Chevy or GMC Diesel Owners Could Get Up to $12,000 for CP4 Fuel Pump Failure — See If You Qualify

If you drive a Chevrolet Silverado or GMC Sierra from 2011 to 2016 with a Duramax diesel engine, here’s something you’ll want to know: you could be entitled to up to $6,700. Why? General Motors has agreed to a $50 million settlement due to a faulty fuel pump that damaged thousands of engines. And the worst part? GM reportedly knew about the problem but kept selling the vehicles anyway.

Let’s break it all down so you can see if you’re eligible and how to claim your money.

Problem

The main issue comes down to a fuel pump known as the CP4. This pump didn’t mix well with American diesel—specifically the kind sold in states like California, Texas, New York, Illinois, Iowa, and Pennsylvania. When used together, they created metallic debris that damaged internal engine parts. In some cases, it even led to complete engine failure.

Owners were stuck paying thousands of dollars out of pocket for repairs that should never have been necessary. That’s why this class action lawsuit was filed—and why GM is now offering compensation.

Affected

This lawsuit only applies to certain models. If you own one of the following vehicles, you could be affected:

• Chevrolet Silverado (2011–2016)
• GMC Sierra (2011–2016)
• Equipped with Duramax LML or LGH diesel engines

If you’re unsure whether your vehicle qualifies, use your VIN to check on the official class action website. The VIN is a 17-digit number found on your dashboard or vehicle registration.

Lawsuit

The case against General Motors centers around one key fact: GM knew about the problem. The judge ruled that internal documents proved the company was aware that the CP4 fuel pump was not compatible with American diesel fuel. But instead of replacing it or warning customers, GM continued to sell the trucks.

That decision has now cost them $50 million in settlement money.

Payouts

So how much can you get? It depends. If you can prove that your vehicle suffered fuel pump damage—and you paid for repairs—you may receive up to $6,700. Most people will receive around $6,300, depending on documentation.

In addition to cash, the settlement includes a 12-month warranty extension for the fuel pump system. That means if it breaks again, you might not have to pay for the repairs.

Steps

Here’s what to do if you think you qualify:

1. Check your VIN to confirm eligibility
2. Gather any records or invoices related to engine or fuel pump repairs
3. Save receipts or dealership documents
4. Keep an eye on the official site for claim form deadlines

The more proof you have, the better your chances of receiving a full payout.

Classaction

This case is a classic example of a class action lawsuit. When one person sues a large company, it’s hard to get results. But when thousands of people join forces in court, companies feel the pressure.

In this situation, thousands of truck owners are united against GM. Even though the company isn’t admitting fault, it’s agreeing to pay the money so the issue dies down publicly. That’s how most class actions end—quietly, with a check.

Reputation

Why isn’t GM saying the fuel pump was defective? Because admitting that would damage the company’s reputation. The auto industry runs on trust. No brand wants to say it knowingly sold vehicles with bad parts. Instead, they settle lawsuits, extend warranties, and hope no one remembers in a few years.

So while this settlement may help affected owners, it also helps GM avoid a bigger public relations disaster.

Action

There’s no final court hearing date yet, but it’s smart to act now. If you own one of the affected trucks, verify your VIN, find those repair bills, and stay tuned for the official claim period. You might end up with thousands of dollars—and one less engine problem to worry about.

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