General Motors has agreed to a $24.88 million settlement to resolve a class action lawsuit over alleged engine defects in certain 2011–2014 Chevrolet and GMC vehicles. Eligible Oklahoma drivers may receive an estimated $815 each.
What the Lawsuit Was About
The lawsuit claimed some GM vehicles were sold with defective piston assemblies in their LC9 V8 engines. These defects allegedly caused:
GM denied wrongdoing but chose to settle to avoid ongoing legal costs.
Who’s Eligible?
You may qualify if:
- You currently own or lease a qualifying GM vehicle as of September 26, 2024
- Your vehicle is a 2011–2014:
- Chevrolet Avalanche, Silverado, Suburban, or Tahoe
- GMC Sierra, Yukon, or Yukon XL
- The vehicle has a Generation IV LC9 5.3L V8 Vortec 5300 engine, built on or after February 10, 2011
- The vehicle was purchased or leased in Oklahoma
Excluded: Vehicles that already received upgraded piston rings for free under warranty.
How Much Will You Receive?
- Estimated payout per eligible vehicle: ~$815.40
- Final amount depends on the number of valid claims and deductions for legal fees, administrative costs, and taxes
How to Claim Your Payment
Most eligible owners will automatically receive payment — no claim required.
However, if your notice asks you to complete a class member ID form, you must submit it by July 28, 2025, either:
- Online using the ID from your notice
- By mail to:
GM 5300 LC9 Oklahoma Class Action
P.O. Box 4905
Baton Rouge, LA 70821
Please be aware that your claim form will be rejected if it contains fraudulent information. By submitting your information and your sworn statement of its accuracy, you are agreeing to do so under penalty of perjury. Submitting false information not only jeopardizes your claim but also affects others who are genuinely eligible for the settlement. If you are uncertain about your eligibility for this class action settlement, please visit the class action administrator’s website for more information. Note that NoProofClassActions.org participates in the Amazon affiliate advertising program, and this post may include affiliate links, which could result in us earning a commission if you make a purchase through those links.
