Transport CanadaCritical
2017 GMC SIERRA HDTransport Canada Recall #2019204
The official notice
Defect
A problem with the engine-block heater cable or the terminals that connect the heater cable to the block heater could cause a short circuit. Note: This problem only affects trucks equipped with a Duramax diesel 6.6 litre engine and the optional engine-block heater cable.
Safety Risk
A short circuit could cause damage to engine components and create the risk of a fire.
Remedy
The company will notify owners by mail and instruct you to take your vehicle to a dealer to either replace the engine-block heater or replace both the engine-block heater and cord, depending on the model. Do not use your engine-block heater until the repairs are performed.
40,457 vehicles affectedMfr ref: N182206310Updated June 10, 2026