Class Action

Silverado and Sierra HD Vehicles with Duramax Engines

Class Action

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.)


Class-Action Tracker

General Motors Cadillac User Experience System

Class Action

General Motors Cadillac User Experience System

In September 2019, a class-action lawsuit was filed against General Motors for allegedly misleadingly marketing that its Cadillac User Experience system (a touch screen infotainment system with navigation and radio…

Bosch’s CP4 Fuel Injection Pump

Class Action

Bosch’s CP4 Fuel Injection Pump

In November 2018, a class-action lawsuit was filed against Robert Bosch GMBH and several car manufacturers – including Ford and General Motors – for allegedly claiming that the Bosch CP4…

General Motors Diesel Automobiles

Class Action

General Motors Diesel Automobiles

In November 2018, a class-action lawsuit was filed against General Motors for allegedly misleadingly advertising the durability, longevity, and fuel economy of its diesel automobiles when, according to plaintiffs, a…

Corvette Z06

Class Action

Corvette Z06

March 2018: The parties in three of the 2017 cases (Jankovskis, Jasper, and Minarik) agreed to transfer the actions to the Michigan court where Matanky v. General Motors is pending.…

Cadillac Safety Ratings

Class Action

Cadillac Safety Ratings

May 2017: A federal judge granted final approval of a settlement agreement resolving this case. According to the settlement terms, each class member will receive a $1,000 cash award and…

The MPG of GM Vehicles

Class Action

The MPG of GM Vehicles

July 2017: A federal judge preliminarily approved a settlement of the Ellis case. According to the settlement terms, class members may receive either a cash award in the amount of…

GM’s Chevrolet Cruze Vehicles

Class Action

GM’s Chevrolet Cruze Vehicles

July 2016: This action was voluntarily dismissed When a complaint is dismissed without prejudice, an amended version of the complaint can be refiled., the reasons for which have not been…

MPGs of Chevy Sonics

Class Action

MPGs of Chevy Sonics

In November 2016, a false advertising class-action lawsuit was filed against GM for allegedly falsely marketing 2014-2016 Chevrolet Sonics as being rated by the EPA as getting 40 miles per…

Advertised MPGs of GM Vehicles

Class Action

Advertised MPGs of GM Vehicles

In August 2016, another class-action lawsuit was filed against General Motors (GM) for allegedly misrepresenting the EPA-fuel economy ratings and gas mileage estimates of certain vehicles, including the Chevrolet Traverses,…


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