Silverado and Sierra HD Vehicles with Duramax Engines

August 2018: A federal judge granted part of General Motor’s motion for judgment on the pleadings and dismissed or struck some of the claims in the complaint. The remaining claims will move forward. To learn more about the dismissed and continuing claims, click here to read the court order.

2017: A Consolidated Class Action Complaint was filed against General Motors for allegedly falsely advertising 2011-2016 Silverado and Sierra HD 2500 and 3500 vehicles with Duramax engines. Specifically, the complaint claims that the company represents that the Duramax engines in these vehicles reduce “heavy diesel fuel into a fine mist” resulting in “low emissions” when, according to plaintiffs, “defeat devices” in the vehicles turn down emission controls during testing and the vehicles emit more NOx than advertised during normal driving. (The complaint was originally filed in May 2017 and amended when the consolidated complaint was filed in August 2017.) (In Re: Duramax Diesel Litigation, Case No. 17-cv-11661, E. D. MI.)

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