Owners of certain Chevrolet Silverado and GMC Sierra models may now qualify for payments of up to $12,700. This settlement responds to a known defect in the CP4 fuel injection pump that led to costly damages and widespread frustration among drivers.
The issue centers on 2011–2016 trucks equipped with a 6.6L Duramax diesel engine and the Bosch CP4 fuel pump. According to court documents, the pump was not suited to the diesel formula in several states, causing it to break down internally. When it failed, it often sent metal fragments throughout the fuel system. Imagine a single faulty component ruining injectors, fuel rails, and even tanks. The replacement costs soared past $10,000 for many owners, so a judge approved a preliminary settlement of $35 million. General Motors has not admitted wrongdoing but agreed to pay to settle the claims.
How to file a claim under the newly approved settlement agreement
People who purchased these trucks from an authorized GM dealer in California, Florida, Illinois, Iowa, New York, Pennsylvania, or Texas between March 2010 and September 2024 could be eligible. Didn’t you buy it there? Then you might want to check your vehicle’s paperwork anyway, just in case the truck was first sold in a covered state.
Different payment tiers are available for owners who paid out of pocket, owners who no longer have their vehicle, and future repairs that might still arise. Below is a quick overview of possible payments:
| Payment Type | Maximum Amount |
|---|---|
| CP4 repairs paid out of warranty | $6,356 – $12,712 |
| Owners who no longer have the truck and didn’t pay repair | $400 – $800 |
| Future repairs under certain conditions | Up to $5,000 |
You must provide proof of purchase and relevant repair bills. Once approved, you can expect reimbursement or partial coverage, depending on your specific situation.
Reasons why this CP4 injection pump defect is causing major concerns
Drivers in affected states complained that GM kept installing the pump despite knowing it was incompatible with locally available diesel. Because the CP4 malfunction could contaminate the entire system, many workshop visits turned into full-scale replacements of multiple components. Consequently, vehicle downtime and repair bills skyrocketed.
In the end, this settlement reflects growing pressure on automakers to address known flaws promptly. It also underscores the importance of checking if your truck is part of the recall. If you have documents proving repairs or ownership, gather everything and file a claim to secure any compensation you deserve.