BRIAN KERSEY/UPI/Newscom/The Mega AgencyGeneral Motors is facing a nationwide class-action lawsuit alleging transmission defects in four Chevrolet and GMC vehicles.The lawsuit, obtained by First for Autos, was filed Tuesday, September 15, in the United States District Court for the District of Delaware. It alleges that General Motors manufactured, marketed, distributed and sold certain Chevrolet Malibu, Chevrolet Trailblazer, Chevrolet Equinox and GMC Terrain vehicles equipped with continuously variable transmissions (CVTs) containing components that were "defective."The vehicles named in the lawsuit include Chevrolet Malibu models from 2019 through 2025, Chevrolet Trailblazer models from 2021 through 2025, Chevrolet Equinox models from 2024 to the present model year, and GMC Terrain models from 2024 to the present model year, according to the complaint.ZUMAPRESS.com / MEGA"Among the most concerning consequences of the CVT Defect is the sudden and complete loss of motive power that occurs while the vehicle is in motion, often at highway speeds," the lawsuit alleges. "Owners report a reduced engine power warning, hesitation, and slipping, followed by the vehicle's inability to accelerate or maintain speed, and, in many cases, a complete loss of forward gear that leaves the vehicle unable to move. The abrupt loss of motive power places drivers, passengers, and surrounding motorists at imminent risk of collision and serious injury."The complaint further claims that "numerous Class Vehicle owners have experienced CVT failure both within and outside the applicable warranty periods."The lawsuit accuses GM of denying coverage to some consumers, leaving them with "vehicles that suffer recurring failures, diminished safety, and substantial out-of-pocket expenses for transmission replacement and related damage."ZUMAPRESS.com / MEGAThe plaintiff, John Williams of Sacramento, California, is bringing the case on behalf of himself and other owners of the specified vehicles and model years nationwide. The lawsuit alleges that GM was "aware" that the vehicles' transmissions were "prone to premature internal failure, including clutch regulator valve sticking, chain and pulley damage, bearing damage, slipping, and loss of forward gear."The complaint also states that "many" vehicle owners have experienced repeated problems and alleges GM has "not implemented a permanent fix," resulting in "repeated transmission-related repairs."The lawsuit further accuses GM of telling customers that their vehicles were "operating normally" or "as intended" despite the alleged defects.According to the complaint, Williams purchased a new 2025 Chevrolet Equinox in 2024 and has had repeated CVT issues since his first oil change at approximately 7,000 miles."Despite bringing his vehicle to a GM dealership — GM's authorized agent for repairs — Plaintiff has not received a permanent repair under warranty, and his vehicle continues to exhibit the CVT defect," the lawsuit claims.GMCThe lawsuit states that at least 100 people are part of the proposed class, and the claims exceed $5 million.The complaint accuses GM of violating California's Consumers Legal Remedies Act and the California Business & Professions Code.It also brings claims for negligence, breach of express warranty, breach of implied warranty, unjust enrichment, and fraud by omission or fraudulent concealment.The lawsuit also demands a jury trial.Read More From First for AutosHonda Accord Owner's Claims Were Denied for 3 Years – Then the Dealer Quoted Her a $5K RepairDealership Tells Driver He Needs New Brakes, Mechanic Looks and Disagrees: 'Happens All the Time''Friends' Alum Matt LeBlanc Seen Driving Old Ford Focus Despite $85 Million Net WorthThis story General Motors Hit With Class-Action Lawsuit Over Transmission Defects in 4 Popular Vehicles first appeared on First for Autos. Follow First for Autos on Yahoo so you don't miss what's coming next.