N222380840

Product Emission Recall
N222380840 Incorrect TCM Calibrations in Service Reprogramming
Release Date:
Attention:
November 2022
Revision:
00
ONLY Chevrolet Medium Duty dealers can complete this recall repair.
Make
Chevrolet
Model
3500/4500 Medium Duty (LCF)
Model Year
From
To
2021
2022
RPO
L8T
Description
6.6L Engine
Involved vehicles are marked “Open” on the Investigate Vehicle History screen in GM Global Warranty Management
system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections
and/or repairs.
Condition
Correction
General Motors has decided to conduct a Voluntary Emissions Recall on certain 2021-2022 Chevrolet
3500/4500 Medium Duty Low Cab Forward vehicles with a 6.6L engine (RPO L8T). The Transmission
Control Module (TCM) in these vehicles may have been service reprogrammed with incorrect
calibrations. If this occurred, the transmission shift quality and timing could be degraded.
Dealers are to reprogram the TCM.
Parts
No parts are required for this repair.
Warranty Information
Labor
Operation
9106356*
9106357*
Important:
Description
Verified Module Software or Calibration Level: Module Is
Programmed with Same Level Software or Calibration
Transmission Control Module Reprogramming with SPS
Labor
Time
0.2
Trans.
Type
Net
Item
ZFAT
N/A
0.5
* To avoid warranty transaction rejections, carefully read and follow the instructions below:
6125814
• The Warranty Claim Code from the programming event must be accurately entered in the “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
“Warranty Claim Code field of the transaction, otherwise the transaction will reject. It is best practice to enter
the FINAL code provided by SPS2.
Copyright 2022 General Motors. All Rights Reserved.
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Product Emission Recall
N222380840 Incorrect TCM Calibrations in Service Reprogramming
Warranty Claim Code Information Retrieval
6125774
If the Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS2 system as
follows:
1.
2.
3.
4.
Open TLC on the computer used to program the vehicle.
Select and start SPS2.
Select Settings (1).
Select the Warranty Claim Code tab (2).
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.
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 12 V jumper or booster
pack disconnected from the AC voltage supply. DO NOT connect 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.
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Product Emission Recall
N222380840 Incorrect TCM Calibrations in Service Reprogramming
•
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.
•
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
5644477
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Product Emission Recall
N222380840 Incorrect TCM Calibrations in Service Reprogramming
Important: Techline Connect screens shown above.
Important: If the same calibration/software warning is noted on the TLC 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 Transmission Control Module. Refer to Service Programming System SPS in SI, with additional
instructions provided below.
1.1.
Install the special tool: EL-49642 SPS Programming Support Tool.
1.2.
Ignition » On.
1.
1.
6186582
1.3.
Select the TCM programming function in SPS as shown.
1.4.
Select your vehicle options by RPO in the next step.
1.5.
Follow the on-screen instructions to complete the programming event.
5644478
Note: The screenshot above is 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 Warranty
Claim Code (WCC) screen shown above on the job card. Refer to callout 1 above for the location of the WCC on the
screen.
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Product Emission Recall
N222380840 Incorrect TCM Calibrations in Service Reprogramming
2.
Record SPS Warranty Claim Code on job card for warranty transaction submission.
3.
CALIFORNIA, COLORADO, CONNECTICUT, DELAWARE, MAINE, MARYLAND, MASSACHUSETTS, NEW
JERSEY, NEW YORK, OREGON, RHODE ISLAND, VERMONT, WASHINGTON VEHICLES ONLY: Install a Recall
Identification Label upon recall completion. See General Motors Service Policies and Procedures Manual, Recall
Identification Label, for details.
4.
CALIFORNIA VEHICLES ONLY: Complete a “Proof of Correction” certificate and provide to the vehicle owner upon
recall completion. For the recall number on the “Proof of Correction” certificate, enter only the six digits in characters
4-9 of this recall bulletin number: 238084.
Dealer Responsibility
All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers' possession
and subject to this recall must be held and inspected/repaired per the service procedure of this bulletin before customers
take possession of these vehicles. Involved vehicles must be held and not delivered to customers, dealer-traded,
released to auction, used for demonstration, or any other purpose.
All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System
(CPOIS) will be de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting
an accepted/paid warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified
for sale within the CPOIS system, or once again be used in the CTP program.
Dealers are to service all vehicles subject to this recall at no charge to customers, regardless of mileage, age of vehicle,
or ownership, from this time forward.
Customers who have recently purchased vehicles sold from your vehicle inventory, and for which there is no customer
information indicated on the dealer listing, are to be contacted by the dealer. Arrangements are to be made to make the
required correction according to the instructions contained in this bulletin. A copy of the customer letter is provided in this
bulletin for your use in contacting customers. Recall follow-up cards should not be used for this purpose, since the
customer may not as yet have received the notification letter.
In summary, whenever a vehicle subject to this field action enters your vehicle inventory you must take the steps
necessary to ensure the program correction has been made before selling the vehicle. In addition, for vehicles entering
your facility for service, you are required to ensure the customer is aware of the open field action and make every
reasonable effort to implement the program correction as set forth in this bulletin prior to releasing the vehicle.
***THE FOLLOWING 2 PARAGRAPHS ARE NOT FOR CANADA OR EXPORT***
When a California emissions recall is completed by a GM dealer, the dealer must provide the vehicle owner a “Proof of
Correction Certificate” which the owner may need to present to the California Department Of Motor Vehicles (DMV) when
renewing their vehicle registration. Without this correction certificate, the owner may be unable to renew their vehicle
registration.
Additional Certificates can be obtained, at no charge, from the 1Store application in GlobalConnect. Request GM Item
Number 1825 when ordering.
Dealer Reports – For USA
For dealers with involved vehicles, a listing has been prepared and will be available through GM GlobalConnect Maxis
Field Action Reports or sent directly to export dealers. The Inventory tab of the dealer reports will contain VINs that
apply to this recall. This information is intended to assist dealers with the PROMPT COMPLETION of these
vehicles. The Customer In-Service tab will contain customer names and addresses from Motor Vehicle Registration
Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete
this recall may be a violation of law in several states.
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Product Emission Recall
N222380840 Incorrect TCM Calibrations in Service Reprogramming
Customer Notification
USA - General Motors will notify customers of this recall on their vehicle (see copy of customer letter included with this
bulletin).
In order to ensure full protection under the emission warranty, and the right to participate in future recalls, the customer
notification letter recommends that customers have their vehicles serviced as soon as possible. It also advises that failure
to do so could legally be determined to be lack of proper maintenance. The vehicle may fail a state or local emission
inspection test if the recall work is not completed.
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 tools, equipment, 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 dealer for information on whether your
vehicle may benefit from the information.
We Support
Voluntary Technician
Certification
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Product Emission Recall
N222380840 Incorrect TCM Calibrations in Service Reprogramming
December 2022
This notice applies to your vehicle, VIN: _____________________________________
Dear General Motors Customer:
This notice is sent to inform you that General Motors is conducting a voluntary emission recall that includes your
vehicle.
Reason For This Recall: Your 2021-2022 model year Chevrolet 3500/4500 Medium Duty (LCF) vehicle, equipped with
a 6.6L engine has been certified to meet California and Federal emissions standards and may be releasing air
pollutants which exceed these standards.
What Will Be Done: Your GM dealer will reprogram the Transmission Control Module (TCM). This service will be
performed for you at no charge. Eligibility for this service will not be denied solely due to your Chevrolet 3500/4500
Medium Duty (LCF) vehicle having non-GM parts or repairs performed by outlets other than a GM franchised dealer.
How Long Will The Repair Take? Because of service scheduling requirements, it is likely that your dealer will need
your vehicle longer than the actual service correction time of approximately 35 minutes.
What You Should Do: Please contact your GM dealer as soon as possible to arrange a service date. Instructions for
making this correction have been sent to your dealer. Please ask your dealer if you wish to know how much time will be
needed to schedule, process, and repair your vehicle.
When scheduling your appointment, confirm with the dealer that they service Medium Duty Trucks.
If you have any questions or need any assistance, just contact your dealer or the appropriate Customer Assistance
Center at the number listed below.
For the hearing or speech impaired, please contact our Customer Assistance Center using the Telecommunication
Relay Service by dialing 711 then providing the appropriate Customer Assistance Center number for your vehicle.
Division
Chevrolet
Puerto Rico – English
Puerto Rico – Español
Virgin Islands
Number
1-800-222-1020
1-866-467-9700
1-866-467-9700
1-866-467-9700
Text Telephones (TTY)
711 / 1-800-833-2438
Emission Law Information: In order to ensure your full protection under the emission warranty made applicable to
your vehicle by state and federal law, and your right to participate in future recalls, it is recommended that you have
your vehicle serviced as soon as possible. Failure to do so could legally be determined to be lack of proper
maintenance of your vehicle. Also, your vehicle may fail a state or local emission inspection if this recall is not
accomplished.
IMPORTANT MESSAGE FOR CALIFORNIA RESIDENTS
The California Air Resources Board (CARB) requires vehicle emission recalls be completed prior to California
registration renewal. Uncorrected emission recalls will result in the inability to renew your California vehicle registration.
At the time of emission recall completion, your California dealer will issue a "Proof of Correction Certificate". Keep this
certificate and, if required, present it to the Department of Motor Vehicles when renewing your California registration as
proof of recall completion.
We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued
satisfaction with our products.
Regina A. Carto
Vice President
Global Product Safety and Systems
GM Recall: N222380840
Page 7 of 7
GLOBAL SAFETY FIELD INVESTIGATIONS
DCS6341
URGENT - DISTRIBUTE IMMEDIATELY
Date:
November 17, 2022
Subject: N222380840 - Emission Recall
Incorrect TCM Calibrations in Service Reprogramming
Models: 2021-2022 Chevrolet 3500/4500 Medium Duty (LCF)
Equipped with 6.6L Engine (RPO L8T)
To:
All General Motors Medium Duty Dealers
General Motors is releasing Emission Recall N222380840 today. The total
number of U.S. vehicles involved is approximately 16. Please see the
attached bulletin for details.
Customer Letter Mailing
The customer letter mailing will begin on December 1, 2022.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen will
be updated November 17, 2022. A Stock VIN list is not included as our records show
there are no vehicles in dealer new inventory. Please hold all warranty transactions until
IVH has been updated.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS