An electrical short-circuit can increase the risk of a fire.

Equipment — Electrical — Engine Block Heater

Summary

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.

Actions

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.

Documents (28)

• Miscellaneous Document - Frequently Asked Questions (FAQs) for Safety Recall N212329840 Engine Block Heater Short Circuit
• Manufacturer Notices(to Dealers,etc) - Dealer Message re N212329840 - Safety Recall Engine Heater Short Circuit
• Miscellaneous Document - Frequently Asked Questions (FAQs) for Safety Recall N212329840 Engine Block Heater Short Circuit
• Manufacturer Notices(to Dealers,etc) - Dealer Message re N212329840 - Safety Recall Engine Heater Short Circuit Population Expansion
• Safety Bulletin re Product Safety Recall N212329840 Engine Heater Short Circuit
• Recall Acknowledgement
• Defect Notice 573 Report
• Manufacturer Notices(to Dealers,etc) - Dealer Message re N212329840 - Safety Recall Engine Heater Short Circuit
• Safety Bulletin re Product Safety Recall N212329840 Engine Heater Short Circuit
• Miscellaneous Document - Notice to Customer re engine fire
• Recall 573 Report
• Recall 573 Report
• Recall 573 Report
• Recall 573 Report
• Manufacturer Notices(to Dealers,etc) - Dealer Message re REVISION N212329840-01 Safety Recall Engine Heater Short Circuit Revised Service Procedure
• Recall 573 Report
• Recall 573 Report
• Recall 573 Report
• Recall 573 Report
• Recall 573 Report
• ISSUED Interim Owner Notification Letter(Part 577)
• Safety Bulletin
• Miscellaneous Document - REVISION N212329840-01 Safety Recall Engine Heater Short Circuit Revised Service Procedure
• Safety Bulletin
• Manufacturer Notices(to Dealers,etc) - Dealer Message re REVISION: N212329840-02 – Safety Recall Engine Heater Short Circuit
• Miscellaneous Document - Frequently Asked Questions (FAQs) for Safety Recall N212329840 Engine Block Heater Short Circuit
• Recall 573 Report-Amendment 03/04/2022
• ISSUED Owner Notification Letter(Part 577)

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