Ford/GM CP4 Injection Pump Defect

DEFENDANT NAME: Ford Motor Company, General Motors LLC
CASE NUMBER: 18-cv-06967, 3:18-cv-07054
COURT: Various Jurisdictions
STATUS: Active
DATE FILED: 11/16/18

Own a Ford or GM vehicle with a Bosch CP4 fuel injection pump? Have you had to replace your vehicle's fuel injection pump or engine?

A dangerous defect is causing metal shavings to leak into your vehicle, leading to catastrophic failure and costly repair bills. You may be entitled to reimbursement. Find out your rights »


  • 2011–present model year Ford pickups with 6.7L Power Stroke engines
  • 2011–2016 2500HD Silverado 6.6L V8 Duramax Diesel Trucks with LML engines
  • 2011–2016 3500HD Silverado 6.6L V8 Duramax Diesel Trucks with LML engines
  • 2011–2016 2500HD Sierra 6.6L V8 Duramax Diesel Trucks with LML engines
  • 2011–2016 3500HD Sierra 6.6L V8 Duramax Diesel Trucks with LML engines
  • 2010–2011 Chevrolet Express van with Duramax LGH engines
  • 2010–2011 GMC Savana van with Duramax LGH engines
  • 2010–2011 GMC Sierra trucks with RPO ZW9 (chassis cabs or trucks with pickup box delete) with Duramax LGH engines
  • 2011–2012 2500HD 3500 Silverado 6.6L V8 Duramax Diesel Trucks with LGH engines
  • 2011–2012 2500HD 3500 Sierra 6.6L V8 Duramax Diesel Trucks with LGH engines


According to the firm's investigation, a defect in Ford and GM diesel CP4 fuel injection pumps essentially leaves vehicle owners driving “ticking time bombs,” according to the class-action lawsuit, with the potential for owners to suffer sudden and unexpected shutoff of the vehicle’s engine while it is in motion.

Millions of Ford and GM trucks are installed with the defective fuel pump that can suddenly fail without warning, causing a total fuel injection system failure and consequential engine failure resulting in an outrageously expensive repair bill. Additionally, repairs are fruitless, as no repair will fix the issue as long as the vehicle with the CP4 is being filled with U.S. diesel.


The basis of this defect is the Bosch-supplied CP4 high pressure fuel injection pump.

Unbeknownst to Ford and GM owners, Bosch’s CP4 pump was never compatible with American fuel standards and not built to withstand the specifications for U.S. diesel fuel in terms of lubrication or water content.

As a result, the pump is forced to run dry and destroy itself as air bubbles allow metal to rub against metal. The pump secretly deposits metal shavings and debris throughout the fuel injection system and the engine.

Ford and GM knew before and during the time period these vehicles were manufactured.


Hagens Berman believes that consumers have the right to replacement costs of vehicle parts and deserve a real answer from Ford and GM. We think that consumers shouldn't have to suffer for Ford and GM's errors that are causing undue wear and tear to the engine and fuel pump, and at worst leading vehicle owners into a highly dangerous emergency situation.


Hagens Berman is one of the most successful auto litigation law firms in the U.S. and is presently leading nationwide cases against Ford, GM, Volkswagen, Mercedes and Fiat Chrysler for emissions-cheating, safety defects and negligence, and your claim will be handled by attorneys experienced in automotive consumer law.


There is no cost or fee whatsoever involved in joining this case. In the event Hagens Berman or any other firm obtains a settlement that provides benefits to class members, the court will decide a reasonable fee to be awarded to the class' legal team. In no case will any class member ever be asked to pay any out-of-pocket sum.

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