Chevrolet / Gmc recall: Equipment
What is wrong
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.
What could happen
An electrical short-circuit can increase the risk of a fire.
The fix
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.
Vehicles covered
- Chevrolet Silverado 2500 2017–2019
- Chevrolet Silverado 3500 2017–2019
- Gmc Sierra 2500 2017–2019
- Gmc Sierra 3500 2017–2019
Facts
- NHTSA recall number
- 21V496000
- Type
- Vehicle
- Filed by
- General Motors, LLC
- Reported to NHTSA
- Jul 1, 2021
- Owners notified
- Apr 4, 2022
- Vehicles or items affected
- 338,020
- Started by
- The manufacturer
- Built
- –
- Part
- Equipment › Electrical › Engine block heater
- Maker's own recall number
- N212329840
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.
Other recalls for the same vehicles
- Chevrolet / Gmc recall: Air bags Sep 24, 2026
- Chevrolet / Gmc recall: Tires Aug 13, 2026
- Chevrolet / Gmc recall: Air bags May 21, 2026
- Chevrolet / Gmc recall: Air bags Mar 19, 2026
- Buick / Cadillac / Chevrolet and more recall: Equipment Feb 26, 2026
- Chevrolet / Gmc recall: Power train Feb 12, 2026
To check one car, enter its 17-character VIN on the official NHTSA page: a recall may cover only some vehicles of a model year.
Recall data: National Highway Traffic Safety Administration (NHTSA). Nebula is not affiliated with or endorsed by NHTSA.