GM points ‘don’t drive’ order for Medium Responsibility vehicles over hearth threat

Basic Motors has issued a “don’t drive” order for simply over 40,000 examples of its 2019-2023 Chevrolet 4500HD, 5500HD, and 6500HD Medium-Responsibility vehicles. They’re being recalled to deal with a problem with brake stress sensor assemblies that will leak brake fluid into the brake stress change and trigger {an electrical} short-circuit that may probably result in a fireplace, the corporate stated. 

“These automobiles could have a brake stress sensor meeting that enables brake fluid to leak past the diaphragm seal into the stress change,” GM stated in its defect report back to NHTSA. “The brake fluid could seep into the sensor’s electrical parts and brief the brake stress change and the related fuse. If brake fluid shorts the brake stress change and the related fuse, the
circuit can generate extreme warmth that would lead to a fireplace, rising the chance of damage. An underhood hearth could happen when the automobile is off and probably unattended.”

GM stated it has traced the difficulty to a zinc-nickel plating and sealant used to inhibit corrosion inside the stress sensor meeting. The sealant can delaminate, permitting fluid to seep previous the sensor meeting seal over time. GM says homeowners may even see a discover on their sprint screens calling for brake service if the system detects the fluid contamination, however the situation could current with out signs or for too brief a time frame for the pc to detect the issue. 

Thus far, GM has data of 21 incidents of failure in buyer vehicles, 11 of which resulted in hearth, smoke or seen flame, nonetheless a GM spokesperson confirmed to Autoblog that the corporate shouldn’t be conscious of any accidents, accidents or fatalities associated to this situation. The corporate is urging clients to park their vehicles till they are often introduced in for a alternative brake stress sensor change. Homeowners ought to be notified of the difficulty by the tip of Could. 

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