GM class action lawsuit overview:
- Who: Two vehicle owners have filed a class action lawsuit against General Motors.
- Why: They claim GM sold vehicles with defective master brake cylinder assemblies.
- Where: The GM class action lawsuit was filed in Pennsylvania federal court.
A new class action lawsuit claims General Motors sold vehicles with defective master brake cylinder assemblies that can cause a partial or total loss of braking.
Plaintiffs Eric Barron and Chelsey Thompson filed the class action lawsuit against General Motors on Oct. 2 in Pennsylvania federal court, alleging violations of state and federal consumer laws.
According to the lawsuit, GM sold the plaintiffs and class members defective 2025 Chevrolet Traverse, GMC Acadia, Buick Enclave, Chevrolet Colorado and GMC Canyon vehicles that contain defective master brake cylinder assemblies. The defective assemblies fail abruptly and without warning soon after vehicle delivery, leading to a partial or total loss of braking, the plaintiffs claim.
“When the defect manifests, the vehicle instrument cluster displays numerous warning lights, including a red ‘Brake’ warning light and the Anti-lock Brake System (ABS) warning light, and displays a ‘Service Brake System’ message,” the GM class action lawsuit states.
The plaintiffs claim many owners, including Thompson, also experienced partial or total loss of braking, where the brake pedal either becomes stiff and hard to press or sinks into the floor.
“Owners also report resorting to all manner of gimmicks to get the brakes to work, such as shutting the vehicle off and restarting and pumping the brake pedal,” the plaintiffs say.
GM knew about the brake defect and failed to repair it, class action alleges
The plaintiffs claim GM failed to repair the defect under its New Vehicle Limited Warranty within a reasonable period of time and did not issue a safety recall regarding the defect.
They allege GM had knowledge of the defect before selling the vehicles to customers, as earlier models had the same issue.
They also claim GM learned about the defect through pre-sale testing, early consumer complaints and reports from dealerships.
The plaintiffs are looking to represent anyone who purchased or leased a 2025 Chevrolet Traverse, GMC Acadia, Buick Enclave, Chevrolet Colorado or GMC Canyon vehicle in Pennsylvania or New York.
They are suing for fraudulent concealment, breach of warranty, violations of state lemon laws and consumer protection laws and unjust enrichment. They seek certification of the class action, damages, fees, costs and a jury trial.
GM is currently facing another lawsuit claiming it sold certain vehicles with a dangerous engine defect and that the company refused to provide an adequate or lasting remedy for the alleged defect under its express and implied warranties.
What do you think of the allegations made in this GM class action lawsuit? Let us know in the comments.
The plaintiffs are represented by Sergei Lemberg of Lemberg Law LLC.
The GM class action lawsuit is Barron, et al. v. General Motors LLC, Case No. 2:25-cv-05696, in the U.S. District Court for the Eastern District of Pennsylvania.
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