General Motors, LLC: Equipment › Electrical › Engine Block Heater
General Motors, LLC reported this defect to federal regulators on Jul 1, 2021 and put the number of vehicles at risk at 338,020. The repair is free for as long as the recall stands.
The defect
General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500 and 2017-2019 GMC Sierra 2500 and 3500 vehicles equipped with a Duramax diesel 6.6 liter engine and an optional engine-block heater cord. An electrical short-circuit may occur in the engine-block heater cable or in the terminals that connect the heater cable to the block heater.
The risk
An electrical short-circuit can increase the risk of a fire.
The remedy
Dealers will replace engine block heaters and heater cords. Vehicles that have this feature disabled as a remedy to the safety condition will be contacted and offered replacement block heaters and heater cords under a separate customer satisfaction program, free of charge. GM will provide free replacement block heaters and cords under a separate customer satisfaction campaign. For vehicles previously included in recall 19V-328, the heater cord will be replaced and rerouted, free of charge. Interim owner notifications were mailed on August 13, 2021. Owner notification letters are expected to be mailed on April 4, 2022. Customers may call GMC customer service at 1-800-462-8782. GM's number for this recall is 212329840.
12 model years covered
Newest first| Vehicle | Complaints | Recalls | Fires | Crashes |
|---|---|---|---|---|
| 2019 Chevrolet Silverado 2500 | 74 | 7 | 6 | 2 |
| 2019 Chevrolet Silverado 3500 | 22 | 7 | 0 | 1 |
| 2019 GMC Sierra 2500 | 32 | 7 | 3 | 0 |
| 2019 GMC Sierra 3500 | 13 | 7 | 1 | 1 |
| 2018 Chevrolet Silverado 2500 | 53 | 5 | 2 | 2 |
| 2018 Chevrolet Silverado 3500 | 19 | 6 | 0 | 0 |
| 2018 GMC Sierra 2500 | 35 | 5 | 2 | 0 |
| 2018 GMC Sierra 3500 | 14 | 6 | 0 | 0 |
| 2017 Chevrolet Silverado 2500 | 54 | 5 | 5 | 2 |
| 2017 Chevrolet Silverado 3500 | 13 | 6 | 0 | 0 |
| 2017 GMC Sierra 2500 | 37 | 6 | 1 | 2 |
| 2017 GMC Sierra 3500 | 13 | 7 | 1 | 1 |
What this page is, and what to do next
A recall is not an opinion. It is a Part 573 report a manufacturer is required by federal law to file once it decides a defect poses an unreasonable risk to safety, and it commits them to repairing the vehicle at no cost to the owner. The three passages above are the manufacturer’s own wording as published by NHTSA.
This page describes the campaign. It cannot tell you whether one particular car has already been through the shop — that is tracked by VIN, and only the manufacturer knows it. Check yours at nhtsa.gov/recalls or with a franchised dealer, quoting campaign number 21V496000.
Full record for the 2019 Chevrolet Silverado 2500 → · Recalls carrying a do-not-drive advisory → · Where this data comes from →