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Safety regulators reviewed concerns over GM sensor

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(Reuters) — U.S. automotive safety regulators reviewed evidence related to an allegedly defective steering sensor that was used in roughly 778,000 older General Motors Co. vehicles but ultimately decided against opening a formal investigation into the matter.

The National Highway Traffic Safety Administration told Reuters about the previously unreported review. The agency evaluated information related to a lawsuit against the automaker brought by the widower of a 42-year-old woman who died after her 2007 Chevrolet Trailblazer SUV crashed, according to documents Reuters reviewed. The cause, her widower alleges in the lawsuit, was a defective steering sensor that the automaker failed to adequately warn drivers about despite long knowing the component had issues.

The lawsuit, filed in a local Georgia court in 2016 and updated in 2020, is ongoing. GM, the top-selling automaker in the United States, denies the allegations and declined to comment on the decision by NHTSA, the primary U.S. vehicle safety regulator.

The lawyer representing the widower, Lance Cooper, wrote to NHTSA in February 2020 urging it to investigate GM for failing to alert regulators to alleged issues with the sensor in a timely manner and recall affected vehicles, according to the letter, which was reviewed by Reuters. Mr. Cooper previously unearthed evidence in another case that helped expose GM’s failure to recall millions of vehicles with defective ignition switches, a crisis that eventually led the automaker to resolve criminal charges in a 2015 deferred prosecution agreement.

Following a request for information from regulators, GM provided documents produced in the recent case focused on the steering sensor, according to court documents.

On Jan. 28, NHTSA officials determined there was “insufficient evidence to lead to a formal investigation at this time,” the agency told Reuters, adding it would take future action if warranted. The agency said the vehicles Mr. Cooper highlighted were built before a U.S. regulation began mandating electronic stability control in September 2011.

The sensor is a key part of GM’s version of electronic stability control, called StabiliTrak. Like other such systems, StabiliTrak adjusts brakes and engine power to help drivers avoid losing control and crashing.

Mr. Cooper told Reuters he was disappointed with NHTSA’s decision to not pursue an investigation. The risk of the sensor failing and disabling electronic stability control “unquestionably relates to automotive safety,” he said.

Two former heads of NHTSA questioned the agency’s decision not to open an investigation. One said the technology, even if not required, was well on its way to becoming mainstream at the time.

A Reuters review of hundreds of pages of documents submitted in the litigation shows that GM has since 2007 confronted a series of issues with the steering sensor, including high levels of warranty claims and a manufacturing flaw, without recalling affected vehicles.

To read a Reuters Special Report on the case, see.

GM, in responses to questions from Reuters, said it had conducted thorough investigations involving experts across many disciplines. After “a rigorous analysis of internal and external data,” the company said, “we’re not aware of any other complaints alleging accidents” that involve StabiliTrak disengaging due to a faulty steering sensor.

Current and former GM employees have testified as part of the litigation that even after losing StabiliTrak, drivers can still steer and brake, so vehicles remain safe.

 

 

 

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