Last Friday, General Motors has announced that the owners of some 3.64 million of its vehicles will have to come in for a re-flash of their sensing and diagnostic module (SDM) software.
Apparently, a software bug tied to the diagnostic “oscillation test” routine in the SDM software makes it so that frontal airbags and seat belt pretensioners will not deploy “in certain rare circumstances when a crash is preceded by a specific event impacting vehicle dynamics.”
They did not explain what these “rare circumstances” are, but noted that the failure to deploy of this security feature could result in increased risk of injury to the driver and front passenger.
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