Three customers from different states across the U.S. have filed a lawsuit against General Motors after their 2025 car models suffered issues related to the brake system. The lawsuit claims GM allegedly knew about the defects in the five models that have been affected by the issue.
According to a report by Carcomplaints.com, the lawsuit alleges that the seals inside the brake master cylinders fail prematurely, leading to a brake fluid leakage. This, in turn, compromises braking performance due to the loss of hydraulic pressure.
The class action lawsuit was first filed by two GM vehicle owners in October 2025 from New York and Pennsylvania. However, GM argued the lawsuit was unwarranted, as the brake master cylinders on the customers’ vehicles had already been replaced at no cost.
The lawsuit was changed and refiled, this time adding a case from a Missouri-based plaintiff. Notably, the plaintiffs wrote to GM about the problem after the brake master cylinder was replaced on their cars, stating that five 2025 models are defective.
Read More from MotorBiscuit:
- Dodge Teases a Sub $30,000 Sports Car That Comes With “Style, Attitude, And Performance”
- Florida Drivers Warned: Why Sleeping in Your Car Could Still Lead to a DUI Charge
- Ex-Wife Hits Tesla With Model 3 Lawsuit in Georgia After Car Crashes And Bursts Into Flames
The refiled lawsuit in the U.S. District Court for the Eastern District of Pennsylvania now includes “all persons or entities who purchased or leased a 2025 Chevrolet Traverse, 2025 GMC Acadia, 2025 Buick Enclave, 2025 Chevrolet Colorado, or 2025 GMC Canyon vehicle in Missouri, New York or Pennsylvania.”
Three Plaintiffs Sue GM Over Similar Brake Master Cylinder Issues
Chelsey Thompson, the plaintiff from New York, encountered a failed master cylinder on her 2025 Chevrolet Traverse, which GM replaced without any charges.
However, she claims that GM violated the New York Lemon Law, accusing the brand of “breach of express warranty, breach of implied warranty of merchantability, fraudulent concealment, and unjust enrichment.”
Eric Barron, the plaintiff from Pennsylvania, encountered a failed brake master cylinder on his 2025 Chevrolet Traverse, which GM replaced for free.
But Barron still sued GM for violating the Lemon Law, and for “breach of express warranty, breach of implied warranty of merchantability, fraudulent concealment, and unjust enrichment.”
Lastly, the plaintiff from Missouri, Simon Moelle, experienced a brake master cylinder problem on his 2025 GMC Acadia. Just like the other plaintiffs, Moelle had the part replaced by GM without any charge.
However, he has sued the brand for “breach of express warranty, breach of implied warranty of merchantability, fraudulent concealment, and unjust enrichment.”
GM sent dealerships a Service Update number N242482170 about brake master cylinder failures in 2024 Chevrolet Traverse and 2025 Buick Enclave vehicles. The class action lawsuit was filed shortly after.
While GM argues that none of the plaintiffs own the 2024 Chevrolet Traverse or the 2025 Buick, the lawsuit states that the plaintiffs’ cars use the same type of brake master cylinders as those covered in the service bulletin.
