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GM Transmission Class Action Moves Forward | Auto Defects

The Lyon Firm is investigating an auto defect class action lawsuit filed against General Motors for an alleged faulty GM transmission issue. Plaintiffs claim GM knowingly sold more than 800,000 cars that had defective transmissions.

Contact an experienced auto defect lawyer to learn more about your legal options following an auto defect-related accident or injury. If your GM automobile, or another make and model, has a defective transmission that led to an accident, call us for a free consultation. The Lyon Firm handles a wide range of auto recall and product liability claims, including personal injury cases that stem from automotive defects.

Can I Join the Defective GM Transmission Class Action?

On August 28, 2024, the U.S. Court of Appeals for the Sixth Circuit affirmed a class certification granted on March 20, 2023 in a class action lawsuit across 26 states against General Motors. The multi-state complaint alleges the auto manufacturer violated state consumer protection statutes by knowingly putting cars with faulty transmissions on the market. Plaintiffs say the company endangered drivers, passengers, and pedestrians by allowing these cars on the road.

The certified class is composed of more than 800,000 owners of GM vehicles with one of two models of eight-speed automatic transmissions, the GM 8L90 or 8L45. The affected cars named in the case were the Cadillac CTS, CT6 and Escalade; Chevrolet Camaro, Colorado, Corvette and Silverado; and GMC Canyon, Sierra and Yukon, and other models manufactured between 2015 and 2019.

Consumers and car owners involved in the case have said that the impacted vehicles suffer from “shuddering” or “shaking” in higher gears and a kind of “lurching” or “jerking” in lower gears. Some drivers reported that the gear shifting was so strong that it feels as if they were hit by another vehicle. Internal company documents obtained in the discovery period allegedly show that GM insiders knew the aggressive shifting could be a safety issue by startling drivers.

Plaintiffs in the GM transmission case allege consumer fraud and an “intentional concealment or deception by the defendant concerning its knowledge of the alleged defects.”

Contact our class action auto defect lawyers for a free case review of any significant auto recall or defect claim that caused an injury or accident. Free and confidential consultations for plaintiffs in all fifty states.