Introduction
Do you own or used to own a Chevrolet Silverado or GMC Sierra diesel truck from 2011 to 2016? You might know about a problem with the CP4 fuel pump. This small part in the engine can break and cause big trouble. It sends tiny metal pieces into the fuel system, which can ruin the engine. Fixing it can cost a lot of money, and many people had to pay for repairs themselves.
Good news! In 2025, General Motors (GM) agreed to pay $50 million to help truck owners. The court said yes to this deal on May 6, 2025. This guide uses very simple words to explain everything. You’ll learn what the lawsuit is about, who can get money, how much you might get, and how to ask for it. My name is Orland Howell, and I’ve spent four years writing about lawsuit settlements. I help people like you understand tricky legal stuff. My goal is to make this super easy so you can act fast.
This deal doesn’t mean GM says they did anything wrong. But it helps people who had problems. Let’s start!
What’s Wrong with the CP4 Fuel Pump?
The CP4 fuel pump is a part in the diesel engine that pushes fuel to make the truck run well. But in some Silverado and Sierra trucks, this pump has a big problem.
Why Does the Pump Break?
The CP4 pump was made by Bosch for diesel fuel used in Europe. In the U.S., our diesel fuel is different. It has stuff that makes the pump’s parts rub too much. This rubbing makes tiny metal bits. These bits mix with the fuel and hurt other parts, like fuel lines and injectors. Sometimes, the whole engine stops working. This can make the truck stop suddenly, which is scary and unsafe.
GM found out about this in 2016. They sent a notice (called TSB 16-NA-102) to tell dealers about the problem. But many owners still had to pay for fixes, which could cost $10,000 to $15,000 or more. That’s why people started a lawsuit.
Which Trucks Have This Problem?
Only certain trucks have this issue:
- Chevrolet Silverado 2500HD and 3500HD (2011-2016) with the 6.6L Duramax LML engine.
- GMC Sierra 2500HD and 3500HD (2011-2016) with the same engine.
These trucks must have the Bosch CP4 fuel pump. Not all diesel trucks have it—only those with the LML engine from these years.
You can check your truck by looking at the engine code or your Vehicle Identification Number (VIN). I’ll tell you how later.
The Lawsuit Story
This problem started years ago, but the settlement happened in 2025. Here’s what happened:
Important Dates
- 2016: GM sends a notice (TSB 16-NA-102) to dealers about pump problems.
- 2019: Owners start a lawsuit (Chapman v. General Motors LLC) in a Michigan court.
- 2020-2024: More people join the lawsuit, sharing stories of broken trucks and big repair bills.
- June 2024: GM agrees to pay $50 million to settle.
- January 2025: The court has a final meeting to review the deal.
- May 6, 2025: The judge, Terrence G. Berg, says the deal is okay.
- November 6, 2025: The last day to ask for money for past repairs (six months after the judge’s okay).
Right now, in September 2025, many people have asked for money, but more can still apply. If you miss November 6, 2025, you can’t get money for past repairs. This deal only covers trucks bought from GM dealers in seven states: California, Florida, Illinois, Iowa, New York, Pennsylvania, and Texas, from March 1, 2010, to September 13, 2024.
Why only these states? The lawsuit used special laws in these states to protect buyers. If your truck is from another state, look for other lawsuits—some are starting.
Who Can Get Money?
Not every Silverado or Sierra owner can get money. You need to fit certain rules. Here’s who can:
People Who Still Own Their Truck
You still have your truck, and you bought it from a GM dealer in one of the seven states between March 1, 2010, and September 13, 2024. Your truck must have the 6.6L Duramax LML engine with a CP4 pump.
- If you paid to fix the CP4 pump yourself, you can get a lot of money back.
- If you haven’t fixed it yet, you can get help for future repairs (more on that later).
People Who Sold Their Truck
You used to own the truck but sold it. You must have bought it from a GM dealer in one of the seven states during the same dates. Even if you didn’t fix the pump, you can get a smaller amount of money.
Who Can’t Get Money?
- People who bought trucks outside the seven states or after September 13, 2024.
- Trucks with different engines or models from 2017 or later (they use a different pump).
- Most trucks used for business fleets (check your VIN to be sure).
To check if you qualify, go to gmfuelpumplitigation.com and type in your VIN. It tells you right away if your truck is included.
I’ve written about many settlements, and I know people sometimes miss out because they don’t check early. Check your VIN now!
How Much Money Can You Get?
The $50 million is split into different parts. The money you get depends on your situation and how many people ask for it. Here’s how it works:
Money for Past Repairs ($30 Million Fund)
If you paid to fix the CP4 pump or damage it caused:
- You can get between $6,356 and $12,712.
- The amount depends on how much you paid and how many people ask for money. If you paid more, you might get more.
- You need proof, like receipts or bank statements, to show you paid.
For example, if you paid $10,000 for a repair and not many people apply, you could get most of it back. If lots of people apply, the money is shared fairly.
Money for People Who Sold Their Truck ($5 Million Fund)
If you sold your truck and never fixed the pump:
- You can get between $400 and $800.
- This depends on how many people apply.
This money is for the lower value of your truck because of the pump problem.
Help for Future Repairs (Limited Warranty)
If you still own your truck:
- You can get 50% of the cost back for CP4 pump repairs done at GM dealers after May 6, 2025.
- This includes parts, labor, and damage to other parts (like injectors) listed in the GM notice.
- This help lasts until May 6, 2026, or until your truck reaches 200,000 miles, whichever comes first.
You pay half the repair cost, which is better than paying everything. You must ask for this money within 60 days of the repair.
| Type of Help | Who Gets It | How Much | What You Need |
|---|---|---|---|
| Past Repairs | Owners who paid | $6,356–$12,712 | Proof you paid, VIN match |
| Sold Truck | Former owners | $400–$800 | Proof you owned/sold truck |
| Future Repairs | Current owners | 50% back | Repair after May 6, 2025, at GM dealer |
These amounts come from court papers and early claim information. You’ll get your money after all claims are checked, probably in 2026.
How to Ask for Your Money
Asking for money is easy if you have your papers ready. The deadline for past repairs is November 6, 2025. You can ask for future repair money during the warranty period.
Steps to Follow
- Check If You Qualify: Go to gmfuelpumplitigation.com/vin-lookup and enter your VIN. Save or print the result.
- Get Your Papers:
- For buying the truck: Show a receipt or title with the date and state.
- For repairs: Show invoices with dates, costs, and CP4 pump details.
- For sold trucks: Show sale papers, like a bill of sale.
- Apply Online:
- Visit gmfuelpumplitigation.com/claim.
- Fill out the form and upload your papers.
- Or mail your papers to: GM Fuel Pump Settlement, c/o JND Legal Administration, PO Box 91445, Seattle, WA 98111.
- Future Repairs: After a repair, send your claim within 60 days to the same website or address. Include the new invoice.
Need help? Call 1-866-848-0815 or email info@GMFuelPumpLitigation.com. They help for free.
I’ve learned from writing about settlements that keeping all your papers makes this process much easier. Start collecting them now.
Common Questions
Do I Need a Lawyer?
No, you don’t need a lawyer. The website explains everything. But if your case is tricky (like multiple repairs), a lawyer can help for free under a special agreement.
What If My Truck Is from Another State?
This deal only covers seven states. Look for lawsuits in your state—some, like Kansas, are starting.
Can I Say No to the Deal?
You could say no before the deadline, but it’s passed for most people. Saying no lets you sue GM yourself, but that’s hard and expensive.
When Will I Get Money?
Claims will be checked in 2026. Easy ones get paid first.
Is There a Recall?
There’s no full recall, but the warranty helps with repairs. Some owners switch to a different pump (CP3) to avoid problems.
Why This Deal Is Important
This lawsuit shows how group lawsuits help regular people. GM got many complaints and agreed to pay to fix the issue. Over 10,000 trucks may have this problem. This deal sets an example for other truck issues.
I’m Orland Howell, and I’ve written about many car settlements. This one is great because it’s fair and easy to understand. It helps real people without long court fights.
Tips to Keep Your Truck Safe
Even with this deal, you can protect your truck:
- Use good diesel fuel with additives.
- Change fuel filters often.
- Watch for warning lights, like low fuel pressure.
- Think about adding a lift pump kit. Many owners say it helps the CP4 pump last longer.
Drive carefully. If your pump breaks, tow your truck to a GM dealer to use the warranty.
Conclusion
The CP4 fuel pump settlement is a big win for Silverado and Sierra owners. If you qualify, act now—file your claim by November 6, 2025. You could get thousands of dollars for past repairs or half off future fixes. Visit gmfuelpumplitigation.com to start.
Disclaimer
This article is for information only and is not legal advice. It uses facts from court documents and official sources as of September 25, 2025. The money you get and who qualifies may change based on how many people apply. Talk to a lawyer for advice about your situation. Orland Howell and this article are not connected to General Motors or the settlement team.
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Orland Howell is a seasoned content writer with four years of deep expertise in crafting compelling and informative content about lawsuit settlements. With a keen understanding of legal nuances and a talent for translating complex topics into clear, engaging narratives, Orland helps law firms, legal professionals, and clients communicate effectively. His work spans blog posts, articles, whitepapers, and website content, all designed to educate, inform, and drive results. Passionate about empowering audiences with knowledge, Orland combines precision, creativity, and industry insight to deliver content that resonates and builds trust.
