 2021-4

RCLQRT-21V579-0922.PDF 211.232KB

RCLQRT-21V579-0922

 


Manufacturer Notices(to Dealers,etc) – Dealer Message re REVISION N212340970 01 Safety Recall Incorrect Software Calibrations May Affect Certain Driving Assist Features Customer Letter Added

RCMN-21V579-8043.pdf 57.268KB

RCMN-21V579-8043

 


Safety Bulletin – Safety Bulletin re Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features

RCSB-21V579-6204.pdf 599.225KB

RCSB-21V579-6204

 


Miscellaneous Document – Frequently Asked Questions (FAQs) for Safety Recall N212340970 Incorrect Software Calibration May Affect Certain Driving Assist Features

RMISC-21V579-5766.pdf 99.378KB

RMISC-21V579-5766

 


ISSUED Owner Notification Letter(Part 577)

RCONL-21V579-0379.pdf 78.884KB

RCONL-21V579-0379

 


Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=21V579&docType=RCL

 


 

GM Diagnostic/Programming (TIS2Web)

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:

Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light OEM GM Tech 2 Dealer Package
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light Bosch GM MDI 2 (2nd Gen) MDI2 interface
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light Bosch EL-52100-AM GM Multiple Diagnostic Interface 2 (MDI 2) Kit
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light CarDAQ-Plus
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light CarDAQ-Plus 2 Diagnostic Code Reader and J2534 Programming Tool
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light Drew Technologies (DRWCDPLUSKIT) CarDAQ-Plus J2534 Flash Reprogramming Kit
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light Drew Tech CarDaq-M 2 SAE J2534-1/2 Reflash Reprogramming Tool OEM Diagnostics
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light CarDAQ-Plus 3 All Makes J2534 Reprogramming Tool
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light RAP2 OEM J2534 Remote Reprogramming Tool
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light Drew Technologies (DRWMONGGM) Mongoose GM Vehicle Interface (VPW/CAN) J2534
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light Mongoose-Pro GM J2534 Vehicle Interface Cable – OEM Reprogramming and Diagnostics on General Motors Vehicles
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light VSI J2534 ECU Reprogrammer & Diagnostic Adapter
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light Autel (AULMF2534) MaxiFlash Pro
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light Autel MaxiFlash Elite VCI J2534 Pass-Thru ECU Programming Tool
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light Dearborn d-Bridge Adapter J2534 OBDII Engineering Tool
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light Mongoose-Plus J2534 OEM Vehicle Interface Cable – OEM Reprogramming and Diagnostics for GM
Product Safety Recall N212340970 Incorrect Software Calibrations May Affect Certain Driving Assist Features - 2021 Chevrolet Tahoe & GMC Yukon » small light BOSCH Automotive Tools MTECH2 Mastertech II J2534 VCI

 

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.

www.acdelcotds.com

 


 

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  • 👍【2022 Newest Updates: AutoAuth Access & Cloud Service】Two long-awaited features for old customers!✅(Since June 2022)Autel original MS908S Pro scanner supports "AutoAuth" gateway access on 2018 and newer Fiat Chrysler vehicles, such as Chrysler, Dodge, Jeep, etc, still growing. ✅(Support Cloud Report Management, you can upload diagnostic reports to Autel Cloud and share reports with your customers through QR Code/email/text message easily, and they can view the reports anytime.
  • 👍【A Must for Garage and Workshop】If you need to program Benz/BMW, Autel MS908S Pro scanner is definitely an expert, this is what it does best! MS908S Pro is a mature product that has been tested and approved by workshops across US. Besides ECU Programming for Benz/BWM, MS908S Pro can perform ECU Coding, Active Tests, 36+ Services, All System Diagnostic, FCA “AutoAuth” Access, etc.🚦📢👉 Note: MS908S Pro is for North & South America only and supports English only.
  • 👍【One-Stop ECU Programming for BENZ/ BMW】Coming with J2534 ECU programming device, Autel MS908S Pro is competent for ECU programming and ECU coding/ adaption. It can program blank ECU, adapt existed ECU, match components, reflash second-hand ECU, unlock hidden functions, etc. In order to reduce operational burden, MaxiSys MS908S Pro provides one-stop operation to meet the needs of different experienced technicians, no worries about missing some steps and causing failure.
  • 👍【Advanced ECU Coding, Customize your Car】Automotive diagnostic scan tool MS908S Pro features Advanced ECU Coding, so you can use it to customize your car as needed by disabling some unneeded OEM settings (like auto start-stop, chimes, etc), or activating the hidden features pre-programmed to car computer to get high-end functions (like US-style daytime light, auto door look at a particular speed, etc).👉Compatible with BWM, VW, Audi, Skoda, etc.
  • 👍【OE-level Diagnostic Capability & Guided Function】Auto diagnostic tool MS908S Pro, with J2354 device for BT communication up to 210ft/70m working range, can access all available vehicle modules such as PCM, ECM, TCM, BCM, SCCM, etc, to read codes, clear codes, view live data, perform active tests, etc. Guided functions provides step by step specific guidances to complete some complex service operations. 👉Compatible with VW, Audi, Skoda, Seat, etc.

Last update on 2022-10-02 / Affiliate links / Images from Amazon Product Advertising API

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