Product Safety Recall N212329840 Engine Heater Short Circuit – 2017-2019 Chevrolet Silverado & GMC Sierra 2500/3500

SEOCONTENT-START

IMPORTANT SAFETY RECALL
August 2021
This notice applies to your vehicle, VIN: __________________________________
Dear General Motors Customer:
This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act.
General Motors has decided that a defect which relates to motor vehicle safety exists in certain 2017-2019 model year Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 vehicles equipped with the Duramax diesel 6.6 liter engine and optional engine-block heater cord. As a result, GM is conducting a safety recall. We apologize for this inconvenience. However, we are concerned about your safety and continued satisfaction with our products.
IMPORTANT***You may have already had a recall repair previously performed on your vehicle under GM recall N182206310 or N182206311. General Motors has determined that additional repairs are necessary to make the block heater on your vehicle safe to use.
Until a remedy to fully repair your vehicle is available and performed, you should not use your vehicle’s engine-block heater.
IMPORTANT
• Your vehicle is involved in GM safety recall N212329840.
• You may have already had a recall repair previously performed on your vehicle under GM recall N182206310 or N182206311. General Motors has determined that additional repairs are necessary to make the block heater on your vehicle safe to use.
• Regardless of whether or not you have previously had a recall repair performed on your vehicle, you should not use your vehicle’s engine block heater until further repairs are performed.
Why is your vehicle being recalled?
In vehicles equipped with the Duramax diesel 6.6 liter engine and the optional engine-block heater cord, a short-circuit condition may develop in the engine-block heater cable or in the terminals that connect the heater cable to the block heater. A short-circuit condition can cause damage to engine components and start a fire in the engine compartment.
What will we do?
Parts to repair your vehicle are not currently available, but when parts are available, your GM dealer will replace the block heater and heater cord. This service will be performed for you at no charge. Until this repair is performed on your vehicle, you should not use your vehicle’s engine-block heater.
We are working as quickly as possible to correct this condition. When parts are available, we will send you another letter asking you to take your vehicle to your GM dealer to have your vehicle serviced. You can also check the status of this recall at: https://my.gm.com/recalls. If you have already paid for repairs for this condition, you may submit those charges using the reimbursement request form that will be provided with the next letter.
Until this repair is performed on your vehicle, you should not use your vehicle’s engine-block heater.
Do you have questions?
If you have questions or concerns that your dealer is unable to resolve, please contact the appropriate Customer Assistance Center at the number listed below.
Division
Number
Text Telephones (TTY)
Chevrolet
1-800-630-2438
1-800-833-2438
GMC
1-866-996-9463
1-800-462-8583
Puerto Rico – English
1-800-496-9992
Puerto Rico – Español
1-800-496-9993
Virgin Islands
1-800-496-9994
If after contacting your dealer and the Customer Assistance Center, you are still not satisfied we have done our best to remedy this condition without charge and within a reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, SE., Washington, DC 20590, or call the toll-free Vehicle Safety Hotline at 1.888.327.4236 (TTY 1.800.424.9153), or go to https://www.safercar.gov. The National Highway Traffic Safety Administration Campaign ID Number for this recall is 21V496.
Federal regulation requires that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten days.
Regina Carto
Vice President
Global Vehicle Safety and Systems
GM Recall: N212329840*************************************************************************************************************

GLOBAL SAFETY FIELD INVESTIGATIONS
DCS6009
URGENT – DISTRIBUTE IMMEDIATELY
Date: December 17, 2021
Subject: REVISION – N212329840-01 – Safety Recall
Engine Heater Short Circuit
Revised Service Procedure
Models: 2017 – 2019 Chevrolet Silverado 2500/3500
2017 – 2019 GMC Sierra 2500/3500
Equipped with 6.6L Diesel Engine (RPO L5P)
To: All General Motors Dealers
This bulletin is being revised to include the procedure to enable the engine-block heater for northern/cold weather areas only. Please discard all previous copies of N212329840.
Important: An initial supply of part 12724955 (HEATER ASM-ENG COOL) and 85590391 (CORD ASM-ENG COOL HTR) will be pre-shipped in a Fair Share Allocation based on all impacted VINS of the Dealers registered in Canada and the following states: Alaska, Colorado, Idaho, Maine, Michigan, Minnesota, Montana, New York, North Dakota, New Hampshire, South Dakota, Vermont, Wisconsin, Wyoming. This pre-shipment starts the week of 12/20/21 and will continue for several weeks. Additional States will be added as GM finishes shipping to Canada and cold weather states and more parts become available. Pre-shipped parts will be charged to dealer’s open parts account. All orders placed prior to and during the pre-ship will be cancelled. A quantity limiter may be in effect.
Please verify a VIN’s involvement in this field action by checking in IVH prior to doing any repairs. IVH is the best source for individual VIN inquiries.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS

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GLOBAL SAFETY FIELD INVESTIGATIONS
DCS5880
URGENT – DISTRIBUTE IMMEDIATELY
Date: July 28, 2021
Subject: N212329840 – Safety Recall
Engine Heater Short Circuit
Population Expansion
Models: 2017 – 2019 Silverado 2500/3500
2017 – 2019 Sierra 2500/3500
Equipped with 6.6L Diesel Engine (RPO L5P)
To: All General Motors Dealers
On July 1, 2021, General Motors released Safety Recall N212329840 for Engine Heater Short Circuit. Additional 2017 – 2019 model year Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500 vehicles have been added to this Safety Recall.
Question and Answer Document (Q&A)
Attached to this message you will find a document that addresses the ten most likely questions customers may have regarding this Safety Recall. Please use this information as an aid to confidently answer customer concerns.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen is updated.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS

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GLOBAL SAFETY FIELD INVESTIGATIONS
DCS6081
URGENT – DISTRIBUTE IMMEDIATELY
Date: March 15, 2022
Subject: REVISION: N212329840-02 – Safety Recall
Engine Heater Short Circuit
Models: 2017 – 2019 Chevrolet Silverado 2500/3500
2017 – 2019 GMC Sierra 2500/3500
Equipped with 6.6L, 8-cylinder diesel engine (RPO L5P)
To: All General Motors Dealers
This bulletin is being revised to allow all locations to perform the full repair and to add the customer letter. Please discard all previous copies of N212349840.
The customer mailing will begin in April 2022.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS

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GLOBAL SAFETY FIELD INVESTIGATIONS
DCS5857
URGENT – DISTRIBUTE IMMEDIATELY
Date: July 1, 2021
Subject: N212329840 – Safety Recall
Engine Heater Short Circuit
Models: 2017 – 2019 Silverado 2500/3500
2017 – 2019 Sierra 2500/3500
Equipped with 6.6L Diesel Engine (RPO L5P)
To: All General Motors Dealers
General Motors is releasing Safety Recall N212329840 today. The total number of U.S. vehicles involved is approximately 322,541. Please see the attached bulletin for details.
VINs in Safety Recall N182206310, N182206311 (2017 – 2019 Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500) and VINs in Customer Satisfaction Program N192264210 will move into this Safety Recall.
Question and Answer Document (Q&A)
Attached to this message you will find a document that addresses the ten most likely questions customers may have regarding this Safety Recall. Please use this information as an aid to confidently answer customer concerns.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen will be updated July 2 day, 2021 or sooner. Please hold all warranty transactions until IVH has been updated.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS

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GLOBAL SAFETY FIELD INVESTIGATIONS
DCS5857
URGENT – DISTRIBUTE IMMEDIATELY
Date: July 1, 2021
Subject: N212329840 – Safety Recall
Engine Heater Short Circuit
Models: 2017 – 2019 Silverado 2500/3500
2017 – 2019 Sierra 2500/3500
Equipped with 6.6L Diesel Engine (RPO L5P)
To: All General Motors Dealers
General Motors is releasing Safety Recall N212329840 today. The total number of U.S. vehicles involved is approximately 322,541. Please see the attached bulletin for details.
VINs in Safety Recall N182206310, N182206311 (2017 – 2019 Chevrolet Silverado 2500/3500 and GMC Sierra 2500/3500) and VINs in Customer Satisfaction Program N192264210 will move into this Safety Recall.
This message is being resent to include the Notice to Customer and an updated bulletin.
Question and Answer Document (Q&A)
Attached to this message you will find a document that addresses the ten most likely questions customers may have regarding this Safety Recall. Please use this information as an aid to confidently answer customer concerns.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen will be updated July 2, 2021 or sooner. Please hold all warranty transactions until IVH has been updated.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS

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