GM CVT Class Action Summary
- Case: Williams v. General Motors LLC, No. 1:26-cv-01162, U.S. District Court for the District of Delaware.
- Filed: September 15, 2026.
- Who is covered (proposed): People and entities in the U.S. who bought or leased a 2019-2025 Chevrolet Malibu, 2021-2025 Chevrolet Trailblazer, 2024-present Chevrolet Equinox, or 2024-present GMC Terrain with GM’s continuously variable transmission.
- What is alleged: A defective clutch regulator valve and related transmission parts can cause slipping, shuddering, hesitation, loss of forward gear, and partial or complete loss of power while driving.
- Case status: Newly filed. The court has not certified a class, no settlement exists, and there is no claim deadline. The allegations have not been proven.
- Recall status: The complaint states that GM has not issued a safety recall for this transmission condition.
- California owners: If your vehicle has had transmission slipping, hesitation, or power loss your dealer could not resolve, contact The Margarian Law Firm for a free case evaluation.
What does the GM CVT lawsuit allege?
The proposed class action was filed against General Motors LLC, the company behind the Chevrolet and GMC brands, in federal court in Delaware, where GM is organized. The court docket lists the case as Williams v. General Motors LLC.
The complaint centers on GM’s continuously variable transmission, or CVT (a transmission that uses a steel chain running between two adjustable pulleys instead of fixed gears, so it can change its drive ratio smoothly). The 51-page filing alleges that a clutch regulator valve (a valve in the transmission’s hydraulic control unit, the valve body, that manages fluid pressure to the clutches) can stick. According to the complaint, that sticking valve and related failures in the drive chain, pulleys, and bearings can lead to slipping, shuddering, delayed acceleration, and loss of forward gear.
The filing describes drivers receiving a reduced engine power warning, followed by hesitation and slipping, and in some cases a complete loss of forward gear that leaves the vehicle unable to move. It also alleges that the check-engine light often does not come on before the failure and that dealers are frequently unable to reproduce the condition.
To support its claim that GM knew about the problem, the complaint points to GM service bulletins sent to dealers, including TSB 24-NA-009, Service Bulletin 16-151-24R, and Preliminary Information bulletin PIP6033, which address CVT slipping, shudder, and loss of motion. The complaint further alleges that GM and its dealers have denied warranty coverage or described the symptoms as normal operation.
The named plaintiff is a Sacramento resident who bought a new 2025 Chevrolet Equinox. He alleges that rough shifting and delayed acceleration began at about 7,000 miles and that a dealer visit under warranty did not produce a transmission repair.
These are allegations in a newly filed complaint. GM has not yet filed a response on the docket, and no court has ruled on whether the claims have merit.
Sources: Williams v. General Motors LLC complaint and court docket
Which vehicles are included in the proposed class?
- 2019-2025 Chevrolet Malibu
- 2021-2025 Chevrolet Trailblazer
- 2024 to present Chevrolet Equinox
- 2024 to present GMC Terrain
The complaint limits the class to vehicles equipped with GM’s CVT, identified as RPO MRG (VT40 or TR690). It proposes a nationwide class of U.S. buyers and lessees plus a California Sub-Class for owners who live in the state. People who suffered personal injuries tied to the alleged defect are excluded from the proposed class. The complaint does not estimate how many vehicles are involved.
Because this is a lawsuit and not a recall, a VIN search on NHTSA’s recall lookup will not show whether your vehicle is part of the case. Your purchase or lease paperwork and window sticker list your model year, and a dealer can confirm which transmission your vehicle has.
What should Malibu, Trailblazer, Equinox, and Terrain owners do now?
Owners do not need to sign up or take any action to be included in a proposed class action. If the court certifies a class or approves a settlement, class members are typically notified. In the meantime, these steps help protect your options:
- If your vehicle slips, shudders, hesitates, or loses power, take it to a Chevrolet or GMC dealer and describe every symptom.
- Ask for a repair order at every visit, including visits where the dealer finds nothing or says the behavior is normal.
- Write down each incident with the date, mileage, speed, and any warning message.
- Keep your purchase or lease contract, warranty booklet, and all service records together.
For questions about your legal rights, contact The Margarian Law Firm.
Class action or individual lemon law claim?
A class action and a lemon law claim are two different paths. A class action seeks relief for a large group at once, and any recovery is shared across the class. A California lemon law claim is an individual case built on your own vehicle’s warranty repair history.
In some situations, an individual claim under California lemon law recovers significantly more than a class action share. In others, joining the class is the only realistic option. Which path fits depends on your vehicle, your repair records, and whether the problem appeared while the vehicle was under warranty.
Loss of forward gear or power while driving is not a cosmetic issue. For California owners who have taken their vehicle to the dealer for these symptoms without a lasting fix, the repair history may support an individual lemon law claim, whether or not the class action moves forward.
The complaint states that these vehicles were sold with a 3-year/36,000-mile bumper-to-bumper warranty and a 5-year/60,000-mile powertrain warranty that covers the transmission. Owners of newer vehicles in the proposed class may still be within those coverage periods. Warranty status is one of the factors in a lemon law claim.
If the case later produces a class notice or settlement, class members generally have a deadline to decide whether to stay in, opt out, or object. Our guide to joining or opting out of a class action explains those choices.
Could your Chevrolet or GMC qualify? A quick self-check
- Have you taken your vehicle to the dealer two or more times for the same transmission issue without a lasting fix?
- Has your vehicle been out of service for 30 or more cumulative days?
- Have you experienced slipping, shuddering, hesitation, loss of forward gear, or a reduced engine power warning?
- Did your dealer acknowledge the problem but fail to resolve it, or tell you it was normal?
- Is your vehicle still within the manufacturer’s warranty period?
If you answered yes to any of the above, you may be entitled to compensation under California’s lemon law. Contact The Margarian Law Firm for a free case evaluation.
If your vehicle qualifies, California law requires the manufacturer to pay your attorney fees, meaning representation typically costs you nothing out of pocket.
What California’s lemon law actually covers →
How a lemon law buyback works →
How automotive class actions work in California →
Get a free, honest case assessment
California Chevrolet or GMC owner?
If you have experienced transmission slipping, hesitation, or loss of power and your dealer has not been able to fix it, or if you want to understand your rights and what you may be legally entitled to, The Margarian Law Firm can help.
Our firm practices exclusively in California automotive consumer law, including lemon law, dealer fraud, and automotive class actions. That exclusive focus means deeper case knowledge, greater litigation resources, and a track record built entirely on cases like yours. We stay closely attuned to how recalls affect consumers’ legal rights and have the resources to litigate, not just negotiate.
Frequently asked questions
1- Do I need to do anything to join the GM CVT class action?
No sign-up is needed at this stage. People who fit the class definition are generally included automatically if a class is certified, and they are notified before any settlement becomes final. Be cautious of anyone asking for fees or personal financial information to add you to the case.
2- Is there a settlement or payout from the GM CVT lawsuit yet?
No. The complaint was filed in September 2026, and the case is at its earliest stage. There is no settlement, no approved payment amount, and no claim form or deadline. Any future settlement would need court approval.
3- Can I file a lemon law claim if I might be part of the class action?
Generally, being a potential member of a proposed class does not stop you from pursuing your own lemon law case. How the two interact depends on the stage of the class case and the terms of any settlement. The Margarian Law Firm can review your situation and explain which path makes sense.
4- Is there a recall for the Malibu, Trailblazer, Equinox, or Terrain CVT?
The complaint states that GM has not issued a safety recall for this CVT condition. It points instead to service bulletins that tell dealers how to diagnose and repair the symptoms. Our Chevrolet Malibu page covers GM’s earlier CVT bulletin and recall history for that model.
5- What if my dealer said the shudder was normal or could not duplicate it?
A repair order that says “could not duplicate” still documents that you reported the problem. The complaint alleges that dealers often cannot reproduce this CVT condition and sometimes describe it as normal. Keep every repair order, and see our overview of transmission problems in lemon cars for common patterns.
6- What if my vehicle lost power in traffic and I was hurt or the vehicle was damaged?
The proposed class excludes people with personal injuries caused by the alleged defect, so injury claims would be handled separately. Vehicle damage and repair costs may factor into a lemon law claim. Talk to The Margarian Law Firm about what happened and which options may apply.
7- Does it matter whether my vehicle is still under warranty?
Yes. A California lemon law claim generally depends on the defect appearing and being reported for repair during the manufacturer’s warranty period. Owners of 2024 and newer Equinox and Terrain models and later-year Trailblazers may still be within GM’s coverage, so dealer visits made now are part of the warranty repair record.
Legal disclaimer
The information in this post is for general informational purposes only and does not constitute legal advice. Past results do not guarantee future outcomes. Every case is evaluated on its individual merits, and outcomes vary based on the manufacturer, the defect, repair history, and other factors. Attorney fees in qualifying lemon law cases are paid separately by the manufacturer upon a successful outcome under California’s Song-Beverly Consumer Warranty Act. Contacting The Margarian Law Firm does not create an attorney-client relationship.
Official sources and further reading
- Court docket: Williams v. General Motors LLC, No. 1:26-cv-01162 (D. Del.)
- Class Action Complaint, Williams v. General Motors LLC, filed September 15, 2026
- Joining or opting out of a class action