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Say goodbye to costly repairs – GM will pay up to $12,700 for CP4 fuel pump defects in Chevy and GMC models

by Laura M.
May 16, 2025
in Mobility
Say goodbye to costly repairs - GM will pay up to $12,700 for CP4 fuel pump defects in Chevy and GMC models

Say goodbye to costly repairs - GM will pay up to $12,700 for CP4 fuel pump defects in Chevy and GMC models

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Years of turning a deaf ear to consumer complaints and lawsuits have resulted in General Motors (GM) agreeing to pay up to $12,700 to owners affected by a major injection system failure in certain Chevrolet Silverado and GMC Sierra models.

The preliminary settlement of this class action lawsuit establishes that the automotive giant will have to pay $50 million to compensate thousands of drivers whose vehicles were rendered unusable (or who spent hundreds of dollars) due to a defect in the CP4 fuel pump. However, GM has refused to accept any blame… Here is what you need to know!

Why is this lawsuit happening?

It’s about the CP4 pump, which appears to be incompatible with the type of diesel sold in several U.S. states. This defect not only causes mechanical failures but, when it breaks, contaminates the entire fuel system, spreading metal shavings that damage injectors, pipes, rails, and even the tank…

Which models are affected?

The issue affects Chevrolet Silverado and GMC Sierra models with Duramax engines manufactured between 2011 and 2016, and the damages could exceed $10,000 per vehicle… without GM offering any assistance!!!

Why is this failure so serious?

What makes this case different is that it’s not just a simple malfunction. As we mentioned, the CP4 was contaminating the entire fuel system, so when the problem was identified, it forced buyers to replace almost the entire system. This kind of repair can cost around $10,000… An outrageous amount.

How much will the affected owners receive?

It will all depend on the damage to the vehicle, whether the vehicle is still in the owner’s possession, if it has been sold, and if the repairs were due to this failure.

Remember, the agreement only covers vehicles registered in California, Illinois, Iowa, Texas, New York, and Pennsylvania.

Does GM admit it was a design flaw?

Despite agreeing to the payment, General Motors has not officially acknowledged that the CP4 pump was a design flaw. Still, internal documents reveal that GM was aware this issue could occur and that the pump did not work well with the diesel sold in the mentioned states… but they chose to keep installing it for years without modifications… Everyone can draw their own conclusions, but ours is that when there’s smoke, there’s fire.

Of course, the decision to accept the settlement and pay is more about avoiding further public attention than admitting guilt, because in such a ruthless industry as the automotive one, brand image damage is nearly irreversible…

What to do if you are affected

Very simple: even though the agreement is still in a preliminary phase, start gathering your repair bills, workshop reports, and vehicle ownership documents, so that once the settlement is approved, you can submit your claims without delay.

Beyond GM…

The CP4 pump issue doesn’t only affect General Motors. Other brands that installed similar injection systems could face similar lawsuits if it is proven they hid known defects…

That’s why this settlement serves as a warning to the industry: when a flaw is evident and hidden for years, sooner or later, it comes to light.

If you own an affected Silverado or Sierra, don’t miss this opportunity, because even if GM won’t say it out loud, this time they will have to compensate those who paid the price for their disastrous decisions. Claim what’s yours and let’s ensure they never gamble with our safety again!

 

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