GMC · Canada · Crit
GMC Sierra HD: Electrical
Affects GMC Sierra HD · 2017–2019 — about 36K vehicles.
The hazard
Issue: On certain vehicles, a small coolant leak could cause the engine block-heater cable to short circuit while plugged in. Note: This recall only affects trucks equipped with a 6.6 L diesel engine and an optional block-heater power cable. This recall replaces Transport Canada Recall # 2019-204. All vehicles repaired under that recall require a second repair. Safety Risk: A short circuit could cause damage to engine components and create the risk of a fire. Corrective Action: General Motors will notify owners by mail. The corrective actions for this recall are under development. Do not use your engine-block heater until the repairs are performed.
What to do
Contact your dealer; the remedy details were not included in the filing.