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It’s an expensive day for General Motors trucks. The Chevrolet Silverado and GMC Sierra have both been facing claims over defective Duramax diesel engines. To settle the class-action lawsuit, General Motors paid $35 million. 

General Motors pays $35 million to settle defective Duramax case 

General Motors is bailing out of the fight with a $35 million payout to settle a class-action lawsuit. As a result, owners with a 2011-2016 Chevrolet Silverado and GMC Sierra truck equipped with the Duramax diesel engine could be entitled to cash. 

The defective Duramax engine lawsuit alleges that the 6.6-liter Duramax diesel V8 engines were equipped with a faulty high-pressure fuel injector pump. Plaintiffs claim that the CP4 is too weak, making it susceptible to catastrophic failure. 

While General Motors maintains that it didn’t do anything wrong, it’s putting up the cash. Doing so could prevent a larger payout while avoiding possible risks and delays involved with extended legal proceedings. 

But there’s a bit of red tape. Only those who purchased the trucks from an authorized dealership in California, Florida, Illinois, Iowa, New York, Pennsylvania, and Texas qualify for settlements. 

The 2024 GMC Sierra 1500 off-roading in the mountains
2024 GMC Sierra 1500 | GMC

According to JND Legal Administration, settlement pay will range between $6,356 to $12,712 for drivers who still own their trucks and paid out of pocket for CP4 repairs. Folks that no longer own their trucks and didn’t pay for CP4 raptors might be entitled to $400 to $800. 

Current owners can benefit from the Partial Repair Reimbursement Program. It provides future warranty coverage by reimbursing %0% of the costs of CP4 repairs to General Motors-authorized dealerships. 

The warranty covers 12 months after Final Approval of the settlement in January 2025, or when the trucks reach 200,000 miles. 

Also, while plaintiffs claim they suffered economic damages as a result of the defective Duramax diesel engine, there are no related deaths or personal injuries. 

If you need assistance, reach out to JND Legal Administration. The deadline to file your claim is six months after Final Approval.  

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Staff Writer

Allison Barfield

Allison Barfield joined MotorBiscuit in 2020 and covers all things trucks, SUVs, and Jeeps. Having grown up on a farm in Rock Hill, South Carolina, she’s no stranger to the “Best in Class” truck and SUV debates; people in her hometown were always gathering to help work on vehicles together, and deliberation would naturally arise.

Allison graduated from the University of South Carolina with a degree in Media Arts. She has helped bring awareness to issues Women In Trucking face and has promoted Truckers Against Trafficking, an anti-trafficking NGO.

A fan of creatively dark literature, Allison appreciates the works of Shirley Jackson and Emily Dickenson. She lives in a mountainous area of the country and enjoys off-roading and camping. Her dog, Bruce, often joins her in testing trucks and SUVs for our site.