GM recalls Silverado and Sierra HD diesels again for block-heater issue

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GM is recalling Chevrolet Silverado and GMC Sierra Heavy Duty trucks equipped with a Duramax diesel engine and an optional engine-block heater. A short circuit in the connection to the block heater could cause a fire, the NHTSA disclosed this week. The short circuit can cause a fire if the block heater's coolant leaks onto the cable terminals...

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