Key Takeaway
Short Circuit In Engine Block Heater Cable by GENERAL MOTORS LLC was recalled on July 1, 2021. What to do: Dealers will replace engine block heaters and heater cords. Vehicles that have this feature disabled as a remedy to the safety condition will be conta...
Short Circuit In Engine Block Heater Cable
Description
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.
Injuries / Consequence
An electrical short-circuit can increase the risk of a fire.
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.
Products Affected
Vehicle
VehiclesCompany Information
GENERAL MOTORS LLC
Unknown location
View all 478 recalls by GENERAL MOTORS LLC →Related Recalls
Engine Stall Due to Disabled Rear Fuel Pump
March 5, 2026
Tire Sidewall Damage
March 5, 2026
Rear Wheel Lock Up from Transmission Control Valve Failure
February 17, 2026
Rear Wheel Lock Up from Transmission Control Valve Failure
February 17, 2026
Rearview Camera May Fail
February 12, 2026
Damaged Parking Brake Wiring Harness
January 22, 2026
Frequently Asked Questions
Is this recall still active?
Check the status badge at the top of this page. "Ongoing" means the recall is still active and you should follow the remedy instructions. "Completed" or "Terminated" means the recall process has concluded, though the safety issue remains relevant for any unrepaired products.
How do I check if my product is affected?
Compare the model number, lot code, serial number, or date range listed in the recall notice with the information on your product's label or packaging. For vehicles, check your VIN at NHTSA.gov/Recalls.
What remedy is available for this recall?
The listed remedy for this recall is: 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 hea...
Where can I find the original recall notice?
This recall was issued by NHTSA. You can view the original notice using the link provided above.