Product Safety Recall N182206310 Diesel Engine Block Heater Cord – 2017-2019 Chevrolet Silverado & GMC Sierra

April 25, 2019 NHTSA CAMPAIGN NUMBER: 19V328000

Engine Block Heater/Terminal Short-Circuit

A short-circuit may damage the engine components and increase the risk of fire.


NHTSA Campaign Number: 19V328

Manufacturer General Motors LLC

Components ENGINE

Potential Number of Units Affected 324,226



General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 4500, 5500 and 6500 vehicles and 2017-2019 Chevrolet Silverado 2500 and 3500 vehicles and GMC Sierra 2500 and 3500 vehicles equipped with Duramax 6.6 liter diesel engines and an optional engine-block heater. The engine block heater cord or the terminals that connect the heater cord to the block heater may short circuit and fail.



The remedy for this recall is still under development. The manufacturer has not yet provided a notification schedule. Owners may contact GM customer service at 1-586-596-1733. GM’s number for this recall is N182206310.



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


Check if your Vehicle has a Recall

Frequently Asked Questions (FAQs) for Safety Recall N182206310
Diesel Engine Block Heater Cord


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?
A1) 2017-2019 Chevrolet Silverado 2500/3500, 2017-2019 GMC Sierra 2500/3500 and 2019 Chevrolet Silverado 4500/5500/650 vehicles equipped with the Duramax diesel 6.6 liter engine (RPO L5P or L5D) and the optional engine-block heater cord (RPO K05).


Q2) What is the issue or condition?


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.  While GM’s root-cause analysis is ongoing, GM has determined that a short-circuit condition can occur in these vehicles if: (i) a block-heater coolant leak develops and coolant contacts the block-heater cable terminals while the cable is plugged into an energy source; or (ii) the heater cable itself is chafed or damaged due to improper routing, use, or storage.


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


The customer may notice: (i) smoke or a burning smell; (ii) poor block-heater performance; (iii) tripped circuit breakers or blown vehicle fuses; (iv) damage to the block heater, the heater cable, or engine components; and (v) block-heater coolant pooling under the vehicle.


Q4) What is the remedy/repair?
A4) GM will provide this information when available.


Q5) What is the safety risk?  Is the vehicle safe to drive?
A5) A short-circuit condition can cause damage to engine components and, in rare cases, start a fire in the engine compartment


Q6) Does the customer have to pay for this remedy/repair?
A6) No, when the remedy is available this inspection/repair will be done at no cost to the customer.


Q7) Is the remedy/repair available now?
A7) No, when a remedy is available and/or sufficient quantity of parts are available, the recall bulletin will be released, and dealers can begin repairing vehicles.


Q8) What should customers do until recall repairs can be completed?  Are there any special instructions?
A8) 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?
A9) 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 or via NHTSA’s website at


Q10) If customers are concerned, can they get a rental car or courtesy transportation?
A10) 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.



15 Affected Products


GMC SIERRA 2500 2017-2019
GMC SIERRA 3500 2017-2019

8 Associated Documents

Frequently Asked Questions (FAQs) for Safety Recall N182206312 Diesel Engine Block Heater Cord

RMISC-19V328-8865.pdf 85.662KB

Download (PDF, 84KB)

Frequently Asked Questions (FAQs) for Safety Recall N182206310 Diesel Engine Block Heater Cord

RMISC-19V328-2468.pdf 86.471KB

Download (PDF, 84KB)

Safety Bulletin

RCSB-19V328-5098.pdf 384.268KB

To View or Download this Document Click Here


RMISC-19V328-7318.pdf 149.473KB

Download (PDF, 146KB)

Defect Notice 573 Report

RCLRPT-19V328-5658.PDF 214.446KB

Download (PDF, 209KB)

Manufacturer Notices(to Dealers,etc) – Date: April 26, 2019 Subject: N182206310 – Safety Recall Diesel Engine Block Heater Cord

RCMN-19V328-8892.pdf 60.835KB

Download (PDF, 59KB)

Manufacturer Notices(to Dealers,etc) – Date: April 26, 2019 Subject: Stop Delivery Order for Upcoming Safety Recall N182206312

RCMN-19V328-7499.pdf 67.078KB

Download (PDF, 66KB)

Recall Acknowledgement

RCAK-19V328-6308.pdf 245.624KB

Download (PDF, 240KB)

Recalls Documents


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Last update on 2019-08-17 / Affiliate links / Images from Amazon Product Advertising API

Last update on 2019-08-17 / Affiliate links / Images from Amazon Product Advertising API

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